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ARIKA RESOURCES LIMITED Capital/Financing Update 2015

Feb 9, 2015

64420_rns_2015-02-09_c5ba09e4-febb-45fa-a6c1-872f50e63557.pdf

Capital/Financing Update

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Suite 6, 245 Churchill Avenue Subiaco WA 6008 PO Box 1273 Subiaco WA 6904 Phone: +61 8 9217 3300 | Fax: +61 8 9388 3006

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ASX Code: PLD

10 February 2015

Higher Grade Resource of 20 Mt at 10% ZnEq at Admiral Bay

  • Higher‐grade zone of 20 Mt at 10% ZnEq, at 7.7% ZnEq cut‐off, within Admiral Bay (3.2% Zn, 5.8% Pb and 25 g/t Ag).

  • Higher‐grade zone within existing Inferred Resource of 72 Mt at 6.7% ZnEq

  • Geological review supports potential for higher grade zones

  • Three Zn‐rich intersections >10% ZnEq all lie within this zone

  • Multiple Zn‐rich zones >10% ZnEq defined as targets for future work

  • The MRE is currently limited to 2.1 km of a drill tested 18 km mineralised corridor

PLD Corporation Limited ( ASX:PLD ) (“ PLD ” or “ the Company ”) is pleased to announce a higher‐ grade zone of 20Mt at 10% ZnEq within the existing Inferred Mineral Resource Estimate (MRE), at the Admiral Bay Zinc Project, Canning Bain, WA ( Figure 5 and Figure 4).

The global Inferred MRE at Admiral Bay is currently 72 Mt at 6.7% ZnEq (3.1% Zn, 2.9% Pb and 18g/t Ag), which has been estimated within a 2.1 km of a drill tested 18 km mineralised corridor, (as announced by PLD on 25/11/14).

Admiral Bay is a strongly structurally‐focused MVT deposit. The style and setting of mineralisation at Admiral Bay shows similarity to other carbonate‐deposits, including Irish‐type deposits and a sub‐ set of MVT deposits that are characterised by higher grades and better focus than ‘typical’ MVT systems like East Tennessee and Silesia.

There is potential for higher‐grade zones within the overall mineralised envelopes at Admiral Bay, and geological support for the application of a higher‐grade cut‐off to the resource block model. However, because of the limited and widely spaced drill holes inherent smoothing the grades in the block model, this approach is still likely to understate the grade and overstate the tonnage.

The higher grade zone was compiled by running a resource report against the 2008 block model ( Error! Reference source not found. , Error! Reference source not found. ) and assessment of the continuity of resource blocks at different cut‐offs. At approximately 7.7% ZnEq cut‐off, the reported resource is 20Mt at 10.1% ZnEq (3.2% Zn, 5.8% Pb and 25 g/t Ag), which occurs as an interpreted coherent zone.

Significant high‐grade intersections above 10% ZnEq occur in most of the holes that have tested the central axis of the deposit as recently reported by PLD (ASX 3/2/15). In the Inferred Resource zone, seven holes have drilled mineralised zone of >10m in the axial zone and of these three have intersected zones >10% ZnEq and four have intersected mineralisation from 8–10% ZnEq.

The existence of intersections such as 20 m at 14.5% ZnEq (including 6 m at 24.3% ZnEq) in ABRD001, and 19 m at 8.3% ZnEq and 14 m at 17.7%ZnEq in SS02 indicates that high‐grade zones are present in the axial zone of the deposit and it is considered likely that multiple high‐grade zones occur that have not yet been intersected by drilling.

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Table 1. 2008 Mineral Resource Block Model results at different ZnEq cut‐off grades

ZnEq%
Cut‐off
Volume
m3
Tonnes
t
ZnEq
%
Zn
%
Pb
%
Ag
ppm
Ba
%
Density
t/m3
11.0 1,400,000 4,900,000 12.5 2.0 9.1 26.1 14.9 3.40
10.0 2,600,000 8,900,000 11.7 1.7 8.6 27.7 13.3 3.42
9.0 3,900,000 12,900,000 11.0 2.6 7.1 26.6 12.8 3.32
8.0 5,700,000 18,500,000 10.2 3.2 5.9 26.2 12.6 3.25
7.0 8,200,000 26,200,000 9.4 3.2 5.1 24.8 13.0 3.21
6.0 11,600,000 36,700,000 8.6 3.2 4.4 22.9 13.4 3.16
5.0 17,200,000 52,700,000 7.7 3.4 3.5 20.5 12.1 3.06
4.0 23,700,000 72,200,000 6.8 3.1 3.0 18.3 12.0 3.05
3.0 29,100,000 88,300,000 6.2 2.7 2.8 17.0 12.1 3.04
2.0 41,200,000 124,800,000 5.1 2.2 2.4 14.3 14.1 3.03
1.0 46,000,000 137,200,000 4.8 2.1 2.2 13.4 13.0 2.98

 NB: ZnEq numbers in this table are derived from PLD’s 2015 ZnEq formula ZnEq=Zn+1.06Pb+0.03Ag

Figure 1. Admiral Bay Grade Tonnage Curves, based on Kagara 2008 ZnEq cut‐offs

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Figure 2. Admiral Bay Block Model global Inferred Resources: 72Mt at 2% ZnEq cut‐off

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Figure 3.Admiral Bay Block Model Higher Grade Inferred Resource 20Mt at 7.7% ZnEq cut‐off

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Figure 4. Admiral Bay Zinc Project Inferred Mineral Resource Area

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The resource estimation method is likely to have smoothed the available data and reduced the grade. More drilling will be required to represent the variability in the deposit and better define zones of high and low grade in the block model.

An additional implication of the interpreted style and controls on the deposit is that, with improved understanding of the system, it should be possible to target mineralisation more effectively than with ‘typical’ irregular MVT deposits. The combination of understanding of alteration haloes and vectors, lithostratigraphic modelling, and structural modelling should support a robust targeting model that will enhance the effectiveness of drilling and definition of high‐grade zones.

Mineral Resource Estimates

Admiral Bay currently has an Inferred Resource of 72 Mt, which is based upon drilling along only a small portion (2.1 km of the 18 km) of strike extent. The current Inferred Resource (Table 2) was initially estimated by Coffey Mining in 2008.

A summary of the information used in the resource estimation is provided below.

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Table 2. Admiral Bay 2008 Mineral Resource Estimate

Table 2.
Admiral Bay 2008 Mineral Resource Estimate
Table 2.
Admiral Bay 2008 Mineral Resource Estimate
Table 2.
Admiral Bay 2008 Mineral Resource Estimate
Table 2.
Admiral Bay 2008 Mineral Resource Estimate
Table 2.
Admiral Bay 2008 Mineral Resource Estimate
Table 2.
Admiral Bay 2008 Mineral Resource Estimate
Table 2.
Admiral Bay 2008 Mineral Resource Estimate
INFERRED RESOURCE
Zone Million
Tonnes
Zn
(%)
Pb
(%)
Ba
(%)
Ag
(g/t)
ZnEq*
(%)
ZONE 1(CFM/NFM contact zone‐‐high Zn/low Pb) 21.9 3.8 0.9 7 14 5.2
ZONE 2(NFM hosted zone‐‐high Zn/high Pb) 35.1 4 2.1 13 20 6.8
ZONE 3(NFM hosted zone‐‐low Zn/high Pb) 24.6 0.1 2.7 28 8 3.2
ZONE 6(NFM/GFM contact zone‐‐low Zn/high Pb) 15.1 0.1 7.5 15 21 8.7
Higher Grade Zone(within above zones) 20 3.2 5.8 25 10
TOTAL 96.7 2.4 2.9 16 15 5.9

Notes:

  • Zones 1, 2 and 6 equate to 72 Mt at 3.1% Zn, 2.9% Pb, 18 g/t Ag and 11% Ba (6.7% ZnEq)

  • Inverse Distance (Power=2) Whole Block Estimates using 25mE by 25mN by 5mRL Parent Block Dimensions

  • Reported using a Zinc Equivalent lower cut‐off grade of 2% where ZNEQ=ZN+(0.79PB)+(0.02AG)

  • Unconstrained and using ROUNDED figures.

  • Zinc‐Lead‐Barium‐Silver Grade‐Tonnage Distributions subdivided by JORC Resource Categories.

