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ARIKA RESOURCES LIMITED — Capital/Financing Update 2018
Jan 28, 2018
64420_rns_2018-01-28_3dc0a1e4-5e62-41cc-ba79-949fd993f8a0.pdf
Capital/Financing Update
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ASX RELEASE: 29 JANUARY 2018
HIGH-GRADE ZINC ACQUISITION DRILLING TO COMMENCE
Completion of the acquisition of the high-grade Napier Range Zinc Project, Lennard Shelf, WA.
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Napier Range contains the Wagon Pass deposit which is an Inferred Mineral Resource Estimate (MRE) of 750Kt at 13.6% ZnEq (Table 1), excellent exploration potential with 9 significant targets identified for testing, along a 4km strike extent, with further details below under Exploration Target Range (ETR).
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Napier Range represents a high grade low capital and near term producing zinc project, which complements the development of the large-scale Admiral Bay Zinc Deposit, where JV discussions are advancing.
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Napier Range is classed as a Mississippi Valley Type deposit which typically demonstrate simple and conventional process flowsheet design, high metal recovery and excellent clean concentrate quality.
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Drilling is currently planned for the March Quarter via a previously signed equity funded drilling contract, and subject to requisite approvals and weather permitting.
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Glencore and Teck retain an option to earn 51% if a new JORC Inferred Resource has been discovered, by either sole funding a Feasibility Study or spending A$20M on assessment at Napier Range[*]
Metalicity Limited (ASX:MCT) (“MCT” or “Company”) is pleased to announce that it has completed the acquisition of the high grade Napier Range Zinc Project, located in the Lennard Shelf of the Kimberley Region, WA. Napier Range represents a low capital and near term producing zinc production opportunity with excellent exploration potential with 9 significant targets identified for drill testing along a 4km strike.
Resource and exploration drilling is planned for the March Quarter within the Wagon Pass Deposit as well as along the 4km strike extent at Napier Range, subject to requisite approvals and completion of the wet season in the Lennard Shelf of the Kimberley Region, WA.
At Napier Range, Glencore and Teck (via Lennard Shelf Pty Ltd (a 50:50 joint venture) retain an option to earn a 51% participating interest in the Wagon Pass tenements if a new JORC Inferred Resource has been discovered , by either completing and sole funding a Feasibility Study, or spending $20M on the assessment of the inferred resources.
Metalicity Managing Director, Matt Gauci, commented:
“Securing the Napier Range Zinc Project is a significant step forward for Metalicity’s zinc strategy by providing a potential high grade, low capital, near term zinc development project that complements the pathway for our 100% owned Admiral Bay Zinc Project. Metalicity has completed field work, exploration targeting and base case financial modelling and looks forward to commencing an aggressive exploration program to determine the projects capacity to provide a source of cashflow for the Company’s ongoing advancement of the long-life Admiral Bay Zinc project, while also seeking new discoveries at the Emanuel Range Zinc Project.”
*The Exploration Target Ranges (ETR) stated above are conceptual in nature and the potential quantities and grades are conceptual in nature. There has been insufficient exploration to estimate a Mineral Resource Estimate outside that known at Wagon Pass, and it is uncertain whether further exploration will result in the estimation of additional Mineral Resources.
Metalicity Limited ASX Code: MCT ABN: 92 086 839 992
www.metalicity.com.au 6 Outram Street West Perth WA 6005
Figure 1: Location of the Lennard Shelf Zinc Projects
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Source: Metal i city
Overview
The Lennard Shelf Projects consist of two granted mining licenses, and four exploration licenses comprising the Napier Range Zinc Project and the Emanuel Range Zinc Project ( Error! Reference source not found. ). All are located along the Lennard Shelf, a northwest trending belt between the Proterozoic Kimberley Block and the Fitzroy Trough, the deepest part of the Canning Basin. A carbonate platform and reef complex developed on the margins of the Kimberley Block during the late Devonian, and these rocks host a number of known Mississippi Valley Type (‘MVT’) zinc-lead-silver deposits that have partially been exploited (e.g. Pillara, Cadjebut, Kapok etc). The Lennard Shelf MVT deposits range from dominantly stratiform to dominantly vein or breccia hosted associated with faults, and are known for their simple processing and low levels of deleterious elements, attracting a premium in world markets.
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Napier Range Zinc Project
Geology
In the Napier Range Zinc Project area, the Lennard Shelf Devonian carbonate complex rests unconformably on Proterozoic basement. Zinc-lead-silver mineralisation occurs within fore-reef and reefal slope carbonate rocks, mostly related to two stratigraphic levels: in dolomitised siltstones and limestones of the Lower Napier Formation, and at the upper levels, in limestones of the Upper Napier Formation. The Wagon Pass orebody at Napier Range is dominantly stratabound with minor fault and breccia associated ore. It is located about 12km northwest of the small but very high grade historical Narlarla zinc-lead-silver mine from which about 2,115t of lead, 2,867t zinc and 162t of silver metal were mined between 1948 and 1966. See figure 5 illustrating gossanous dolomite to the south of the Wagon Pass Deposit.
Mineral Resource Estimate (MRE)
The most recent JORC 2012 Inferred MRE of 750Kt at 5.8% Zn, 7.2% Pb, 54g/t Ag (13.6% ZnEq) at Wagon Pass was completed by Cube Consulting in 2016, using a 5% Zn + Pb cut off, 2m downhole compositing, and an assumed bulk density of both waste and mineralized material of 3.0 g/cm[3] . The deposit is located between 150-200m depth below surface. The mineralisation wireframe is shown in Figure 2.
