Skip to main content

AI assistant

Sign in to chat with this filing

The assistant answers questions, extracts KPIs, and summarises risk factors directly from the filing text.

CORE LITHIUM LTD Capital/Financing Update 2018

Aug 21, 2018

64737_rns_2018-08-21_b729b133-b7c2-4dc9-83eb-3c9a8287c7b6.pdf

Capital/Financing Update

Open in viewer

Opens in your device viewer

==> picture [594 x 114] intentionally omitted <==

ASX: CXO ANNOUNCEMENT

22[nd] August 2018

More Wide High-grade Lithium Intersections Further Grow Potential of BP33

HIGHLIGHTS

  • Wide and high-grade lithium assay results continue at BP33 Prospect from RC drilling designed to grow the existing resource base:

o 63m @ 1.50% Li2O from 76m (FRC 169)

  • 43m @ 1.78% Li2O from 157m (FRC166) including:

▪ 10m @ 2.00% Li2O from 159m

o 59m@ 1.59% Li2O from 198m (FRC 174) including:

▪ 25m @ 2.00% Li2O from 222m

  • The wide spodumene intersections indicate an increased thickness and grade down-plunge;

  • Additional RC drill assays pending from BP33;

  • Follow-up phase of diamond drilling to re-commence shortly at BP33 ahead of new resource estimation;

  • Second round of resource extension RC/DD drilling is advancing well at Grants;

  • Exploration RC rig has recently commenced drilling at Sandra’s prospect.

1

Core Exploration Limited | ABN 80 146 287 809 |ASX: CXO

www.coreexploration.com.au

==> picture [594 x 114] intentionally omitted <==

Emerging Australian lithium developer, Core Exploration Ltd (ASX: CXO) (“ Core ” or the “ Company ”), is pleased to announce several new high-grade intersections returned from the current RC drilling program designed to grow the existing resource base at the BP33 Prospect within Core’s 100%-owned Finniss Lithium Project near Darwin in the Northern Territory.

Core’s most recent phase of drilling has focused on the potential southern extension of the current resource and infill at BP33 and has achieved a number of outstanding intersections including:

43m @ 1.78% Li2O from 157m (FRC166) including: o 10m @ 2.00% Li2O from 159m and 9m @ 1.35% Li2O from 207m • 47m @ 1.30% Li2O from 65m (FRC168) • 63m @ 1.50% Li2O from 76m (FRC169) • 17m @ 0.98% Li2O from 199m (FRC172) and 21m @ 1.47% Li2O from 239m • 59m @ 1.59% Li2O from 198m including (FRC174): o 25m @ 2.00% Li2O from 222m and 12m @ 1.11% Li2O from 182m

The current extensional drilling at BP33 will be incorporated into a new Mineral Resource estimate in the coming months and is expected to have a positive impact on estimates.

Similarly, new drilling positioned within the currently defined Resource at BP33 is expected to enable an upgrade in the classification of the BP33 Mineral Resource to higher confidence categories (Figures 1 and 2).

The drilling demonstrated that BP33 continues and appears to increase in width and grade at depth immediately south of the current Resource area. In the very south of the deposit, drill intersections of pegmatite tend to become broken up by intervals of host rock, so it would appear that the pegmatite changes from a coherent tabular body to a segmented series of narrower sheets, dipping at between 75 and 45 degrees to the east. Holes in the far south that were testing for continuation in that direction showed that indeed it continues but is thinner and less mineralised (Figures 1 and 2).

2

Core Exploration Limited | ABN 80 146 287 809 |ASX: CXO

www.coreexploration.com.au

==> picture [594 x 114] intentionally omitted <==

Drilling in the central part of the body intersected thicker and higher-grade pegmatite than expected and highlights the strong potential for a broader plunging ore body than previously forecast at BP33. Grades below approximately 100m RL tend to be well above the Mineral Resource average of 1.4% Li2O, with continuous intervals up to 25m grading over 2% Li2O (see Table 1).