  • CFM = Cudalgarra Formation, NFM=Nita Formation, GFM=Goldwyer Formation (NB Kagara referred to the Bongabinni Formation as Cudalgarra Formation in their work)

  • ZnEq is PLD 2015 formula Zn+1.06Pb+0.03Ag, see below.

Drilling techniques

The deposit was sampled using diamond core drilling (DD) over several drilling campaigns undertaken by CRA Exploration Pty Ltd and by Kagara Ltd. A total of 21 surface diamond drillholes were used for the resource estimation, of which 11 drilled by Kagara. All drillholes were vertical. Mud rotary pro‐collars were used to drill the cover sequence and manage zones of artesian water and gas kicks. This means each drill hole nominally represents 3.5Mt of resource.

All drill holes were vertical. Mud rotary pre‐collars were used to drill the cover sequence and manage zones of artesian water and gas kicks.

All drilling by Kagara through the mineralised zones utilised predominantly HQ diamond core, with exception being NQ core used in hole ABRD001. Logged core recovery is only available for the Kagara drillholes. The data indicates excellent average recoveries of 99% of cored portions of the drillholes. CRAE holes were predominantly NQ is size.

Drilling has targeted the 285° striking mineralisation at approximately 200 m to 400 m intervals over approximately 2.6 km of strike length in the model area. Definition of mineralisation across strike is limited with only four of the oblique sections having two or more drillholes (Coffey 2008).

Sampling and Sub‐sampling techniques

The entire length of the drill core was sampled. For CRAE drill holes ½ core was sampled. For Kagara drillholes the entire length of the drillcore was sampled; the HQ core was sampled as ¼ core, and the NQ (ABRD001 – partial) as ½ core.

The core was routinely sampled on 1m intervals, with a minimum interval of 0.25m. Sample sizes are considered to be appropriate to accurately represent the mineralisation at Admiral Bay based on the thickness and consistency of the intersections, the sampling methodology and the percent value assay ranges for the primary elements.

The mud rotary precollars were collected as 10m composite samples by the contract mud loggers. These samples were not analysed.

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Geological Interpretation

The mineralised zones coincide with bioherm development along the ABFZ. Mineralisation appears to be relatively continuous along the strike of the fault and bioherm, but is lower grade and less well developed on its flanks. However, the flank areas are poorly defined or tested by drilling.

Drill‐hole intercept logging and assay results have formed the basis for the geological interpretation. While mineralisation trend continuity appears to be predictable, grade continuity within the mineralised zones remains relatively uncertain for some of the defined zones and is not adequately defined / constrained by the current drill‐hole spacing. The precise limits and geometry cannot be absolutely defined due to the limitations of the current drill coverage. Further work is required to better define the geometry and limits of the mineralised zones.

The grade and lithological interpretation forms the basis for the modelling. Coffey developed a geological and mineralisation framework suitable for grade estimation based on a review of the available geological and geochemical data.

Sample Analysis Methods

CRAE samples were processed by Analabs and a four acid digest with AAS finish for Cu, Fe, Pb, Zn, Ag, Ca, Mg; pressed powder XRF for Ba, Sr; and Fusion/Specific ion electrode) for F. Kagara samples were processed by SGS Mineral Services and also used a four acid digestion with AAS finish for Cu, Fe, Pb, Zn; four acid digest with ICPOES finish for Ag, Ca, Mg, As, Bi, Co Cd, Sb; Leco analyser for S; and fusion with OES finish for Ba and Sr.

A wireline suite comprising gamma, calliper, density, neutron, resistivity, SP, temperature, sonic and magnetic deviation was collected from all drill holes.

The assaying data is slightly incomplete. For the 5,807 samples in the resource area, only 5,704 have data for Zn, Pb, Cu. Sulphur data was limited only the Kagara drillholes and there were only 2,674 analyses. Barium data was present for 3,723 samples with some selectivity on portions of drillholes. Fluorine data was only collected by CRAE, with only 2,779 analyses.

Estimation Methodology

Five individual mineralised zones were interpreted based on the drillhole sample data using approximate 1.5–2% zinc and/or lead cut‐offs to define coherent zones of sulphide mineralisation. The currently interpreted mineralised zones extend for approximately 2.1 km along 285° northwest strike. The width of the zones varies from 150 m to 670 m with maximum 50 m thickness for individual mineralised envelopes. The mineralised zones extend from the depth of 1,160 m to the depth of 1,500 m below the surface.

All zinc, lead, copper, silver, Total Sulphur and barium variables estimated in the Admiral Bay resource model mineralised zones were generated using Inverse Distance (ID) using a power of two. The ID estimates have been completed using Datamine software. Block discretisation of 5 by 5 by 2 points (for X by Y by Z respectively) was used for block estimation. Composite length and bulk density weighting was used in the estimation process

The block model was constructed using a 25mE by 25mN by 5mRL parent block size, with subcelling to 6.25mE by 6.25mN by 1.25mRL for domain volume resolution. The parent cell size was chosen based on the general morphology of mineralised bodies and in order to avoid the generation of too large block models. The subcelling size was chosen to maintain the resolution of the mineralised bodies.

For all variables estimated (Zn, Pu, Cu, Ag, Sr, and Ba), a two‐pass estimation strategy has been applied, with progressively expanded sample searches applied to successive estimation passes only considering blocks not previously assigned. First pass searches used an anisotropic range of 600 m

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by 300 m by 300 m with major axis oriented horizontally along strike. If a block was not estimated in the first pass, a second pass search utilised a maximum range of 1200 m by 600 m by 600 m.

The use of similar search radii for the semi‐major and minor axis orientations considered the narrow structures being modelled, the variable orientations and curvature of the structures, and erratic distribution of data within the mineralised zones.

The maximum number of composites used for any estimate was restricted to 20 composites for all estimated variables. The minimum number of composites used for any first pass estimate was 10 composites for all estimated variables. The minimum number of composites used for any second pass estimate was two composites for all estimated variables. No octant or other search constraint was applied

All mineralised zone divisions were treated as hard boundaries for data and parameters used in the estimation process.

The block model size was selected largely as a compromise for adequate volume definition of the narrow mineralised zones in an underground mining scenario.

Classification Criteria

The Inferred Mineral Resource classification is based on the evidence from the available drill sampling and seismic interpretation. This evidence is sufficient to imply but not verify geological and grade continuity.

Cut‐off Grades

Five individual mineralised zones were interpreted based on the drillhole sample data using approximate 1.5–2% zinc and/or lead cut‐offs to define coherent zones of sulphide mineralisation. The resource was reported using a Zinc Equivalent lower cut‐off grade of 7.7%.

Mining Factors and Assumptions

In June 2010, the Admiral Bay Prefeasibility Study (PFS) was completed by RSV Australia Pty Ltd. The PFS is, by its nature, conservative and encompasses only a small proportion of the mineralised trend at Admiral Bay. It is based on a small portion, 35%, of the Inferred Mineral Resource tonnes, and is modelled over a strike length of 2.1 km.

Metal Equivalence

Zinc equivalent (ZnEq) calculation parameters are presented in Table 3. The metallurgical recoveries are derived from metallurgical testwork completed by CRAE and Kagara. It is PLD’s opinion that all elements included in the metal equivalent calculation have a reasonable potential to be recovered and sold. The calculation formula is ZnEq=Zn+1.06Pb+0.03Ag

Table 3 Zinc Equivalence Parameters

Metal Metal
Price
US$
Price in Assay
units
US$
Concentrate
Recovery
%
Recovered Unit
Pricing
US$
ZnEq
Factor1
Zinc 1.00/lb 22.04per % 90 19.84 1.0
Lead 1.00/lb 22.04per % 95 20.94 1.06
Silver 19/oz 0.61perppm 95 0.58 0.03

1
Approximating to head grade

Metal equivalents are highly dependent on the metal prices used to derive the equivalence formula. PLD notes that the metal equivalence method taken above is a simplified approach. Only preliminary metallurgical recoveries are available. The metal prices are assumed indicative LME

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prices and do not reflect the metal prices that a smelter would pay for concentrate nor are any smelter penalties or charges included in the calculation.