Key parameters of the MRE, summarised in accordance with the requirements of ASX LR 5.8.1:
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Geology and geological interpretation:
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The Wagon Pass mineralisation is hosted in the dolomitised Lower Napier Formation. Lithologies consist of red and green/grey stylo-nodular silty packstones and wackestones with interbedded cleaner, and commonly brecciated, more massive micrites/wackestones.
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The mineralisation occurs as a north-trending lens c. 150-200 m below surface, shallowly dipping to the west and plunging to the north. The main massive sulphide mineralisation is largely stratiform in nature (parallel to rock layering).
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A nominal 2% Zn and /or Pb cutoff was used to guide interpretation of the mineralisation envelope
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Drilling techniques:
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Diamond drill cores were sampled as either ¼ or ½ core splits on 1m intervals within the mineralisation, or core fillets (smaller portion of sample than ¼ or ½ core splits) on 2m intervals within the waste intervals.
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Drilling techniques: 49 diamond drill holes (46 vertical) - primarily NQ and BQ within the mineralised intervals. See Figure 4, showing core storage facility.
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Classification Criteria:
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The entire estimate was classified as Inferred.
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The drill spacing ranges from 40m x 40m up to 50m x 100m for the drilling material to the MRE.
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Data was composited to 2m composites along each drill hole intersection within interpreted the mineralisation envelope
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Despite the well understood geological setting and geological control on mineralisation, there was insufficient QAQC information to verify the accuracy of sampling and assaying, and it was only possible to classify the entire estimate as Inferred Mineral Resources.
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Sample analysis method:
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Atomic absorption spectrometry (AAS) following perchloric acid digest for the majority of samples
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Estimation methodology:
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3
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Estimation employed 2m downhole composites and ordinary kriging (OK). The 250 x 250 x 50 m search ellipse was oriented to the mineralisation envelope geometry, a minimum of 4 and maximum of 10 samples were used.
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Cut-off grade and basis:
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A nominal 2% Zn and /or Pb cutoff was used to guide interpretation of the mineralisation envelope, the estimate was reported above a Zn+Pb cutoff of 5% as a reliable predictor of massive sulphide mineralisation.
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Mining, metallurgical and consideration of other material modifying factors to date:
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Underground mining was considered to be the most applicable method of extraction, given the historical practice in the area.
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Metallurgical tests have yet to be completed, and parameters were assumed to be similar to historical Lennard Shelf operations.
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No assumptions were made in relation to environmental and other considerations at this early stage of the project.
Figure 2: 3D model of the Wagon Pass mineralisation at a 1% Zn cut-off.
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( source: Metalicity)
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Note: North indicated by the green arrow. The model is colour-coded by elevation from low (blue) to high (red).
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Exploration Target Range (ETR)
Metalicity have reviewed a comprehensive targeting study completed in late 2016 over the project area completed by Meridian Minerals, and have adopted this work as the basis for Metalicity’s exploration programme in the Napier Range area.
To date, the area has been underexplored due to ineffective and shallow drilling. There are nine targets, one for resource extensions to the Wagon Pass deposit and eight further targets within 4km of the deposit. At Wagon Pass, potential exists to extend the resource down dip to the west of the deposit (Exploration Target 1), while regionally the Company is targeting multiple occurrences of 0.5–1Mt size (Exploration Target 2), resulting in a global ETR at Napier Range in the order of 1–4 Mt @ 10–15% ZnEq.
The grade and tonnage range are based on the grade and geometry of the Wagon Pass deposit, and the clusterstyle distribution of this mineralisation type.
The Exploration Target Ranges (ETR) stated are conceptual in nature, and the potential quantities and grades are conceptual in nature. There has been insufficient exploration to estimate Mineral Resource Estimates outside that known at Wagon Pass, and it is uncertain whether further exploration will result in the estimation of additional Mineral Resources.
Exploration Target 1 (resource extensions to the Wagon Pass deposit)
The Wagon Pass mineralisation is still open to the west. Two proposed holes are designed to test the N1 target area for a potential western and north-western extension of the mineralisation. The holes are vertical and designed to test the Lower Napier Dunr5 and 4 units hosting most of the Wagon Pass mineralisation. Based on the existing drilling data, modelled geometry and geological continuity of the MRE, the Exploration Target is anticipated to have a range of between approximately 100-200kt at 10-15% ZnEq.
Exploration Target 2
The remaining eight targets are located further south, and along strike of the Wagon Pass deposit, mostly in analogous litho-stratigraphic settings within favourable Lower Napier stratigraphy. Metalicity believe that the area is significantly under-explored for additional deposits 0.5 to 1 Mt size, Figure 3 shows these eight areas (outlined in magenta).
These targets were selected based on having similarities with the existing Wagon Pass deposit in terms of interpreted stratigraphic position, overall geological setting, geophysical character, and proximity to exploration drilling and rock ship sampling results.
The “footprint” of the existing Wagon Pass Mineral Resource of 750 kt guided the anticipated range in size of the targeted mineralisation, of between around 0.5–1 Mt per target. The same rationale was applied to the anticipated targeted range of grade, based on the Wagon Pass grade of 13.6% ZnEq[1] , to derive a target grade range of 10-15% ZnEq. Finally, given that not all Exploration Targets are successfully converted into Mineral Resources of any category, a success rate of 50% was assumed for the eventual conversion of the eight targets to Mineral Resources.
The eight target areas comprising Exploration Targets 2 to 9 collectively amount to an Exploration Target range of between 1–4 Mt, with anticipated grades ranging between 10-15 % ZnEq.
The Company reiterates that the Exploration Target Ranges (ETR) stated are conceptual in nature, and the potential quantities and grades are conceptual in nature. There has been insufficient exploration to estimate Mineral Resource Estimates outside that known at Wagon Pass, and it is uncertain whether further exploration will result in the estimation of additional Mineral Resources.