Drilling: Next Steps

BP33

A follow-up phase of predominantly diamond drilling is planned over the coming weeks focusing on better defining the potential eastern, southern and deeper extensions of the BP33 ore body.

Grants

The follow-up resource extension drill program at Grants is currently progressing well with results expected through September (Figure 3).

Sandras, Booths, Lees, Carlton, Hang Gong

Exploration drilling is currently underway at the spodumene pegmatite at Sandra’s (Figure 4).

Exploration drilling will also be testing prospective spodumene pegmatites at Booths and Lees and looking to further define spodumene mineralisation recently identified at Carlton and Hang Gong over coming weeks (Figures 3 and 4).

Core’s Managing Director, Stephen Biggins commented:

“The high lithium grades and thicknesses in these new drillholes are positive for expanding and increasing the confidence level of the Resource at BP33 over coming months. The higher grades and improved continuity from our recent drilling should potentially have a material impact on the economics of the Finniss Lithium Project.

The addition of BP33, as well as the potential for further mineralisation across the project, highlights the significant value that we are building for shareholders.

We are busy with the Finniss BFS and look forward to increasing the mine life and value of the project.”

3

Core Exploration Limited | ABN 80 146 287 809 |ASX: CXO

www.coreexploration.com.au

==> picture [594 x 114] intentionally omitted <==

==> picture [404 x 586] intentionally omitted <==

Figure 1. Drill hole plan for BP33.

4

Core Exploration Limited | ABN 80 146 287 809 |ASX: CXO

www.coreexploration.com.au

==> picture [594 x 114] intentionally omitted <==

==> picture [407 x 594] intentionally omitted <==

Figure 2. Drill cross-section in central BP33.

5

Core Exploration Limited | ABN 80 146 287 809 |ASX: CXO

www.coreexploration.com.au

==> picture [594 x 114] intentionally omitted <==

For further information please contact:

For Media and Broker queries:

Stephen Biggins Andrew Rowell Managing Director Director - Investor Relations Core Exploration Ltd Cannings Purple +61 8 7324 2987 +61 400 466 226 [email protected] [email protected]

Competent Persons Statements

The information in this report that relates to Exploration Results and Mineral Resources is based on information compiled by Stephen Biggins (BSc(Hons)Geol, MBA) an employee of Core Exploration Ltd who is a member of the Australasian Institute of Mining and Metallurgy and is bound by and follows the Institute’s codes and recommended practices. He has sufficient experience which is relevant to the styles of mineralisation and types of deposits under consideration and to the activities 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 Biggins consents to the inclusion in the report of the matters based on his information in the form and context in which it appears. This report includes results that have previously been released under JORC 2012 by Core.

Core confirms that it is not aware of any new information or data that materially affects the information included in this announcement and that all material assumptions and technical parameters underpinning the Mineral Resource estimates in the announcements “Grants Lithium Resource Upgrade” dated 8 May 2018 and “Maiden Resource Estimate at BP33” dated 23 May 2018 continue to apply and have not materially changed. The Mineral Resources underpinning the production target have been prepared by a Competent Person in accordance with the requirements of the JORC code.

Core confirms that all material assumptions underpinning production target and forecast financial information derived from the product target announced on 25 June 2018 continue to apply and have not materially changed.