FOR MORE INFORMATION:

Matt Gauci Managing Director T: +61 417 417 907

David Tasker Professional Public Relations T: +61 8 9388 0944

Competent Person Statement

The Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (the ‘JORC Code’) sets out minimum standards, recommendations and guidelines for Public Reporting in Australasia of Exploration Results, Mineral Resources and Ore Reserves. The Information contained in this announcement has been presented in accordance with the JORC Code and references to “Measured, Indicated and Inferred Resources” are to those terms as defined in the JORC Code.

The information in this report that relates to the Admiral Bay Mineral Resources is based on information compiled by Serikjan Urbisinov, a Competent Person who is a Member of the Australian Institute of Geoscientists. Mr Urbisinov is a full time employee of independent, resource industry consultancy CSA Global Pty Ltd. Mr Urbisinov has sufficient experience that is relevant to the style of mineralisation and type of deposit under consideration and to the activity being undertaken to qualify as a Competent Person as defined in the 2012 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’.

Mr Urbisinov consents to the inclusion in the report of the matters based on his information in the form and context in which it appears.

All parties have consented to the inclusion of their work for the purposes of this announcement. The interpretations and conclusions reached in this report are based on current geological theory and the best evidence available to the authors at the time of writing. It is the nature of all scientific conclusions that they are founded on an assessment of probabilities and, however high these probabilities might be, they make no claim for absolute certainty. Any economic decisions which might be taken on the basis of interpretations or conclusions contained in this report will therefore carry an element of risk.

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About Admiral Bay

The Admiral Bay deposit was discovered in 1981 by Meridian Oil NL during petroleum exploration, and was subsequently acquired by CRA Exploration (the exploration arm of CRA Limited, now Rio Tinto Ltd), who undertook substantial exploration from 1986 to 1992. Kagara Ltd acquired the deposit from CRA Exploration in 2004 and completed an exploration programme that lead to an Inferred Resource in 2008, as well as a pre‐feasibility study to test the viability of the project in 2010.

Location

The Admiral Bay Project is located in the coastal region of the Great Sandy Desert, on the southern edge of the Kimberley region some 140 km south of Broome, Western Australia ( Figure 3 ). The project area is well located, being only 70 km east of the all‐weather Great Northern Highway, which connects Port Hedland to Broome. Power is present nearby with the Broome Natural Gas Pipeline servicing the West Kimberley Power Project. The Ports of Broome and Derby provide port options servicing Western Australia's Kimberley region and currently support various exports.

Figure 5. Admiral Bay Zinc Project Location, Tenements and Mineralised Corridor

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Tenure

The Admiral Bay deposit is located within two granted Mining Licences (ML04/244 and ML04/249), which are valid until 20/3/2033 and one granted Exploration License (EL04/1610), which is valid until 3/9/2017. The minimum annual expenditure commitment is $248,100 and annual rents are $46,910. The tenements are currently in good standing with the WA Department of Mines and Petroleum.

Geology, Mineralisation, Resources and Potential

Within the project area, the surface geology is dominated by Quaternary aeolian sand. Sand sheets in the northwest grade into 2–10 m high dunes towards the southeast. The stratigraphy is

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comprised of a thick sequence of Cretaceous‐Jurassic‐Permian sandstones/siltstones (up to 1,200 m thick), which overlies a variably dolomitised siltstone/shale/limestone – the Nita Formation – which is host to an upper zinc‐rich zone and a lower lead‐rich zone of mineralisation.

McCracken et al (1996) report that the deposit is located in the Great Sandy Accommodation Zone (GSAZ) of the Admiral Bay Fault Zone (ABFZ), a major fault zone that separates the Broome Platform from the Willara Sub‐basin of the Canning Basin.

The Admiral Bay deposit consists of four main mineralised zones:

  • (1) an extensively altered and fractured algal bioherm association;

  • (2) a lower, lead‐rich zone in the upper Goldwyer Formation and lower Leo Member of the Nita Formation;

  • (3) a hydrothermal dolomite zone that extensively replaces the Leo Member; and,

  • (4) an upper, zinc‐rich zone in the Cudalgarra Member of the Nita Formation and lower Bongabinni Formation.

Admiral Bay is a zinc‐lead‐silver‐barium deposit, with mineralisation hosted mainly in the Nita Formation and, to a lesser degree, in the Carribuddy and Goldwyer Formations, over a mineralised strike extent of 2.1km. It is a very strongly structurally‐focused MVT deposit, dominated by replacement and small‐scale cavity‐fill, as well as by veining in the lower lead zones

In general, base metal mineralisation occurs in the lower parts of the Siluro‐Devonian Caribuddy Formation and the Ordovician‐age Nita and Goldwyer Formations about 1,250m below surface. Mineralisation is most typically hosted within calcareous rocks, and commonly associated with appreciable barite as a gangue mineral.

Review of seismic data shows that the post‐Nita Formation sequence of rocks is recognised as a well stratified sediment succession on seismic sections and allows a good interpretation of post‐Nita geological events. The host sequence is defined as the seismic interval immediately below. Its poor seismic character is due to alteration, faulting in the area below the mineralisation, probable significant facies variation across strike, and the relatively restricted thickness of the zone. Rift‐style faulting and sedimentation can be inferred below the Willara Formation.

The facies variation is associated with reef growth over the leading edge of a sub‐basin hanging wall block. It appears that the crest of the hangingwall block of the Admiral Bay Fault was covered by reefs. Longitudinal facies continuity (in long section) of this reefal zone can be seen.

There is a strong correlation of drilled mineralisation with the reefal environment and basement fault location. Further re‐processing and interpretation of the seismic data is expected to provide valuable information to support resource estimation and exploration targeting.

Mineralisation is interpreted to have formed during early burial when mineralising basinal fluids were focused into structural and lithostratigraphic traps along the ABFZ. The zinc zone mineralisation developed through pervasive replacement of favourable reactive horizons beneath aquicludes in Nita Formation bioherms (or fossil reefs). The lead zone formed in the feeder system below the zinc zone in the bioherm, where ground preparation by fault‐related fracturing and dolomitisation channelled fluids into the overlying Nita Formation. The coincidence of the fluid‐ focusing accommodation zone along ABFZ with shallow‐water favourable host facies was critical in the development of a large focused deposit at Admiral Bay.

Zinc‐lead‐silver sulphides infill dissolution, breccia and fracture porosity and overprint stylolites. Previous drilling indicates that the upper high‐grade Zn‐rich zone is up to 20m thick, whilst the lower high‐grade Pb zone is up to 15m thick. The high‐grade zones described above are hosted within a broad envelope, of moderate‐grade Zn‐Pb mineralisation up to 110–120m thick.

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Historical Drilling Results

The main zone of mineralisation at Admiral Bay was sampled using diamond core drilling over several drilling campaigns undertaken by CRA Exploration Pty Ltd and by Kagara Ltd. A total of 21 surface diamond drillholes were used for the resource estimation, of which 11 drilled by Kagara. All drillholes were vertical.

Higher grade (Zn or Pb > 5%) and/or substantial intersections (from 20–75m) flag potential for high grade zones with in the mineralisation envelopes.

The current Inferred Mineral Resource is hosted within 2.1km segment of an 18km strike length of the Admiral Bay Fault Zone within the tenement area. Regional scout holes testing the same structural/mineralisation corridor along strike have intersected a number of zones of significant mineralisation. Unusually for MVT style mineralisation there has been a high success rate of intersecting mineralisation in past drilling, which suggests the potential for locating additional mineralisation is positive.

While MVT style mineralisation is unlikely to be continuous along the entire 18km extent of the Admiral Bay Fault Zone with the project tenements, the known mineralised intersections in regional scout holes provides support for the potential of additional deposits of potentially similar size to the known resources at Admiral Bay.

Comprehensive details of the drilling programme are provided in Appendix 2, JORC Table 1.

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Appendix 1 JORC Code Table 1 for MRE

Criteria Section 1 JORC Code explanation Commentary
Section 1 Sampling Techniques
and Data
Sampling techniques Nature and quality of sampling (e.g. cut
channels, random chips, or specific
specialised
industry
standard
measurement tools appropriate to the
minerals under investigation, such as
down hole gamma sondes, or handheld
XRF instruments, etc.). These examples
should not be taken as limiting the
broad meaningof sampling.
The deposit was sampled using diamond core drilling (DD) over several drilling campaigns undertaken by CRA
Exploration Pty Ltd and by Kagara Ltd. A total of 21 surface diamond drillholes were used for the resource estimation,
of which 11 drilled by Kagara. All drillholes were vertical.
Include reference to measures taken to
ensure sample representivity and the
appropriate
calibration
of
any
measurement tools or systems used.