1 Inferred MRE of 750Kt at 5.8% Zn, 7.2% Pb, 54g/t Ag
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For both Target 1 and Target 2, the Company proposes drill testing as the most effective way to validate the ETR. Proposed collar locations and the target areas are presented in Figure 3. The timeframe within which this drilling is expected to be completed is over the next 18 months.
Figure 3: Exploration Target areas, existing and proposed drilling, and major gossan locations at Napier Range.
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Carpentaria Gossan
Chedda Cliffs Gossan
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Source: Metalicity
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Metal Equivalence
Zinc equivalent (ZnEq) calculation parameters are presented in Table 1. The metallurgical recoveries are extrapolated from orebodies with similar MVT characteristics. It is Metalicity’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(%) + 0.92Pb(%) + 0.02Ag(ppm).
Table 1: Zinc Equivalence parameters
| Metal | |||
| Factor | Zn | Pb | Ag |
| Total recovery | 93% 85% $1.24/lb |
95% 95% $1.00/lb |
90% 95% $16.5/oz. |
| Total Payable | |||
| Price(spot) | |||
| Conversion Factor | 1.00 | 0.92 | 0.021 |
1 Approximating to head grade
Metal equivalents are highly dependent on the metal prices used to derive the equivalence formula. Metalicity notes that the metal equivalence method taken above is a simplified approach. Only estimated metallurgical recoveries are available. The metal prices are assumed indicative LME prices and do not necessary reflect the metal prices that a smelter would pay for concentrate nor are any smelter penalties or charges included in the calculation.
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ENQUIRIES
| Investors Matt Gauci Managing Director +61 8 9324 1053 [email protected] |
Australian Investor Relations David Tasker Chapter One Advisors +61 433 112 936 [email protected] |
Canadian Investor Relations Spyros P. Karellas Pinnacle Capital Markets +1(416)433-5696 [email protected] |
|---|---|---|
About Metalicity Limited
Metalicity Limited is an Australian mining exploration company with a primary focus on base metals sector and the development of the world class Admiral Bay Zinc Project, located in the north west of Australia. The company is currently undertaking a Pre-Feasibility study on Admiral Bay. The Company’s secondary focus is the rare metals sector where early stage exploration has commenced. The Company is supported by a management team with 300+ years collective experience in the resources sector and strong shareholder base of institutional and sophisticated investors.
Competent Person Statement – Exploration Results and Exploration Target Range
Information in this report that relates to Exploration results and Exploration Target Range (ETR) has been reviewed by Dr. Simon Dorling, who is a member of the Australian Institute of Geoscientists. Dr. Dorling is a consultant to Metalicity Ltd, and has sufficient experience relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined by the 2012 Edition of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves. Dr. Dorling consents to the inclusion of the data in the form and context in which it appears.
Competent Person Statement – Wagon Pass Mineral Resource Estimate
Information in this report that relates to the Wagon Pass Inferred Resource Estimate has been compiled by Patrick Adams, FAusIMM, MAIG. Mr Adams is a Director of Cube Consulting, and consultant to Meridian Minerals Pty Ltd who commissioned the resource report in 2016, and has sufficient experience relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined by the 2012 Edition of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves. Mr Adams consents to the inclusion of the data in the form and context in which it appears.
Further Information
For further information on Due Diligence, Tenement Sale Agreement terms, Glencore and Teck Option terms, see ASX:MCT 30/10/17.
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JORC Code, 2012 Edition – Table 1 report template relating to the Wagon Pass Mineral Resource Estimate.
(Criteria in this section apply to all succeeding sections.)
| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| Sampling | • | Nature and quality of sampling (eg cut channels, random chips, or specific specialised | • | All holes used in the 2016 MRE update were diamond drillholes, drilled between |
| techniques | industry standard measurement tools appropriate to the minerals under investigation, | 1980 and 2007 by several companies. | ||
| such as down hole gamma sondes, or handheld XRF instruments, etc). These | • | Diamond drilled holes were sampled as either ¼ or ½ core splits on 1m intervals | ||
| examples should not be taken as limiting the broad meaning of sampling. | within the mineralisation, or core fillets on 2m intervals within the waste intervals. | |||
| • | Include reference to measures taken to ensure sample representivity and the | • | Shell Company of Australia – NQ & BQ core | |
| appropriate calibration of any measurement tools or systems used. | • | Western Metals – HQ collars, NQ to EOH | ||
| • | Aspects of the determination of mineralisation that are Material to the Public Report. | • | CBH – not specified | |
| • | In cases where ‘industry standard’ work has been done this would be relatively simple | • | No further measures were taken to ensure sample representivity | |
| (eg ‘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 (eg submarine nodules) may | ||||
| warrant disclosure of detailed information. | ||||
| Drilling | • | Drill type (eg core, reverse circulation, open-hole hammer, rotary air blast, auger, | • | Diamond drilling was used for all holes in the 2016 MRE update. |
| techniques | Bangka, sonic, etc) and details (eg core diameter, triple or standard tube, depth of | • | A mixture of NQ, BQ and HQ sizes – primarily NQ and BQ within the mineralised | |
| diamond tails, face-sampling bit or other type, whether core is oriented and if so, by | intervals | |||
| what method, etc). | • | There is no evidence that the diamond core was oriented. Most (46 of 49) holes | ||
| were drilledvertically. | ||||
| Drill sample | • | Method of recording and assessing core and chip sample recoveries and results | • | There is no evidence of core recoveries in the data, besides passing mention in |
| recovery | assessed. | one log (Western Metals, 1998). | ||
| • | Measures taken to maximise sample recovery and ensure representative nature of the | • | Measures taken to maximize sample recovery and ensure representative nature | |
| samples. | of the samples are not known. | |||