6

Core Exploration Limited | ABN 80 146 287 809 |ASX: CXO

www.coreexploration.com.au

==> picture [594 x 114] intentionally omitted <==

Hole
No.
GDA94
Grid
Easting
GDA94
Grid
Northing
From (m) To (m) Interval
(m)
Grade
(Li2O %)
FRC161 694477.0 8593382.0 127.0 140.0 13.0 1.05
FRC162 694435.0 8593375.0 66.0 74.0 8.0 0.98
FRC163 694477.0 8593258.0 74.0 75.0 1.0 0.44
FRC164 694480.0 8593217.0 No Significant I ntercepts
FRC165 694266.0 8593177.0 No Significant Intercepts
FRC166 694516.0 8593428.0 157.0 200.0 43.0 1.78
including 159.0 169.0 10.0 2.00
including 192.0 199.0 7.0 2.01
and 207.0 216.0 9.0 1.35
including 207.0 210.0 3.0 2.60
FRC167 694528.0 8593483.0 147.0 186.0 39.0 1.28
including 167.0 170.0 3.0 2.14
including 175.0 179.0 4.0 2.18
FRC168 694457.0 8593550.0 65.0 112.0 47.0 1.30
FRC169 694420.0 8593510.0 76.0 139.0 63.0 1.50
FRC170 694329.0 8593419.0 156.0 174.0 18.0 0.73
FRC171 694369.0 8593421.0 No Significant Intercepts
FRC172 694480.0 8593408.0 199.0 216.0 17.0 0.98
including 199.0 200.0 1.0 3.02
and 239.0 260.0 21.0 1.47
and 225.0 226.0 1.0 0.41
FRC173 694335.0 8593500.0 236.0 262.0 26.0 1.11
and 157.0 160.0 3.0 1.24
and 220.0 222.0 2.0 0.58
and 225.0 227.0 2.0 0.56
FRC174 694390.0 8593554.0 198.0 257.0 59.0 1.59
including 222.0 247.0 25.0 2.00
and 182.0 194.0 12.0 1.11
and 96.0 100.0 4.0 0.35

(i) Mean grades have been calculated on a 0.4% Li2O lower cut-off grade with no upper cut-off grade applied, and maximum length of consecutive internal waste of 3.0 metres.

Table 1. All recently received drill hole assay data for the recent RC drilling at BP33.

7

Core Exploration Limited | ABN 80 146 287 809 |ASX: CXO

www.coreexploration.com.au

==> picture [594 x 114] intentionally omitted <==

==> picture [393 x 563] intentionally omitted <==

Figure 3. Recent exploration and drilling at pegmatite prospects within the Finniss Lithium Project near Darwin in the NT.

8

Core Exploration Limited | ABN 80 146 287 809 |ASX: CXO

www.coreexploration.com.au

==> picture [594 x 114] intentionally omitted <==

==> picture [407 x 573] intentionally omitted <==

Figure 4. Pegmatite prospects within the Finniss Lithium Project near Darwin, NT

9

Core Exploration Limited | ABN 80 146 287 809 |ASX: CXO

www.coreexploration.com.au

==> picture [594 x 114] intentionally omitted <==

JORC Code, 2012 Edition – Table 1 Report Template

Section 1 Sampling Techniques and Data

(Criteria in this section apply to all succeeding sections)

Criteria JORC Code Explanation Commentary
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 meaning of sampling.
Include reference to measures taken to ensure sample representivity and the
appropriate calibration of any measurement tools or systems used.
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.
• Drilling geology results reported herein relate to RC and DD drill holes at the
BP33 Prospect on ELs 29698 and 30015
• RC drill holes FRC161 to FRC175 were drilled during July 2018 - assays not
yet received for FRC175. A full list of hole collars that includes coordinates,
azimuth, dip and depth can be found in Drillhole Information section below,
and significant intercepts information is contained tables in the body of the
report.
• The azimuth of Core’s drill holes is oriented approximately perpendicular to
the interpreted strike of the mineralised trend. Holes are oblique in a dip
sense (see Section).
• Core’s RC drill spoils are collected into two sub-samples:
o
1 metre split sample, homogenized and cone split at the cyclone
and then calico-bagged. Usually these weigh 2-3 kg.
o
30-40 kg primary sample is collected in green bags and retained
until assays have been returned and deemed reliable for reporting
purposes.
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.).