CRAE drillhole collar locations were recorded from the CRAE exploration reports and checked by Survey
North. Although only one collar could be located, the rehabilitated drillhole pads were easily located. This
survey confirmed the approximate locations of the drillholes (±10m) and also the surface RL values (±1m).

The Kagara drillholes were sited using a handheld GPS (approximate error ± 5m). At the time of writing
drillholes ABRD001, ABRD002, ABRD003, ABRD005, and ABRD010 had been accurately surveyed by licensed
surveyors, Survey North using DGPS. The RLs for the unsurveyed holes have been estimated based on the
surveyed holes and ground control provided by Survey North. It is estimated that these RLs are within 1.5m
of the true RL.

The CRAE drillholes were surveyed every 50‐100m using a single shot survey tool which recorded the
deviation from vertical only with no assigned azimuth. Because of the lack of azimuth data, the CRAE
drillholes were assumed to be vertical, with average dip being 88 degrees.

Kagara drillholes were surveyed downhole in three phases.
o
As part of a larger geophysical logging exercise, downhole surveys were completed by Weatherford
using a magnetic deviation tool.
o
The second phase of surveys was completed by Scientific Drilling International using a Keeper Gyro
System. As part of this survey, the diamond tail of hole ABRD009 was surveyed using both the
magnetic deviation tool and the gyro. A comparison of both surveys reveals only minimal variation
in the northing coordinate and confirms the validity of the magnetic deviation surveys.
o
The third phase of surveys was completed by Downhole Surveys of Kalgoorlie using a SPT north–
seeking gyro tool

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Criteria Section 1 JORC Code explanation Commentary
Aspects
of
the
determination
of
mineralisation that are Material to the
Public Report. In cases where ‘industry
standard’ work has been done this
would
be
relatively
simple
(e.g.
‘reverse circulation drilling was used to
obtain 1 m samples from which 3 kg
was pulverised to produce a 30 g
charge for fire assay’). In other cases
more explanation may be required,
such as where there is coarse gold that
has
inherent
sampling
problems.
Unusual commodities or mineralisation
types (e.g. submarine nodules) may
warrant
disclosure
of
detailed
information.
 Sample collection procedures for CRAE core are not documented
 For Kagara drillholes
o The mud rotary precollars were collected as 10m composite samples by the contract mud loggers.
These samples were not analysed
o The diamond core was processed systematically conforming to the following routine:
 Core orientation based on a nominal “cut line”.
 Metre marks and recoveries.
 RQD, geotechnical and magnetic susceptibility.
 Photographs (dry and wet).
 Geological and structural logging.
 Specific gravity measurements (20m above the mineralised interval and 10m below).
 Sampling.
o The entire length of the drill core was sampled.
o The HQ core was sampled as quarter core, and the NQ (ABRD001 – partial) as half core
o The core was routinely sampled on 1m intervals, with a minimum interval of 0.25m
 Sample preparation procedures for CRAE samples are not documented
 For Kagara drillholes:
o The samples preparation process used was PRP88 whereby up to 3.5kg of sample is dried, crushed,
then pulverised to 90% passing 75µm
 CRAE samples were processed by Analabs and utilised the processes – 103‐AAS (perchloric, nitric,
hydrochloric and hydrofluoric acid digest with AAS finish); 104‐AAS (perchloric, nitric, hydrochloric and
hydrofluoric acid digest with AAS finish); XRF (pressed powder XRF; Fusion (Fusion/Specific ion electrode)
 Kagara samples were processed by SGS Mineral Services and utilised the processes – AAS43B (4 acid
digestion with AAS finish);ICP40Q (4 acid digest with ICPOES finish);CSA06V(Leco analyser).
Drilling techniques Drill type (e.g. core, reverse circulation,
open‐hole hammer, rotary air blast,
auger, Bangka, sonic, etc.) and details
(e.g. core diameter, triple or standard
tube, depth of diamond tails, face‐
sampling bit or other type, whether
core is oriented and if so, by what
method, etc.).
 The deposit was sampled using Diamond Drilling (DD) over several drilling campaigns. The latest drilling
campaign was completed by Kagara Ltd. A total of 21 surface diamond drillholes were used for the
resource estimation, of which 11 drilled by Kagara.
 Kagara 2007‐08 drilling programme comprised 10 mud rotary/core holes and one incomplete pre‐collar hole
drilled to depths of up to 1,515m for a total of 13,137.1 rotary and 3,608m of diamond drilling. Holes were
drilled on nominally 400m spaced sections, 150m apart. The drilling comprised two elements:
o
Precollars drilled with a rotary mud rig to depths of between 1,200‐1300m – by Australian Drilling
Services (ADS) utilising a Kremco K‐600‐T rig; and
o
HQ core tails drilled with a diamond core drilling rig to extend each hole to a total depth of
approximately 1,500m – by Boart Longyear (BL) utilising a UDR 1500 rig.
Drill Sample Recovery Method of recording and assessing
core and chip sample recoveries and
results assessed.

All drilling by Kagara through the mineralised zones utilised predominantly HQ diamond core, with exception
being NQ core used in hole ABRD001. Logged core recovery is only available for the Kagara drillholes. The
data indicates excellent average recoveries of 99% of cored portions of the drillholes.

Page 15 of 28

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Criteria Section 1 JORC Code explanation Commentary
Measures taken to maximise sample
recovery and ensure representative
nature of the samples.

Diamond core was reconstructed into continuous runs for orientation marking, depths being checked against
the depth marked on the core blocks. Additionally the diamond core was processed systematically
conforming to the following routine.
o
Metre marks and recoveries.
o
RQD, geotechnical and magnetic susceptibility.
o
Photographs (dry and wet).
o
Geological and structural logging.
o
Specific gravity measurements (20m above the mineralised interval and 10m below).
o
Sampling
Whether a relationship exists between
sample
recovery
and
grade
and
whether
sample
bias
may
have
occurred due to preferential loss/gain
of fine/coarse material.

Sample Recovery is generally very high (99%) within the mineralised zones. No significant bias is expected,
and any potential bias is not considered material at this stage of resource development.
Logging Whether core and chip samples have
been geologically and geotechnically
logged to a level of detail to support
appropriate
Mineral
Resource
estimation,
mining
studies
and
metallurgical studies

Diamond core was geotechnically logged for recovery and RQD for Kagara drillholes. Information on structure
type and orientation are recorded in the database. Kagara core is stored in Broome for future reference;
CRAE holes are stored in the DMP core library.

The level of geological logging is not fully documented; however, the drillhole database contains adequate
geological detail to construct a basic resource model. Full wireline log suites are available for all drill holes
Whether logging is qualitative or
quantitative
in
nature.
Core
(or
costean,channel,etc.) photography

Detailed qualitative logs of lithology and mineralisation are available. Additionally all core was photographed
(though some photography of earlier CRAE core was not available for this work).
The total length and percentage of the
relevant intersections logged.

All drill core was logged in full; summary chip logs of the rotary mud sections of the holes are also available.
Sub‐sampling techniques and
sample preparation
If core, whether cut or sawn and
whether quarter, half or all core taken.

For CRAE core one third core was sampled

For Kagara drillholes the entire length of the drillcore was sampled. The HQ core was sampled as quarter
core,and the NQ (ABRD001 –partial)as half core.
If non‐core, whether riffled, tube
sampled, rotary split, etc. and whether
sampled wet or dry.

10m composites of rotary mud chips were collected.
For all sample types, the nature, quality
and appropriateness of the sample
preparation technique.

Sample preparation procedures for CRAE samples are not documented.

For Kagara samples:
o
The samples preparation process used was PRP88 whereby up to 3.5kg of sample is dried, crushed,
thenpulverised to 90%passing75µm
Quality control procedures adopted for
all sub‐samplingstages to maximise

No QA/QC data for CRAE is documented; discussions with the rig geologists at the time reveal that no
standards or blanks were submitted with the lab batches though selected duplicate core was submitted.

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Criteria Section 1 JORC Code explanation Commentary
representivity of samples.
Most QA/QC data pertains to Kagara’s samples submitted to Genalysis. Genalysis QA/QC documentation
(Genalysis, 2008) covers only Ba and Sr assays. Apparent lack of review of Pb, Zn, Cu, and Ag results is a major
omission.