| • | Whether a relationship exists between sample recovery and grade and whether sample | • |
No analysis on relationship between sample core recovery and grade has been | |
| bias may have occurred due to preferential loss/gainof fine/coarse material. | undertaken. | |||
| Logging | • | Whether core and chip samples have been geologically and geotechnically logged to a | • | Diamond core was geologically logged to lithological contacts or changes in the |
| level of detail to support appropriate Mineral Resource estimation, mining studies and | nature of mineralisation. | |||
| metallurgical studies. | • | Diamond core and RC chips have been geologically logged to a level of detail to | ||
| • | Whether logging is qualitative or quantitative in nature. Core (or costean, channel, etc) | support appropriate Mineral Resource estimation. | ||
| photography. | • | There is some core photography available for selected intervals of seven holes, | ||
| • | The total length and percentage of the relevant intersections logged. | NRD023, 028, 035, 045, 052, 131 and 134.. | ||
| • | Total length of all logged data is 38,005m of which 14,618m have been used in | |||
| the estimate. | ||||
| • | Logging has been conducted both qualitatively and quantitatively – full | |||
| description of lithologies, alteration and comments are noted, as well as | ||||
| percentage estimates on alteration, veining and sulphide amount. | ||||
| • | The total amount of relevant data used in the estimate is 14,618m (diamond, | |||
| data), of which 100% was logged. |
Metalicity Limited www.metalicity.com.au ASX Code: MCT 6 Outram Street ABN: 92 086 839 992 West Perth WA 6005
| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| Sub-sampling | • | If core, whether cut or sawn and whether quarter, half or all core taken. | • | Diamond Core was ¼, ½ cut or fillet sampled. A minimum of 1m and a maximum |
| techniques and | • | If non-core, whether riffled, tube sampled, rotary split, and whether sampled wet or dry. | of 2m was sampled. | |
| sample | • | For all sample types, nature, quality and appropriateness of sample prep. technique. | • | Sample prep method is not recorded for this historical data. |
| preparation | • | Quality control procedures adopted for all sub-sampling stages to maximise | • | One hole from CBH drilled in 2007 reports details around sample prep |
| representivity of samples. | (CNRDD008). Samples were ground to -200# and treated with a four acid digest | |||
| • | Measures taken to ensure that the sampling is representative of the in situ material | before analysis. | ||
| collected, including for instance results for field duplicate/second-half sampling. | • | Drilling conducted in 1987/88 records duplicates every 50m downhole. | ||
| • | Whether sample sizes are appropriate to the grain size of the material being sampled. | • | There is no record of quality control procedures. | |
| • | There is no known relationship between sample recovery and grade and with | |||
| core, samplerecoveryisrecorded asveryhigh | ||||
| Quality of assay | • | The nature, quality and appropriateness of the assaying and laboratory procedures | • | Assay laboratories in Perth were used for assaying. |
| data and | used and whether the technique is considered partial or total. | • | Original scanned laboratory records or Annual Report listings were checked | |
| laboratory tests | • | For geophysical tools, spectrometers, handheld XRF instruments, etc, the parameters | against database records for all significant intersections | |
| used in determining the analysis including instrument make and model, reading times, | • | Half split core samples were analysed for Cu, Pb and Zn and occasionally Ag. | ||
| calibrations factors applied and their derivation, etc. | • | Base metal analysis was noted as AAS following perchloric acid digest for the | ||
| • | Nature of quality control procedures adopted (eg standards, blanks, duplicates, | majority of samples (Amdel codes C1 and C2). | ||
| external laboratory checks) and whether acceptable levels of accuracy (ie lack of bias) | • | One hole from CBH drilled in 2007 reports details around sample prep | ||
| and precision have been established. | (CNRDD008). Samples were ground to -200# and treated with a four acid digest | |||
| before analysis. | ||||
| • | Descriptions of quality control procedures are based on previous resource | |||
| reports and historical documents. The absence of original laboratory quality | ||||
| control records has meant that results of quality control analyses could not be | ||||
| checked and verified. | ||||
| • | QAQC consisted of submission of field duplicates for drilling in 1987-88. | |||
| • | Historical records do not record the use of an umpire laboratory. | |||
| Verification of | • | The verification of significant intersections by either independent or alternative | • | No independent sampling has been undertaken by Cube. |
| sampling and | company personnel. | • | Drillhole assay data has been checked against the original hardcopy logs and | |
| assaying | • | The use of twinned holes. | laboratory assay reports. | |
| • • |
Documentation of primary data, data entry procedures, data verification, data storage (physical and electronic) protocols. Discuss any adjustment to assay data. |
• • |
No twinning of holes has been identified in the drillhole data. Data entry and verification was completed by the various companies undertaking exploration at Wagon Pass and described in historical documents relating to the |
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| corresponding periods of operation. | ||||
| • | Samplesnotreceived or missinghavehad theinterval left blank inthe database. | |||
| Location of data | • | Accuracy and quality of surveys used to locate drill holes (collar and down-hole | • | Historical records do not describe the collar survey method. |
| points | surveys), trenches, mine workings and other locations used in Mineral Resource | • | Historical records to not describe the downhole survey method except in the | |
| estimation. | 2007 CBH drilling where this is recorded as single shot downhole. The 1998 | |||
| • | Specification of the grid system used. | Western Metals holes had a number of downhole surveys recorded on the | ||
| • | Quality and adequacy of topographic control. | original logs which have been incorporated into the database but there is no data | ||
| around method of collection. | ||||
| • | The supplied database contained a significant number of erroneous down hole | |||
| survey entries. Cube have corrected all down hole surveys to documented | ||||
| planned or log recorded surveys available in the Annual Reports. | ||||
| • | The drilling grid system has been setupon a local minegrid co-ordinates. The |