Drilling technique used by Core and reported herein comprises Schramm
685 RC rig: Standard Reverse Circulation (RC) 5 and ¼ inch face sampling
hammer (5.5-inch diameter bit). The Schramm 685 RC Drill Rigg used is a
wheel mounted rig and running a stand-alone 2500CFM 850 PSI
compressor/booster combo. The rig is operated by Swick Mining Services,
South Guildford,WA.

Core Exploration Limited | ABN 80 146 287 809 |ASX: CXO

www.coreexploration.com.au

==> picture [594 x 114] intentionally omitted <==

  • Drill sampleMethod of recording and assessing core and chip sample recoveries and recovery results assessed.

  • Measures taken to maximise sample recovery and ensure representative nature of the samples.

  • 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.

  • RC sample recoveries were visually estimated in the field and recorded by Core geologists for each metre drilled. RC recoveries are monitored qualitatively as the hole progresses.

  • A semi-quantitative estimate of % recovery for the sampling intervals is subsequently made after completion of the hole, once the average volume of material can be gauged for a metre of drilling.

  • The rigs splitter is emptied between 1m samples by hammering the cyclone bin with a mallet. The set-up of the cyclone varied between rigs, but a gate mechanism was used to prevent inter-mingling between metre intervals. The cyclone and splitter were also regularly cleaned by opening the doors, visually checking, and if build-up of material is noted, the equipment cleaned with either compressed air or high-pressure water. This process was in all cases undertaken when the drilling first penetrated the pegmatite mineralization, to ensure no host rock contamination took place.

  • Recoveries in most holes were both dry and close to 100%, but some wet intervals have been recorded where recovery can be as little as 40%. Core have undertaken substantial QAQC of recovery vs grade data and have concluded that there is no relationship.

• Drill collars are sealed to prevent sample loss and holes are normally drilled dry to prevent poor recoveries and contamination caused by water ingress. Wet intervals are noted in case of unusual results. • Standard sample logging procedures are utilised by Core, including logging codes for lithology, minerals, weathering etc. • Geology of the RC drill chips were logged on a metre basis with attention to main rock forming minerals within the pegmatite intersections. • Entire drilled interval of RC logged. • Pegmatite sections are also checked under a single-beam UV light for spodumene identification on an ad hoc basis. These only provide indicative qualitative information. • Estimation of mineral modal composition, including spodumene, is done visually. This will then be correlated to assay data when they are available.

Logging Whether core and chip samples have been geologically and geotechnically • Standard sample logging procedures are utilised by Core, including logging
logged to a level of detail to support appropriate Mineral Resource codes for lithology, minerals, weathering etc.
estimation, mining studies and metallurgical studies. • Geology of the RC drill chips were logged on a metre basis with attention to
Whether logging is qualitative or quantitative in nature. Core (or costean, main rock forming minerals within the pegmatite intersections.
channel, etc.) photography. • Entire drilled interval of RC logged.
The total length and percentage of the relevant intersections logged. • Pegmatite sections are also checked under a single-beam UV light for
spodumene identification on an ad hoc basis. These only provide indicative
qualitative information.
• Estimation of mineral modal composition, including spodumene, is done
visually. This will then be correlated to assaydata when theyare available.