Blanks
o
Kagara – no blank samples submitted
o
Laboratory – Genalysis assayed 34 control blanks. Genalysis review of Ba and Sr assays of blank
material at the approximate detection limits of the assays. No details of Pb, Zn, Cu and Ag results
are given.

Standards
o
Kagara – One standard was included for every 25 samples in the sample run. Kagara used Gannet
standards.
o
Laboratory – Genalysis analysed approximately 47 standard samples comprising 3 different
reference materials. Only Ba and Sr assay are referenced, with no details on any analyses for Pb,
Zn, Cu and Ag elements.

Coarse reject duplicates
o
Kagara – not submitted
o
Laboratory – not submitted

Pulp Duplicates
o
Kagara – not submitted
o
Laboratory – not submitted

Repeat Assays (same pulp)
o
Laboratory – Genalysis documented that 30 pulp repeats were analysed – re‐assayed at a later time
than the original samples

Repeat Assays (AAS Respray)
o
Laboratory‐ Genalysis documented that 44 pulp repeats were analysed – re‐assayed at the same
time as the original samples.

Umpire and Check Assaying – No routine assaying of selected samples through an umpire laboratory was
completed either by Kagara or CRAE. 50 pulp samples from CRAE core were re‐assayed by Kagara using
Australian LaboratoryServices(ALS).
Measures taken to ensure that the
sampling is representative of the in situ
material
collected,
including
for
instance
results
for
field
duplicate/second‐half sampling.

The entire length of the drill core was sampled.

The HQ core was sampled as quarter core, and the NQ (ABRD001 – partial) as half core

The core was routinely sampled on 1m intervals, with a minimum interval of 0.25m

The mud rotary precollars were collected as 10m composite samples by the contract mud loggers. These
samples were not analysed
Whether sample sizes are appropriate
to the grain size of the material being
sampled.

Sample sizes are considered to be appropriate to accurately represent the mineralisation at Admiral Bay
based on the thickness and consistency of the intersections, the sampling methodology and the percent
value assayranges for theprimaryelements.

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Criteria Section 1 JORC Code explanation Commentary
Quality of assay data and
laboratory tests
The
nature,
quality
and
appropriateness of the assaying and
laboratory
procedures
used
and
whether the technique is considered
partial or total.

CRAE samples were processed by Analabs and utilised the processes – 103‐AAS (perchloric, nitric,
hydrochloric and hydrofluoric acid digest with AAS finish) for Cu, Fe, Pb, Zn, Ag; 104‐AAS (perchloric, nitric,
hydrochloric and hydrofluoric acid digest with AAS finish) for Ca, Mg; XRF (pressed powder XRF for Ba, Sr;
Fusion (Fusion/Specific ion electrode) for F

Kagara samples were processed by SGS Mineral Services and utilised the processes – AAS43B (4 acid
digestion with AAS finish) for Cu, Fe, Pb, Zn; ICP40Q (4 acid digest with ICPOES finish) for Ag, Ca, Mg, As, Bi,
Co Cd,Sb;CSA06V(Leco analyser)for S;DP/OES specific fusion with OES finish)for Ba and Sr.
For geophysical tools, spectrometers,
handheld XRF instruments, etc., the
parameters used in determining the
analysis including instrument make and
model, reading times, calibrations
factors applied and their derivation,
etc.

A Wireline suite comprising gamma, calliper, density, neutron, resistivity, SP, temperature, sonic and
magnetic deviation was collected from all drill holes
Nature of quality control procedures
adopted
(e.g.
standards,
blanks,
duplicates, external laboratory checks)
and whether acceptable levels of
accuracy (i.e. lack of bias) and precision
have been established.

Field QAQC procedures included the insertion of commercial standards (one standard for every 25 samples)
by Kagara; CRAE included a limited number of field duplicates of ¼ core.

No external laboratory checks were performed on samples. Assay results have been generally satisfactory
demonstrating acceptable levels of accuracy and precision.
Verification of sampling and
assaying
The
verification
of
significant
intersections by either independent or
alternative company personnel.

No physical core was inspected by CSA; however, CSA was provided by high quality photographs of the core
for CRAE holes (SS02, SS14, SS22, SS24) and all holes drilled by Kagara.
The use of twinned holes.
Only one hole has been twinned, by wedging, due the depth and cost of the holes. Repeatability between
ABRD011 and ABRD011D2 was reasonable
Documentation of primary data, data
entry procedures, data verification,
data storage (physical and electronic)
protocols.

All core was logged then data was sent for validation and storage into a relational database.
Discuss anyadjustment to assaydata
No adjustments were made
Location of data points Accuracy and quality of surveys used to
locate drill holes (collar and down‐hole
surveys), trenches, mine workings and
other
locations
used
in
Mineral
Resource estimation.

CRAE drillhole collar locations were recorded from the CRAE exploration reports and checked by Survey
North. Although only one collar could be located, the rehabilitated drillhole pads were easily located. This
survey confirmed the approximate locations of the drillholes (±10m) and also the surface RL values (±1m).

The Kagara drillholes were sited using a handheld GPS (approximate error ± 5m). At the time of writing
drillholes ABRD001, ABRD002, ABRD003, ABRD005, and ABRD010 had been accurately surveyed by licensed
surveyors,SurveyNorth usingDGPS. The RLs for the unsurveyed holes have been estimated based on the

Page 18 of 28

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Criteria Section 1 JORC Code explanation Commentary
surveyed holes and ground control provided by Survey North. It is estimated that these RLs are within 1.5m
of the true RL.

The CRAE drillholes were surveyed every 50‐100m using a single shot survey tool which recorded the
deviation from vertical only with no assigned azimuth. Because of the lack of azimuth data, the CRAE
drillholes were assumed to be vertical.

Kagara drillholes were downhole surveyed in 3 phases.
o
As part of a larger geophysical logging exercise, downhole surveys were completed by Weatherford
using a magnetic deviation tool.
o
The second phase of surveys was completed by Scientific Drilling International using a Keeper Gyro
System. As part of this survey, the diamond tail of hole ABRD009 was surveyed using both the
magnetic deviation tool and the gyro. A comparison of both surveys reveals only minimal variation
in the northing coordinate and confirms the validity of the magnetic deviation surveys.

The third phase of surveys was completed by Downhole Surveys of Kalgoorlie using a SPT north–seeking gyro
tool
Specification of the grid system used.
The grid system is GDA94 Zone 51

Earlier CRAE work used AGD84 Zone 51,but Kagara converted all data to GDA94
Quality and adequacy of topographic
control.

All collar locations have been picked up by means of DGPS. Apart from drillhole collar surveys, survey
definition of surface topography was not essential as a constraint for the top of the resource model given the
depth of the mineralisation.
Data spacing and distribution Data
spacing
for
reporting
of
Exploration Results.

Kagara drillholes were drilled on nominally 400m spaced sections, 150m apart. This tested the entire 2.7km
mineralized horizon within M4/249
Whether
the
data
spacing
and
distribution is sufficient to establish the
degree
of
geological
and
grade
continuity appropriate for the Mineral
Resource and Ore Reserve estimation
procedure(s)
and
classifications
applied.

The data spacing and distribution is very limited

Geological evidence is sufficient to imply but verify geological continuity

Lithological packages hosting the mineralisation are discernible on seismic imagery and provide evidence of
geological continuity

Grade continuity is less well established and given the nature of MVT‐style mineralisation is expected to be
complex

It is considered that available data is sufficient to demonstrate spatial and grade continuity of the mineralised
horizon to support the definition of Inferred Mineral Resources under the 2012 JORC code.
Whether sample compositing has been
applied.

The mud rotary precollars were collected as 10m composite samples by the contract mud loggers. These
samples were not analysed
Orientation of data in relation
to geological structure
Whether the orientation of sampling
achieves unbiased sampling of possible
structures and the extent to which this
is known,consideringthe deposit type.

Kagara drillholes were drilled on nominally 400m spaced sections, 150m apart, perpendicular to strike. This
tested the entire 2.7km mineralized horizon within M4/249
If the relationship between the drilling
orientation and the orientation of key

Diamond drilling confirmed that drilling orientation did not introduce any bias regarding the orientation of

Page 19 of 28

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Criteria Section 1 JORC Code explanation Commentary
mineralised structures is considered to
have introduced a sampling bias, this
should be assessed and reported if
material.
the mineralised zones.
Sample Security The measures taken to ensure sample
security.