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| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| supplied data base contained MGA 94 (Zone 51) co-ordinates only and grid | ||||
| transformation conversion data from Local Mine Grid to MGA was not located in | ||||
| the data set. | ||||
| • | No Topography survey (or surface) was available; the mineralisation at Wagon | |||
| Pass is an underground target located approximately 150m below the surface. | ||||
| The absence of a topographical surface is not considered material to the MRE. | ||||
| • | Visual inspection in 3D graphics and comparison to paper plans in the Annual | |||
| reports did not identify any significant inaccuracies with the spatial position of the | ||||
| drillholes. | ||||
| Data spacing and | • |
Data spacing for reporting of Exploration Results. | • | The local drilling grid is rotated approximately 20° East of North in the MGA 94 |
| distribution | • | Whether the data spacing and distribution is sufficient to establish the degree of | coordinate system. Drill data spacing is variable, ranging from 40m x 40m up to | |
| geological and grade continuity appropriate for the Mineral Resource and Ore Reserve | 50m x 100m for the majority of diamond drilling relating to the MRE. This spacing | |||
| estimation procedure(s) and classifications applied. | is adequate to determine the geological and grade continuity for classifying and | |||
| • | Whether sample compositing has been applied. | reporting of Mineral Resources. | ||
| • | 2mdownhole compositeswere usedforthe estimation. | |||
| Orientation of | • | Whether the orientation of sampling achieves unbiased sampling of possible structures | • | Drilling is orientated normal to the dip and plunge of the mineralisation. The |
| data in relation to | and the extent to which this is known, considering the deposit type. | majority of the holes were vertical, designed to intersect a mostly horizontal | ||
| geological | • | If the relationship between the drilling orientation and the orientation of key mineralised | mineralised zone. | |
| structure | structures is considered to have introduced a sampling bias, this should be assessed | • | In most instances a representative sample across the mineralisation was | |
| and reported if material. | obtained. | |||
| Sample security | • | The measures taken to ensure sample security. | • | No active drilling or sampling work is taking place. Routine sampling, submission |
| and storage procedures are described in historical reports. There is no specific | ||||
| reference to sample security. | ||||
| Audits or reviews | • | The results of any audits or reviews of sampling techniques and data. | • | Cube conducted a data compilation review and validation prior to resource |
| estimation which involved checks for duplicate surveys, downhole surveys errors, | ||||
| assays and geological intervals beyond drillhole total depths, overlapping | ||||
| intervals, and gaps between intervals. Cube also reviewed all existing assay logs | ||||
| and checked these against the database entries. |
Section 2 – Reporting of Exploration Results
| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| Mineral tenement | • |
Type, reference name/number, location and ownership including agreements or | • | The Wagon Pass deposit is part of the Napier Range Project area, located |
| and land tenure | material issues with third parties such as joint ventures, partnerships, overriding | 108km east of Derby WA, at Lat -17.17425, Long 124.633202 in the West | ||
| status | royalties, native title interests, historical sites, wilderness or national park and | Kimberly Mineral Field. | ||
| environmental settings. | • | The Drilling used in this MRE update has been completed by several companies | ||
| • | The security of the tenure held at the time of reporting along with any known | during the 1980s, 1990s and during 2007 within historical mining and exploration | ||
| impediments to obtaining a licence to operate in the area. | tenements. | |||
| • | The Wagon Pass Deposit is currently located within Mineral Tenement 04/00161 | |||
| listed as Active, held by Meridian Minerals Pty Ltd. The project is wholly owned | ||||
| byMeridian Minerals (Lennard Shelf Project)PtyLtd. |
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| Criteria | JORC Code explanation | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|---|
| Exploration done | • | Acknowledgment and appraisal of exploration by other parties. | • | All exploration has been completed by previous operators. This includes Shell | |
| by other parties | Australia, Billiton (as a Shell Australia subsidiary) Western Metals and CBH. | ||||
| • | The historical data and database has been appraised and is of reasonable | ||||
| quality. | |||||
| Geology | • | Deposit type, geological setting and style of mineralisation. | • | The project area is situated on the Lennard Shelf which forms a NW-trending belt | |
| between the Proterozoic Kimberley block and the Fitzroy Trough, the deepest | |||||
| part of the Canning Basin. During the late Devonian, a carbonate platform/reef | |||||
| complex developed along the length of the Lennard Shelf, during a period of | |||||
| active tectonism and rapid subsidence in the Fitzroy Trough. | |||||
| • | Detailed mapping and drilling at Wagon Pass led to the definition of a detailed | ||||
| stratigraphy, outlined by Buchhorn and Sceney (1984) and revised by Clifford | |||||
| (1988). The Van Emmerick Conglomerate was considered to be the basal unit on | |||||
| Proterozoic basement, ranging from coarse clastic conglomerates to variably | |||||
| dolomitic conglomerates and feldspathic sandstones. This is overlain by, or | |||||
| interfingers with, Pillara Cycle Lower Napier Formation which was subdivided into | |||||
| five units. This formation is characterised by impure reddish sandy and silty | |||||
| dolomites with breccia beds and shaly units. The basal intraclastic unit with | |||||
| Pillara reef fragments was considered to correlate with the Sadler Formation in | |||||
| the SE Lennard Shelf and the remainder of the formation were considered to be | |||||
| Virgin Hills Formation correlatives. In particular, a stromatolitic unit and overlying | |||||
| red stylobedded pelloidal packstone at the top of the formation show strong | |||||
| similarities with the Virgin Hills. Dolomitisation is variable in the formation. | |||||
| • | Mineralization at Wagon Pass is apparently stratabound in the upper part of the | ||||
| Lower Napier Formation, occurring in silty dolomites and breccias with green | |||||
| chlorite and clays, probably reflecting hydrothermal alteration of detrital biotite in | |||||