Core Exploration Limited | ABN 80 146 287 809 |ASX: CXO

www.coreexploration.com.au

==> picture [594 x 114] intentionally omitted <==

• RC chiptrays arephotographed and stored on the Core server.
Sub-sampling
techniques
and sample
preparation
If core, whether cut or sawn and whether quarter, half or all core taken.
If non-core, whether riffled, tube sampled, rotary split, etc. and whether
sampled wet or dry.
For all sample types, the nature, quality and appropriateness of the sample
preparation technique.
Quality control procedures adopted for all sub-sampling stages to maximise
representivity of samples.
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.
Whether sample sizes are appropriate to the grain size of the material being
sampled.
• RC samples referred to in this report have been collected on a 1m-basis
utilising the cone splitter mounted under the drill rig’s cyclone.
• Where the sample was too wet for the cone splitter to operate, 1m samples
were collected from the 1m bulk bags using a spear.
• The type of sub-sampling technique and the quality of the sub-sample was
recoded for each metre. The quality of the samples was assessed prior to
their inclusion in calculated interval averages.
Field RC duplicates
• A field duplicate sample regime is used to monitor sampling methodology
and homogeneity of RC drilling. During the current drilling, the
sample:duplicate ratio is roughly 20:1. The typical procedure was to collect
Duplicates via a spear of the green RC bag, having collected the Original in a
calico bag via a rotary split.
• Results of duplicate analysis show an acceptable degree of correlation given
the heterogeneous nature of the pegmatite.
Sample preparation
• Sample prep occurs at North Australian Laboratories (“NAL”), Pine Creek,
NT.
• A 1-2 kg riffle-split of RC Samples are prepared by pulverising to 95%
passing-100 um usingsteel RingMills.
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.
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.
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.
• Sample analysis also occurs at North Australian Laboratories, Pine Creek,
NT.
• A 0.3 g sub-sample of the pulp is digested in a standard 4 acid mixture and
analysed via ICP-MS and ICP-OES methods for the following elements: Li, Cs,
Rb, Sr, Nb, Sn, Ta, U, As, K, P, S and Fe. The lower and upper detection range
for Li by this method are 1 ppm and 5000 ppm respectively.
• A 3000 ppm Li trigger has been set to process that sample via a fusion
method - a 0.3 g sub-sample is fused with a Sodium Peroxide Fusion flux
and then digested in 10% hydrochloric acid. ICP-OES is used for the
followingelements: Li,P and Fe. The lower and upper detection range for Li

Core Exploration Limited | ABN 80 146 287 809 |ASX: CXO

www.coreexploration.com.au

==> picture [594 x 114] intentionally omitted <==

by this method are 10 ppm and 20,000 ppm respectively.
• A barren flush is inserted between samples at the laboratory.
• The laboratory has a regime of 1 in 8 control subsamples.
• NAL utilise standard internal quality control measures including the use of
Certified Lithium Standards and duplicates/repeats.
• CXO-implemented quality control procedures include:
o
One in twenty certified Lithium ore standards are used for
this drilling.
o
One in twenty duplicates are used for this drilling.
o
Blanks inserted at a rate of roughly one in twenty.
• Assessment of thisQAQC data indicates excellent dataquality.
Verification of
sampling and
assaying
The verification of significant intersections by either independent or
alternative company personnel.
The use of twinned holes.
Documentation of primary data, data entry procedures, data verification,
data storage (physical and electronic) protocols.
Discuss any adjustment to assay data.
• Core’s experienced project geologists are supervised by Core’s Exploration
Manager.
• All field data is entered into excel spreadsheets (supported by look-up
tables) at site and subsequently validated as it is imported into the
centralized CXO Access database.
• Hard copies of survey and sampling data are stored in the local office and
electronic data is stored on the Core server.
• Metallic Lithium percent was multiplied by a conversion factor of
2.15283/10000 to report Lippm as Li2O%
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.
Specification of the grid system used.
Quality and adequacy of topographic control.
• Coordinate information for the drillholes was collected by Hand-held GPS,
and will in due course be picked up by DGPS. The collar RLs were calculated
using CXO’s DTM, which is far more accurate than the handheld GPS.
• All are GDA94 Zone 52.
• RC hole traces were surveyed by north seeking gyro tool (multishot mode at
5m and 10m intervals) operated by the drillers and the collar is oriented by
a line of sight compass and a clinometer. Downhole Camera shots are also
taken on an ad hoc basis during drilling to ensure the holes are kept
relatively straight.
• Drill hole deviation has been minor and predictable in the most part.
However,for the deeper holes,deviation was significant in the lowerparts