No information available; it is assumed that both CRAE and Kagara organised delivery of samples directly to
the laboratoryin Perth.
Audits or reviews The results of any audits or reviews of
sampling techniques and data.

In general, drillhole data was compiled to industry standard. Lack of documentation, QA/QC data, and
complete downhole surveys for non‐Kagara drillholes suggests to remove these holes from the future
resource estimations where the higher resource classification categories Indicated and Measured applied.

No detailed validation of the assaydata against laboratorycertificates was completed.
Criteria Section 2 JORC Code explanation Commentary
Section 2 Reporting of Exploration Results
Mineral tenement and land tenure
status
Type,
reference
name/number,
location and ownership including
agreements or material issues with
third parties such as joint ventures,
partnerships,
overriding
royalties,
native title interests, historical sites,
wilderness or national park and
environmental settings.

The Admiral Bay Project is located in the central Canning Basin, on the southern edge of the Kimberley
region some 140km south of Broome, Western Australia.

The Admiral Bay deposit is located within two granted Mining Leases (ML04/244 and ML04/249), which
are valid until 20/3/2033 and one granted Exploration Licence (EL04/1610), which is valid until 3/9/2017.

The Company has signed an agreement with Kagara Ltd (in Liquidation) to acquire the Admiral Bay
Project, via a combination of cash and shares, including $30,000 cash for an exclusive three month Due
Diligence Period, $1,000,000 in cash and convertible notes and a 1.5% NSR to acquire 100%, with a
further $6,000,000 in various milestone payments.

The tenement is located wholly within Vacant Crown Land and is covered by the Native Title Determined
Area of the Karajarri People(Area A)
The security of the tenure held at the
time of reporting along with any
known impediments to obtaining a
licence to operate in the area.

The minimum annual expenditure commitment is $248,100 and annual rents are $46,910.

The tenements are in good standing with the WA Department of Mines and Petroleum (DMP).
Exploration done by other parties Acknowledgment and appraisal of
exploration by other parties.

The Admiral Bay deposit was discovered in 1981 by Meridian Oil NL during petroleum exploration, and
was subsequently acquired by CRA Exploration (the exploration arm of CRA Limited, now Rio Tinto Ltd),
who undertook substantial exploration from 1986 to 1992. Kagara Ltd acquired the deposit from CRA
Exploration in 2004 and completed an exploration programme that lead to an initial Inferred Resource,
as well as a pre‐feasibility study to test the viability of the project. Kagara Ltd entered into Administration
in 2012 and subsequently Liquidation in 2013.

Past work has been of a high standard and suitable for resource estimation.

Page 20 of 28

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Criteria Section 2 JORC Code explanation Commentary
Geology Deposit type, geological setting and
style of mineralisation.

Admiral Bay lies within the Admiral Bay Fault Zone, which separates the Broome Platform and Willara
Sub‐basin of the Canning Basin.

Admiral Bay is carbonate‐hosted zinc‐lead‐silver‐barium deposit, with mineralisation hosted mainly in the
Nita Formation and, to a lesser degree, in the Carribuddy and Goldwyer Formations, over a mineralised
strike extent of at least 18km; nominally the deposit is classified as a Mississippi Valley Type deposit
(MVT).

Admiral Bay does not appear to be a typical mid‐continental MVT. Rather it appears to be a large and
strongly focused MVT more like Reocin or Polaris, rather than the more ‘poddy’ Goongewa or mid‐
continental US or Polish‐style MVTs. The ratio of mineralised hits in the drilling is actually very high for
this style of mineralisation.

Within the project area, the surface geology is dominated by Quaternary Aeolian sand. Sand sheets in
the northwest grade into 2–10m high dunes towards the southeast.

The stratigraphy is comprised of a thick sequence of Cretaceous‐Jurassic‐Permian sandstones/siltstones
(up to 1,200m thick), which overlies a variably dolomitised siltstone/shale/limestone – the Nita
Formation – which is host to an upper zinc‐rich zone and a lower lead‐rich zone of mineralization.

Sulphides infill dissolution, breccia and fracture porosity and overprint stylolites

Previous drilling indicates that the upper high‐grade Zn‐rich zone is up to 20m thick, whilst the lower
high‐grade Pb zone is up to 15m thick. The high‐grade zones described above are hosted within a broad,
moderately Zn‐Pb mineralised, zone up to 110‐120m thick.

In general, base metal mineralisation occurs in the lower parts of the Siluro‐Devonian Caribuddy
Formation and the Ordovician‐age Nita and Goldwyer Formations over depths of around 1,250m to
1,700m. Mineralisation is most typically associated with calcareous rocks, commonly with appreciable
barite.
Drillhole information A
summary
of
all
information
material to the understanding of the
exploration
results
including
a
tabulation
of
the
following
information for all Material drill
holes:
See Tables 1 and 2, presented in Appendix 1
Data aggregation methods In reporting Exploration Results,
weighting
averaging
techniques,
maximum and/or minimum grade
truncations (e.g. cutting of high
grades) and cut‐off grades are usually
Material and should be stated.

Results were weighted by sample intervals

No top or bottom cuts were applied

For treatment of data used in the resource estimation see Section 3 below
Where
aggregate
intercepts
incorporate short lengths of high

Intersections are length weighted average grades for zones wider than or equal to 2m and greater than 2% Zn
or Pb,includingupto 2m of internal waste

Page 21 of 28

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Criteria Section 2 JORC Code explanation Commentary
grade results and longer lengths of
low grade results, the procedure
used for such aggregation should be
stated and some typical examples of
such aggregations should be shown
in detail.
The
assumptions
used
for
any
reporting of metal equivalent values
should be clearly stated.
Zinc Equivalent calculated as ZnEq=0.9Zn+0.85Pb+0.01*Ag

Based on October 2014 monthly metal prices as listed in www.indexmundi.com of US$2276.83/tonne for zinc
and US$2034.26/tonne for Pb

Metallurgical testwork has predicted recoveries in excess of 95% for Pb, 90% for Zn and from 46–54% for Ag;
consequently a Ag recovery of 50% was selected (however it should be noted that the highly variable grades
Ag and unknown smelter thresholds mean the significance of silver is minor).

After review of the historical metallurgical testwork it is the Company’s opinion that there is a reasonable
potential for both zinc,lead and silver to be recovered and sold.
Relationship between mineralisation
widths and intercept lengths
These relationships are particularly
important
in
the
reporting
of
Exploration Results. If the geometry
of the mineralisation with respect to
the drill hole angle is known, its
nature should be reported. If it is not
known and only the down hole
lengths are reported, there should be
a clear statement to this effect (e.g.
‘down hole length, true width not
known’).

The mineralised zones at Admiral Bay are approximately tabular and flat lying to shallowly dipping, at a
nominal depth of 1,350m below the surface.

Mineralisation is generally intersected with near true width down hole lengths.
Diagrams Appropriate maps and sections (with
scales) and tabulations of intercepts
should be included for any significant
discovery
being
reported
These
should include, but not be limited to
a plan view of drill hole collar
locations and appropriate sectional
views.

Refer to Figures in the body of the report
Balanced reporting Where comprehensive reporting of
all
Exploration
Results
is
not
practicable, representative reporting
of both low and high grades and/or
widths should bepracticed to avoid

Results from all drill holes within the project tenements are reported

The table of drill intersections above includes some isolated regional holes with that intersected
mineralisation but not all regional holes are reported

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Criteria Section 2 JORC Code explanation Commentary
misleading reporting of Exploration
Results.
Other substantive exploration data Other exploration data, if meaningful
and material, should be reported
including
(but
not
limited
to):
geological observations; geophysical
survey results; geochemical survey
results; bulk samples – size and
method of treatment; metallurgical
test
results;
bulk
density,
groundwater, geotechnical and rock
characteristics; potential deleterious
or contaminatingsubstances.

Wireline logging suites comprising gamma, calliper, density, neutron, resistivity, self‐potential,
temperature, compensated sonic and magnetic deviation are available for all drill holes.

Extensive 2D seismic data both from dedicated surveys at Admiral Bay and from regional petroleum
exploration work are available for the project area.