| the host rock. Sphalerite and galena textures vary from finely disseminated and | |||||
| semi-massive stratiform, through irregular colloform dissolution/open-space fill to | |||||
| minor late vein and fracture fill. Zn and Pb are present in approximately equal | |||||
| amounts, with c. 0.5% Cu and 30-60g/t Ag. | |||||
| • | The Wagon Pass area is cut by a series of north-south and east-west trending | ||||
| valleys described by Playford in “Devenian Reef Complexes of the Canning | |||||
| Basin” as subglacial channels, thought to be controlled by a series of regional | |||||
| fractures or faults. The Wagon Pass resource is bounded to the south by an E-W | |||||
| structure and is elongated along a N-S trend, suggesting possible structural | |||||
| controls. | |||||
| Drill hole | • | A | summary of all information material to the understanding of the exploration results | • | No exploration has been reported in this release, therefore no drill hole |
| Information | including a tabulation of the following information for all Material drill holes: | information to report. This section is not relevant to this report on Mineral | |||
o |
easting and northing of the drill hole collar | Resources and Ore Reserves. | |||
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 |
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12
| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| _Competent Person should clearly explain why this is the case. _ | ||||
| Data aggregation | • |
In reporting Exploration Results, weighting averaging techniques, maximum and/or | • | No exploration has been reported in this release, therefore no drill hole |
| methods | minimum grade truncations (eg cutting of high grades) and cut-off grades are usually | information to report. This section is not relevant to this report on Mineral | ||
| Material and should be stated. | Resources and Ore Reserves. | |||
| • | 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. _ | ||||
| Relationship | • | These relationships are particularly important in the reporting of Exploration Results. | • | No exploration has been reported in this release, therefore no drill hole |
| between | • | If the geometry of the mineralisation with respect to the drill hole angle is known, its | information to report. This section is not relevant to this report on Mineral | |
| mineralisation | nature should be reported. | Resources and Ore Reserves. | ||
| widths and | • | If it is not known and only the down hole lengths are reported, there should be a clear | ||
| intercept lengths | 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 | • | No exploration has been reported in this release, therefore no drill hole |
| included for any significant discovery being reported. These should include, but not be | information to report. This section is not relevant to this report on Mineral | |||
| _limited to a plan view of drill hole collar locations and appropriate sectional views. _ | Resources and OreReserves. | |||
| Balanced | • | Where comprehensive reporting of all Exploration Results is not practicable, | • | No exploration has been reported in this release, therefore no drill hole |
| reporting | representative reporting of both low and high grades and/or widths should be practiced | information to report. This section is not relevant to this report on Mineral | ||
| _to avoid misleading reporting of Exploration Results. _ | Resources and OreReserves. | |||
| Other substantive | • |
Other exploration data, if meaningful and material, should be reported including (but not | • |
No exploration has been reported in this release, therefore no drill hole |
| exploration data | limited to): geological observations; geophysical survey results; geochemical survey | information to report. This section is not relevant to this report on Mineral | ||
| results; bulk samples – size and method of treatment; metallurgical test results; bulk | Resources and Ore Reserves. | |||
| density, groundwater, geotechnical and rock characteristics; potential deleterious or | ||||
| contaminating substances. |
Section 3 – Estimation and Reporting of Mineral Resources
| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| Database | • | Measures taken to ensure that data has not been corrupted by, for example, | • | Cube completed validation checks on the database including maximum hole |
| integrity | transcription or keying errors, between its initial collection and its use for Mineral | depths checks between tables and the collar data; downhole survey validation | ||
| Resource estimation purposes. | from paper sources and assay data validation form paper sources for all | |||
| • | Data validation procedures used | mineralised intervals. | ||
| • | Cube has re-set all down hole surveys to documented planned directions or | |||
| where available,documented down hole surveys. | ||||
| Site visits | • | Comment on any site visits undertaken by the Competent Person and the outcome of | • The Competent Person did not conduct a site visit as there is no current |
|
| those visits. | activity on site. This MRE is based completely on historic drilling data. | |||
| • | If no site visits have been undertaken indicate why this is the case. |
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13
| Geological | • | Confidence in (or conversely, the uncertainty of ) the geological interpretation of the | • | The geological interpretation is well understood and confidence in the current | |
|---|---|---|---|---|---|
| interpretation | mineral deposit. | interpretation is considered high. | |||
| • | Nature of the data used and of any assumptions made. | • | The mineralised domain has been defined using a plus 2% Zn and/or plus 2% Pb | ||
| • | The effect, if any, of alternative interpretations on Mineral Resource estimation. | assay result which is considered a strong indication of the presence of massive | |||
| • | The use of geology in guiding and controlling Mineral Resource estimation. | sulphide mineralisation. | |||
| • | The factors affecting continuity both of grade and geology type, geological setting and | • | Mineralised drill intervals have been included where the individual Zn% grade | ||
| style of mineralisation. | exceeds 2% or where the Pb% grade exceeds 2%. | ||||
| • | The resultant lode is a gently undulating stratabound lode, striking at azimuth 030° | ||||
| and dipping -25 to the west. Given the data spacing the confidence in the volume | |||||
| of the mineralised zone is considered moderate. | |||||
| • | The primary assumption is one of lode continuity between drill data. Alternative | ||||
| interpretations, such as less continuous mineralisation are possible and would | |||||