Core Exploration Limited | ABN 80 146 287 809 |ASX: CXO

www.coreexploration.com.au

==> picture [594 x 114] intentionally omitted <==

of the holes as a result of hard bedrock. Despite this, the holes still tested
the targets roughly oblique to the strike of the pegmatite, which is
acceptable for resource drilling. In any case, the gyro down hole survey has
accurately recorded the drill traces and any deviation from the planned
program can be accommodated in a 3D GIS environment.
Data spacing
and
distribution
Data spacing for reporting of Exploration Results.
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.
Whether sample compositing has been applied.
• Drill collars are spaced approximately 40m apart along the north-easterly
trending pegmatite body of BP33.
• This data may be used to support a resource.
• Refer to figures in report.
• Sample compositing reported here are calculated length weighted averages
of the assays. Length weighted averages are acceptable method because
the densityof the rock(pegmatite)is constant.
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, considering the deposit
type.
If the relationship between the drilling orientation and the orientation of key
mineralised structures is considered to have introduced a sampling bias, this
should be assessed and reported if material.
• Core’s drilling is oriented perpendicular to the interpreted strike of
mineralization (pegmatite body) as mapped or predicted by the geological
model. In some areas the rocks may trend at an angle to the drill traverse.
Because of the dip of the hole, drill intersections are apparent thicknesses
and overall geological context is needed to estimate true thicknesses.
Sample
security
The measures taken to ensure sample security. • Company geologist supervises all sampling and subsequent storage in field
and transport to point of dispatch to assay laboratories.
Audits or
reviews
The results of any audits or reviews of sampling techniques and data. • Audits or reviews of the sampling techniques were not undertaken

Core Exploration Limited | ABN 80 146 287 809 |ASX: CXO

www.coreexploration.com.au

==> picture [594 x 114] intentionally omitted <==

Section 2 Reporting of Exploration Results

(Criteria listed in the preceding section also apply to this section)

(Criteria listed in the preceding section also apply to this section)
Criteria JORC Code explanation Commentary
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 security of the tenure held at the time of reporting along with any
known impediments to obtaining a licence to operate in the area.
• Drilling by Core at BP33 on what is now ELs 29698 and 30015 that are 100%
owned by Core, the latter via a recent sale agreement (ASX Release 14 Sept
2017).
• The area being drilled comprises Vacant Crown land
• There are no registered heritage sites covering the areas being drilled.
• The tenements are in good standing with the NT DPIR Titles Division.
Exploration
done by other
parties
Acknowledgment and appraisal of exploration by other parties. • The history of mining in the Bynoe Harbour – Middle Arm area dates back
to 1886 when tin was discovered by Mr. C Clark.
• By 1890 the Leviathan Mine and the Annie Mine were discovered and
worked discontinuously until 1902.
• In 1903 the Hang Gong Wheel of Fortune was found and 109 tons of tin
concentrates were produced in 1905. In 1906, the mine produced 80 tons
of concentrates, but it was exhausted and closed down the following year
after a total of 189 tons of concentrates had been won.
• By 1909 activity was limited to Leviathan and Bells Mona mines in the area
with little activity in the period 1907 to 1909.
• Renewed activities in 1925 coincided with the granting of exclusive
prospecting licences over an area of 26 square miles in the Bynoe Harbour –
West Arm section but once again nothing eventuated.
• The records of production for many mines are not complete, and in
numerous cases changes have been made to the names of the mines and
prospects which tend to confuse the records still further. In many cases the
published names of mines cannot be linked to field occurrences.
• In the early 1980s the Bynoe Pegmatite field was reactivated during a
period of high tantalumprices byGreenbushes Tin which owned and