Metallurgical, geotechnical, hydrogeological and mining studies have been completed on the project.
Further work The nature and scale of planned
further work (e.g. tests for lateral
extensions or depth extensions or
large‐scale step‐out drilling).

PLD aims to design exploration and resource evaluation programmes to test the controls on and
continuity of mineralisation at Admiral Bay. Work to increase the understanding of the continuity of
geology and mineralisation are fundamental to advancing the project. Planned work includes additional
drillingas well as application of suitablegeophysical techniques.
Diagrams clearly highlighting the
areas
of
possible
extensions,
including
the
main
geological
interpretations and future drilling
areas, provided this information is
not commerciallysensitive.

Work is not yet sufficiently advanced to enable delineation of new target areas and zones of potential
extensions to mineralisation.
Section 3 Criteria JORC Code explanation Commentary
Section 3 Estimation and Reporting of Mineral Resources
Database integrity Measures taken to ensure that data
has not been corrupted by, for
example, transcription or keying
errors, between its initial collection
and its use for Mineral Resource
estimationpurposes.

Data used in the Mineral Resource estimate was supplied by Digirock Pty Ltd. It is primarily sourced from
a Microsoft Access database and converted to comma delimited text files for drillhole and assay data.
Wireframes of Formation tops and mineralised zones were provided in CAD DXF format. All provided
data were import into Datamine software for use in the Mineral Resource estimate.
Data validation procedures used.
Database information was validated against previous data supplied for Admiral Bay, imported and
desurveyed. Validation of the data import include checks for overlapping intervals, missing survey data,
missingand incorrectlyrecorded assaydata,missinglithological data,and missingcollars.

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Section 3 Criteria JORC Code explanation Commentary
Site visits Comment
on
any
site
visits
undertaken
by
the
Competent
Person and the outcome of those
visits.

No site visit was undertaken as part of the resource estimation.

A CSA geologist was present in 1988 during drilling and seismic acquisition activities by CRAE
If no site visits have been undertaken
indicate why this is the case.

CSA Global conducted a desktop review on the basis of the reports prepared by Digirock, Coffey, Kagara,
RSV Australia. Currently, no exploration and drilling activities are being carried out at the deposit to be
observed.
Geological interpretation Confidence in (or conversely, the
uncertainty
of)
the
geological
interpretation of the mineral deposit.

Drillhole data spacing is highly variable and limited. Drilling has targeted the 285° striking mineralisation
at approximately 2.6km of strike length in the model area. Definition of mineralisation across strike is
limited with only 4 of the oblique sections have 2 or more drillholes.

The zones are currently interpreted to be coincident with an antiformal structure associated with the
Admiral Bay Fault Zone (ABFZ). Mineralisation appears to be relatively continuous along the strike of the
anticline, but lower grade / less well developed on the limbs. However, the limbs areas are poorly
defined or tested by drilling.

While structural continuity appears to be predictable, grade continuity within the mineralised zones
remains relatively uncertain for some of the defined zones and is not adequately defined / constrained
by the current drillhole spacing.

The assaying data is slightly incomplete. For the 6,117 data intervals only 6,017 have data for Zn, Pb, Cu.
Sulphur data was limited only the Kagara drillholes and there were only 2,429 intervals. Ba data was
present for 4,437 intervals with some selectivity on portions of drillholes
Nature of the data used and of any
assumptions made.

Drillhole intercept logging and assay results have formed basis for the geological interpretation.
The effect, if any, of alternative
interpretations on Mineral Resource
estimation.

The precise limits and geometry cannot be absolutely defined due to the limitations of the current drill
coverage. Further work is required to better define the geometry and limits of the mineralised zones.
The use of geology in guiding and
controlling
Mineral
Resource
estimation.

The grade and lithological interpretation forms the basis for the modelling. Coffey Mining developed a
geological and mineralisation framework suitable for grade estimation based on a review of the available
geological andgeochemical data.
The factors affecting continuity both
of grade and geology.

The Mississippi Valley Type Lead‐Zinc mineralisation is interpreted to be coincident with an antiformal
structure associated with the Admiral Bay Fault Zone. Mineralisation appears to be broadly continuous
along the strike of the anticline, but lower grade / less well developed on the limbs, however the local
distribution ofgrade ispotentiallyless continuous.
Dimensions The extent and variability of the
Mineral
Resource
expressed
as
length (along strike or otherwise),
plan width, and depth below surface

Five individual mineralised zones were interpreted based on the drillhole sample data using approximate
1.5‐2% Zn and/or Pub cut‐offs to define coherent zones of sulphide mineralisation.

The currently interpreted mineralised zones extend for approximately 2.6 km along 2850NW strike. The
width of the zones varies from 150m to 670m with maximum 50m thickness for individual mineralised

Page 24 of 28

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Section 3 Criteria JORC Code explanation Commentary
to the upper and lower limits of the
Mineral Resource.
envelopes. The mineralised zones extend from the depth of 1,160m to the depth of 1,500m below the
surface.
Estimation and modelling techniques The nature and appropriateness of
the estimation technique(s) applied
and
key
assumptions,
including
treatment of extreme grade values,
domaining, interpolation parameters
and
maximum
distance
of
extrapolation from data points. If a
computer
assisted
estimation
method
was
chosen
include
a
description of computer software
andparameters used.

All Zn, Pb, Cu, Ag, Total Sulphur and Ba variables estimated in the Admiral Bay resource model
mineralised zones were generated using Inverse Distance (ID) using a power of 2. The ID estimates have
been completed using Datamine software. Block discretisation of 5x5x2 points (for X by Y by Z
respectively) was used for block estimation. Composite length and bulk density weighting was used in
the estimation process.
The availability of check estimates,
previous estimates and/or mine
production records and whether the
Mineral Resource estimate takes
appropriate account of such data.

No previous estimates have been completed for this deposit, and no mining has taken place. The grade
estimates were validated against the data used to create them, both visually and statistically.
The assumptions made regarding
recoveryof by‐products.

No assumption have been made
Estimation of deleterious elements
or other non‐grade variables of
economic significance (e.g. sulphur
for
acid
mine
drainage
characterisation).

Cu, Ag, Total Sulphur and Ba, F
In
the
case
of
block
model
interpolation, the block size in
relation to the average sample
spacing and the search employed.

The block model was constructed using a 25mE by 25mN by 5mRL parent block size, with subcelling to
6.25mE by 6.25mN by 1.25mRL for domain volume resolution. The parent cell size was chosen on the
basis of the general morphology of mineralised bodies and in order to avoid the generation of too large
block models. The subcelling size was chosen to maintain the resolution of the mineralised bodies.

For all variables estimated (Zn, Pu, Cu, Ag, Sr, and Ba), a two‐pass estimation strategy has been applied,
with progressively expanded sample searches applied to successive estimation passes only considering
blocks not previously assigned.
o
First pass searches used an anisotropic range of 600x300x300 metres with major axis oriented
horizontally along strike
o
If a block was not estimated in the first pass, a second pass search utilised a maximum range of
1200x600x600 metres.

The use of similar search radii for the semi‐major and minor axis orientations considered the narrow
structures beingmodelled,the variable orientations and curvature of the structures,and erratic

Page 25 of 28

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Section 3 Criteria JORC Code explanation Commentary
distribution of data within the mineralised zones.

The maximum number of composites used for any estimate was restricted to 20 composites for all
estimated variables.

The minimum number of composites used for any first pass estimate was 10 composites for all estimated
variables.

The minimum number of composites used for any second pass estimate was 2 composites for all
estimated variables.

No octant or other search constraint was applied

All mineralised zone divisions were treated as hard boundaries for data and parameters used in the
estimationprocess.
Any assumptions behind modelling of
selective miningunits.

The block model size was selected largely as a compromise for adequate volume definition of the narrow
mineralised zones in an underground miningscenario.
Any assumptions about correlation
between variables.

Metal zonation occurs vertically through the mineralised zones and has the following characteristics:
o
Higher zinc grades in upper zones
o
Higher Pb grades in lower zones
o
Ag grades are anomalous throughout all mineralised zones, but increase with depth.
o
Bagrades tend to be higher in the lower mineralised zones.
Description of how the geological
interpretation was used to control
the resource estimates.