| have a material impact on the mineralised volume. | |||||
| • | Geological logging of the mineralised unit has been used in conjunction with assay | ||||
| data toguide the lode interpretation. | |||||
| Dimensions | • | The extent and variability of the Mineral Resource expressed as length (along strike or | • The Mineral Resource is located approximately 150m below the |
||
| otherwise), plan width, and depth below surface to the upper and lower limits of the | topographic surface, the strike extend is 400m N-S with a plan projected width of | ||||
| Mineral Resource. | 150m. The mineralised lode is gently undulating, dipping -25 to the west. The | ||||
| average mineralised drill intercept thickness is 12m with a maximum of 40m and a | |||||
| minimum of 2m. | |||||
| Estimation | and | • | The nature and appropriateness of the estimation technique(s) applied and key | • | Down hole best fit composites were generated for the mineralised lode, using an |
| modelling | assumptions, including treatment of extreme grade values, domaining, interpolation | intercept zone code table in the database to control compositing. The composite | |||
| techniques | parameters and maximum distance of extrapolation from data points. If a computer | data for each element was reviewed and high grade cuts have been applied to | |||
| assisted estimation method was chosen include a description of computer software and | some elements. | ||||
| parameters used. | • | The estimation methodology used was Ordinary Kriging, using individual | |||
| • | The availability of check estimates, previous estimates and/or mine production records | variogram models for each element estimated. | |||
| and whether the Mineral Resource estimate takes appropriate account of such data. | • | A single standardised search radius of 250m was used with a minimum and | |||
| • | The assumptions made regarding recovery of by-products. | maximum number of samples of 4 and 10 respectively. | |||
| • | Estimation of deleterious elements or other non-grade variables of economic | • | The search has been rotated to 030° dipping -25 to the west and used a 250m | ||
| significance (eg sulphur for acid mine drainage characterisation). | semi-major and 50m minor axis radius. | ||||
| • | In the case of block model interpolation, the block size in relation to the average sample | • | No by-product recoveries were considered. | ||
| spacing and the search employed. | • | Estimations of any deleterious elements were not completed for the Mineral | |||
| • | Any assumptions behind modelling of selective mining units. | Resource. | |||
| Criteria | JORC Code explanation | Commentary |
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14
| • | Any assumptions about correlation between variables. | • | Block size used is 25mN, 25m E and 2m RL and sub-blocked to 12.5mN 12.5mE | ||
|---|---|---|---|---|---|
| • | Description of how the geological interpretation was used to control the resource | x1mRL. | |||
| estimates. | • | The bulk of the drilling data was on 40m x 40m spaced sections. | |||
| Discussion of basis for using or not using grade cutting or capping. | • | No assumptions of selective mining units were made. | |||
| • | The process of validation, the checking process used, the comparison of model data to | • | The estimate is a global estimate. | ||
| drill hole data, and use of reconciliation data if available. | • | There is a moderate correlation between Zn and Pb. | |||
| • | The mineralised domain acted as a hard boundary to control the Mineral Resource | ||||
| estimate. | |||||
| • | To limit the effects of extreme grades, top cuts of 25% Zn and 200g/t Ag were | ||||
| applied. Pb and Fe composite data were not top cut for estimation. | |||||
| • | Block model validation was undertaken using the comparison of block model | ||||
| estimate to drill hole data composites. Validation also comprised visual checking in | |||||
| 3D, global statistical comparisons of input and block grades, and local grade (by | |||||
| northing)relationship plots. | |||||
| Moisture | • | Whether the tonnages are estimated on a dry basis or with natural moisture, and the | • | Moisture was not considered in the density assignment. The mineralisation | |
| method of determination of the moisture content. | modelled in this resource estimate occurs entirely within the fresh or sulphide zone | ||||
| and is estimated as drytonnes. | |||||
| Cut-off parameters | • | The basis of the adopted cut-off grade(s) or quality parameters. | • | The mineral resource has been reported above a Zn+Pb% cut off of 5%. This cut | |
| off represents a solid predictor of massive sulphide mineralisation given the | |||||
| reasonablyequal values of Zn and Pb currently. | |||||
| Mining factors | or | • | Assumptions made regarding possible mining methods, minimum mining dimensions | • | The assumed mining method was some form of underground mining based on |
| assumptions | 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 mining assumptions made. |
• | the experience of nearby historic mining on the Lennard Shelf; however, no mining factors were considered during the interpretation and 3D modelling of the mineralisation. Minimum mining widths were not considered during the interpretation and 3D modelling of the mineralisation as this update of the Wagon Pass was a global estimate. |
||
| Metallurgical | • | The basis for assumptions or predictions regarding metallurgical amenability. It is always | • | No metallurgical factors were considered during the interpretation and 3D | |
| factors | or | necessary as part of the process of determining reasonable prospects for eventual | modelling of the mineralisation. | ||
| assumptions | 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. |
• • |
There are no available metallurgical studies specific to the Wagon Pass sulphide mineralisation. Assumptions regarding metallurgical treatment processes and parameters are based on the nearby Lennard Shelf historic operations. |
||
| Environmental | • | Assumptions made regarding possible waste and process residue disposal options. It is | • | No assumptions were made regarding environmental restrictions. | |
| factors | or | always necessary as part of the process of determining reasonable prospects for eventual | |||
| assumptions | economic extraction to 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. |
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15
| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary | |
|---|---|---|---|---|---|
| Bulk density | • | Whether assumed or determined. If assumed, the basis for the assumptions. If | • | There are no density measurements included in the original data although there | |