Core Exploration Limited | ABN 80 146 287 809 |ASX: CXO

www.coreexploration.com.au

==> picture [594 x 114] intentionally omitted <==

operated the Greenbushes Tin and Tantalite (and later spodumene) Mine in
WA. Greenbushes Tin Ltd entered into a JV named the Bynoe Joint Venture
with Barbara Mining Corporation, a subsidiary of Bayer AG of Germany.
• Greenex (the exploration arm of Greenbushes Tin Ltd) explored the Bynoe
pegmatite field between 1980 and 1990 and produced tin and tantalite
from its Observation Hill Treatment Plant between 1986 and 1988. An
abandoned open cut to 10m depth remains at BP33.
• They then tributed the project out to a company named Fieldcorp Pty Ltd
who operated it between 1991 and 1995.
• In 1996, Julia Corp drilled RC holes into representative pegmatites in the
field, but like all of their predecessors, did not assay for Li.
• Since 1996 the field has been defunct until recently when exploration has
begun on ascertaining the lithium prospectivity of the Bynoe pegmatites.
• The NT geological Survey undertook a regional appraisal of the field, which
was published in 2004 (NTGS Report 16, Frater 2004).
Geology Deposit type, geological setting and style of mineralisation. • The tenements cover the northern portion of a swarm of complex zoned
rare element pegmatite field, which comprises the 55km long by 10km wide
West Arm – Mt Finniss pegmatite belt (Bynoe Pegmatite Field; NTGS Report
16). The main pegmatites in this belt include Mt Finniss, Grants, BP33, Hang
Gong and Sandras
• The Finniss pegmatites have intruded early Proterozoic shales, siltstones
and schists of the Burrell Creek Formation which lies on the northwest
margin of the Pine Creek Geosyncline. To the south and west are the
granitoid plutons and pegmatitic granite stocks of the Litchfield Complex.
The source of the fluids that have formed the intruding pegmatites is
generally accepted as being the Two Sisters Granite to the west of the belt,
and which probably underlies the entire area at depths of 5-10 km.
• Lithium mineralisation has been identified as occurring at Bilato’s (Picketts),
Saffums 1 (amblygonite) and more recently at Grants, BP33 and Sandras.

Core Exploration Limited | ABN 80 146 287 809 |ASX: CXO

www.coreexploration.com.au

==> picture [594 x 114] intentionally omitted <==

Drill hole
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:
o easting and northing of the drill hole collar
o elevation or RL (Reduced Level – elevation above sea level in metres) of
the drill hole collar
o dip and azimuth of the hole
o down hole length and interception depth
o hole length.
If the exclusion of this information is justified on the basis that the
information is not Material and this exclusion does not detract from the
understanding of the report, the Competent Person should clearly explain
why this is the case.
• Datum: GDA94,Zone 52
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.
Where aggregate intercepts incorporate short lengths of high 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.
• Sample compositing reported here are calculated length weighted averages
of the assays. Length weighted averages are acceptable method because
the density of the rock (pegmatite) is constant.
• 0.4% Li2O was used as lower cut off grades for compositing with allowance
for including up to 3 m of consecutive drill material of below cut-off grade
(internal dilution).
Relationship
between
mineralisation
widths and
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
• The oblique nature of drillholes with respect to geology is discussed above.
Because of the dip of the hole, drill intersections are apparent thicknesses
and overall geological context is needed to estimate true thicknesses. Refer
figures in report

Core Exploration Limited | ABN 80 146 287 809 |ASX: CXO

www.coreexploration.com.au

==> picture [594 x 114] intentionally omitted <==

intercept
lengths
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’). _
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.
• See figures in release
Balanced
reporting
Where comprehensive reporting of all Exploration Results is not practicable,
representative reporting of both low and high grades and/or widths should
be practiced to avoid misleading reporting of Exploration Results.
• Exploration results are discussed in the report and shown in figures.
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
contaminating substances.
• See release details.
• All meaningful and material data reported.
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).
Diagrams clearly highlighting the areas of possible extensions, including the
main geological interpretations and future drilling areas, provided this
information is not commercially sensitive.
• Core will commence a Diamond core drilling program at BP33, as outlined in
this report. Further assays will be returned in due course.

Core Exploration Limited | ABN 80 146 287 809 |ASX: CXO

www.coreexploration.com.au