Five individual mineralised zones were interpreted based on the drillhole sample data using approximate
1.5‐2% Zn and/or Pb cut‐offs to define coherent zones of sulphide mineralisation. The zones are currently
interpreted to be coincident with an biohermal structure associated with the Admiral BayFault Zone
Discussion of basis for using or not
using grade cutting or capping.

Assessment of the composite data was completed to determine the requirement for high grade cutting.
Limited and light high grade cuts were applied to the Zn, and Pb data. It should be noted that there are
small amounts of data available within the individual mineralised zones for assessment and
determination of possible outliers, and definition of appropriate high grade cuts may change significantly
with additional data.
The
process
of
validation,
the
checking
process
used,
the
comparison of model data to drill
hole data, and use of reconciliation
data if available.

Validation of the block model consisted of comparison of the block model volume to the wireframe
volume. Grade estimates were validated by statistical comparison with the drill data, visual comparison
of grade trends in the model with the drill data trends. No reconciliation data is available at this early
stage of the project.
Moisture Whether the tonnages are estimated
on a dry basis or with natural
moisture,
and
the
method
of
determination
of
the
moisture
content.

The tonnages are estimated on a dry basis
Cut‐off parameters The basis of the adopted cut‐off
grade(s)
or
quality
parameters

Reported using a Zinc Equivalent lower cut‐off grade of 7.7%

The Mineral Resource isquoted from estimated blocks above this cut‐offgrade.

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Section 3 Criteria JORC Code explanation Commentary
applied.
Mining factors or assumptions Assumptions
made
regarding
possible mining methods, minimum
mining dimensions and internal (or, if
applicable, external) mining dilution.
It is always necessary as part of the
process of determining reasonable
prospects for eventual economic
extraction
to
consider
potential
mining
methods,
but
the
assumptions made regarding mining
methods
and
parameters
when
estimating Mineral Resources may
not always be rigorous. Where this is
the case, this should be reported
with an explanation of the basis of
the miningassumptions made.

Initial study work by Mining Plus indicated that a modified sub‐level cave (SLC) would be the most
appropriate method to mine the deposit. However, additional work by Kevin Rosengren concluded that
whilst an uphole retreat sub‐level cave mining method may be practical it was not optimal or ideal. It
suggested that some form of modified room‐and‐pillar method may be appropriate.

A subsequent study was carried out by Snowden to test the viability of the project based on the known
resource. Snowden’s geotechnical work, coupled with a cursory literature survey, indicates that an
adaptation of a room‐and‐pillar mining method with paste fill is most appropriate from both a
geotechnical and a risk perspective.
Metallurgical factors or assumptions The
basis
for
assumptions
or
predictions regarding metallurgical
amenability. It is always necessary as
part of the process of determining
reasonable prospects for eventual
economic extraction to consider
potential metallurgical methods, but
the
assumptions
regarding
metallurgical treatment processes
and
parameters
made
when
reporting Mineral Resources may not
always be rigorous. Where this is the
case, this should be reported with an
explanation of the basis of the
metallurgical assumptions made.

The test work was carried out in the first half of 2009 at Optimet laboratories. The test work was
conducted on various composite samples obtained from Kagara.

The Pb and zinc grades are quite variable. The orebody is not homogenous. The better understanding of
the grade variability will emerge as the variography testing results become available. Four mineralised
zones are identified.

Four composites: Zn+Pb+Ba (with and without hydrocarbons) and Pb+Ba (with and without
hydrocarbons), were examined.

The findings of the Optimet work were that recoveries in excess of up to 95% lead and 90% Zn were
possible. Silver recoveries were 56% in Zn concentrate and 46% in Pb concentrate, in Kagara testwork
though CRAE reported recoveries for Zn, Pb and Ag in excess of 95%.
Metallurgical test work has shown that coarse grained very high quality lead and zinc concentrates could
be produced at recoveries in excess of 90% into very high quality concentrates:
Zinc concentrate grade of +55% Lead concentrate grade of +70%
Environmental
factors
or
assumptions
Assumptions
made
regarding
possible waste and process residue
disposal
options.
It
is
always
necessary as part of the process of
determining reasonable prospects for
eventual economic extraction to

The establishment of a mine and processing facility at the Admiral Bay site will have significant impact on
a large area.

However, only limited environmental monitoring and studies have as yet been completed.

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Section 3 Criteria JORC Code explanation Commentary
consider the potential environmental
impacts of the mining and processing
operation. While at this stage the
determination
of
potential
environmental impacts, particularly
for a greenfields project, may not
always be well advanced, the status
of early consideration of these
potential
environmental
impacts
should be reported. Where these
aspects have not been considered
this should be reported with an
explanation of the environmental
assumptions made.
Bulk density Whether assumed or determined. If
assumed,
the
basis
for
the
assumptions. If determined, the
method used, whether wet or dry,
the frequency of the measurements,
the
nature,
size
and
representativeness of the samples.

No documentation was provided regarding collection of bulk density data. Data in the drillhole database
suggest that the data was collected on‐site using the Archimedean method on either half core or whole
core samples. The database contains 906 bulk density determinations.
The bulk density for bulk material
must
have
been
measured
by
methods that adequately account for
void spaces (vughs, porosity, etc.),
moisture and differences between
rock and alteration zones within the
deposit.

No documentation was provided regarding collection of bulk density data.
Discuss assumptions for bulk density
estimates used in the evaluation
process of the different materials.

Bulk density data was allocated to the corresponding raw sample intervals containing assay data. It
should be noted that the bulk density intervals tended to be smaller and selective relative to the assay
intervals.

For bulk density weighting during compositing and estimation, assay intervals not having bulk densities
were assigned bulk densities based on linear regression of the Ba% data

For bulk density weighting during compositing and estimation, assay intervals not having bulk densities
were assigned bulk densities based on linear regression of the Ba% data
Classification The basis for the classification of the
Mineral
Resources
into
varying
confidence categories.

The Inferred Mineral Resource classification is based on the evidence from the available drill sampling
and seismic interpretation. This evidence is sufficient to imply but not verify geological and grade
continuity.

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Section 3 Criteria JORC Code explanation Commentary
Whether appropriate account has
been taken of all relevant factors (i.e.
relative confidence in tonnage/grade
estimations, reliability of input data,
confidence in continuity of geology
and metal values, quality, quantity
and distribution of the data).

The Inferred classification has taken into account all available geological and sampling information, and
the classification level is considered appropriate for the current stage of this project.
Whether the result appropriately
reflects the Competent Person’s view
of the deposit.

The Mineral Resource estimate appropriately reflects the view of the Competent Person
Audits or reviews The results of any audits or reviews
of Mineral Resource estimates.

The original Coffey 2008 MRE was audited by Snowden in 2010. Snowden’s opinion was that the ID2 MRE
inappropriately smooths the continuity and grade variability of the deposit” and recommended that
conditional simulation methods be used to investigate the resource.

Conditional Simulation using MAF (Minimum/Maximum Autocorrelation Factors, used to preserve multi‐
element correlations) generated 20 grade realisations for the deposit.

CSA consider that using Conditional Simulation modelling to understand the risk associated with the
resource is appropriate; the Snowden work demonstrated a risk due to variability in the range of ±5Mt
and ±0.6%ZnEq. Given the mineralisation style, CSA consider this a very conservative assessment.

CSA Global undertook a review of the 2008 MRE for this report. CSA’s comments are included
throughout this Table 1.
Discussion
of
relative
accuracy/
confidence
Where appropriate a statement of
the relative accuracy and confidence
level
in
the
Mineral
Resource
estimate using an approach or
procedure deemed appropriate by
the Competent Person. For example,
the application of statistical or
geostatistical procedures to quantify
the relative accuracy of the resource
within stated confidence limits, or, if
such an approach is not deemed
appropriate, a qualitative discussion
of the factors that could affect the
relative accuracy and confidence of
the estimate.

The relative accuracy of the Mineral Resource estimate is reflected in the reporting of the Mineral
Resource to an Inferred classification as per the guidelines of the 2012 JORC Code
The
statement
should
specify
whether it relates to global or local
estimates,and,if local,state the

The statement refers to global estimation of tonnes and grade

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Section 3 Criteria JORC Code explanation Commentary
relevant tonnages, which should be
relevant to technical and economic
evaluation. Documentation should
include assumptions made and the
procedures used.
These
statements
of
relative
accuracy and confidence of the
estimate should be compared with
production data,where available.

No production data is available; this is an advanced exploration project

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