| determined, the method used, whether wet or dry, the frequency of the measurements, | is a table of Napier Range rock densities available in a 2007 CSA report. | ||||
| the nature, size and representativeness of the samples. | • | Density was assigned to the model as 3.00 g/cm3. While not a measured data, | |||
| • | The bulk density for bulk material must have been measured by methods that adequately | this assigned bulk density is considered in line with similar massive sulphide | |||
| account for void spaces (vugs, porosity, etc), moisture and differences between rock and | material generally. | ||||
| alteration zones within the deposit. | • | There were no considerations made for bulk density based on weathering | |||
| • | Discuss assumptions for bulk density estimates used in the evaluation process of the | profiles as the mineralised domain interpreted for this resource estimate lies | |||
| different materials. | entirely within the primary or fresh sulphide zone. | ||||
| • | There has been no variation of the bulk density for sulphide concentration as no | ||||
| data exists for the Wagon Pass core. | |||||
| Classification | • | The basis for the classification of the Mineral Resources into varying confidence | • | The Wagon Pass MRE reported above a 5% (Zn+Pb) cut-off has been classified | |
| categories. | entirely as Inferred Mineral Resources which indicates a moderately low | ||||
| • | Whether appropriate account has been taken of all relevant factors (ie relative | confidence in the reported tonnes and grade. In particular, there is an | |||
| confidence in tonnage/grade estimations, reliability of input data, confidence in continuity | expectation that additional information will vary the global estimate materially, | ||||
| of geology and metal values, quality, quantity and distribution of the data). | both up or down. | ||||
| • | Whether the result appropriately reflects the Competent Person’s view of the deposit | • | This classification is based on the following: | ||
| • | The drill hole data is from historic drilling campaigns and has no documented | ||||
| QA/QC data from which to determine the accuracy, precision or representivity of | |||||
| the sampling and assaying. | |||||
| • | Documentation of the sample preparation and determination methodologies is | ||||
| inadequate to establish the appropriateness of the methods. | |||||
| • | The collar locations and down hole deviations of the drill holes has not been | ||||
| established with modern systematic techniques. | |||||
| • | The data has been gathered by respected suitably funded companies and the | ||||
| geological planning logging undertaken by suitably qualified geologists. The | |||||
| drilling for the most part has been undertaken by established drilling contractors | |||||
| using adequate drill equipment and the assaying undertaken by Industry | |||||
| Standard Laboratories of the time. | |||||
| • | The geological setting is well understood and geological controls on the | ||||
| mineralisation is of medium confidence given the drill data density. There is | |||||
| however a reasonable expectation that infill and extensional drilling will change | |||||
| the volume of the Wagon Pass mineralised lode. | |||||
| • | The bulk density for the mineralisation is assumed and constant. | ||||
| • | The Mineral Resource Estimate appropriately reflects the Competent Person’s | ||||
| view of the deposit. | |||||
| Audits or reviews | • | The results of any audits or reviews of Mineral Resource estimates | • | The interpreted mineralization wireframe has been peer reviewed by other | |
| qualifiedprofessionals in Cube | |||||
| Discussion | of | • | Where appropriate a statement of the relative accuracy and confidence level in the Mineral | • | No specific test of accuracy of this estimate have been undertaken. |
| relative accuracy/ | Resource estimate using an approach or procedure deemed appropriate by the | • | The estimate is a global estimation by Ordinary Kriging within a geologically and | ||
| confidence | Competent Person. For example, the application of statistical or geostatistical procedures | grade defined 3D wireframe. | |||
| to quantify the relative accuracy of the resource within stated confidence limits, or, if such | • | The updated MRE has been compared to the previous estimate. The previous | |||
| an approach is not deemed appropriate, aqualitative discussion of the | estimate byWestern Metals(McCracken 1999)reported 590kt at 8.5% Zn, 8% |
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16
| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| factors that could affect the relative accuracy and confidence of the estimate. | Pb and 75g/t Ag above a 5% Zn equivalent (Zn%+Pb%/1.8+Ag g/t/120). | |||
| • | The statement should specify whether it relates to global or local estimates, and, if local, | • | The updated MRE for Wagon Pass as reported is in accordance with the JORC | |
| state the relevant tonnages, which should be relevant to technical and economic | 2012 as 750kt at 5.8% Zn, 7.2% Pb and 54g/t Ag. | |||
| evaluation. Documentation should include assumptions made and the procedures used. | • | The two estimates are significantly different in methodology with the 1999 | ||
| • | These statements of relative accuracy and confidence of the estimate should be | estimate based on sectional areas and average sectional grades and this update | ||
| compared with production data, where available. | based on 3D wireframe interpretation and 3D geostatistical estimation | |||
| techniques. | ||||
| • | However, the contained metal estimates for the two models are within | |||
| reasonable tolerances globally (the 2016 MRE is -15% Zn metal; +14% Pb metal | ||||
| and -9% Agounces),lendingsome confidence to theglobal estimated metal. |
References:
CSA Global, 2016, Exploration Targeting at Napier Range, Report R115.2017.
Cube Resources 2016, Mineral Resource Estimate, Wagon Pass Deposit Lennard Shelf. Technical Report November 2016 Prepared for Meridian Minerals Pty Limited.
Buchhorn, I. And Sceney, P., 1984. Napier Range Joint Venture Annual Report EL 04/2, 04/22 for 1983. Shell Company of Australia Report 08.2237.NB01.
Clifford, M., 1988. Napier Range Joint Venture, Annual Report for 1988 - ML’s 04/161 and 04/162. Billiton Report 8.4233.
Playford, P.E., 1984. Platform-margin and marginal slope relationships in the Devonian Reef complexes of the Canning Basin. In: P.G. Purcell (Ed.); The Canning Basin, W.A. GSA/PESA Symposium, Perth. p191-214.
McCracken, S.. 1999, Napier Range Project, Annual Report for the period 01/01/1998 to 31/12/1998, M04/161-162. A57751
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17