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IGO LIMITED — Capital/Financing Update 2022
Sep 19, 2022
65111_rns_2022-09-19_0f3301f8-dc0f-4e53-8506-3aa1f9133175.pdf
Capital/Financing Update
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ASX / MEDIA RELEASE
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20 September 2022
SIGNIFICANT EXPANSION OF LITHIUM POTENTIAL AT MT ALEXANDER
HIGHLIGHTS
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Increasing number of pegmatite outcrops identified by field mapping across the 15km zone of pegmatite dykes at Mt Alexander
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A further 119 rock chip samples from prospective pegmatites have been collected from two Exploration Licences – E29/638 (75% St George: 25% IGO) and E29/962 (100% St George)
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Based on visual observation, a number of samples appear to include lithium minerals in the form of spodumene and lepidolite – see photos in Figure 1 and Figure 3
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All samples to be submitted for laboratory assays and selected samples will also undergo analysis by portable XRD spectrometer, with first results expected next week
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Soil sampling is also underway covering the area extending east from the pegmatite outcrops to test for possible extensions below cover
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These early observations of outcrop at Mt Alexander suggest it may form part of an underexplored lithium province first identified by Red Dirt Metals (ASX: RDT) – see ASX Release by Red Dirt dated 28 September 2021 Mt Ida – A New Lithium Province
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Figure 1 – photos of pegmatites from E29/962 (100% St George) with coarse grained purple crystals that may be indicative of spodumene and lepidolite, subject to confirmation by portable XRD spectrometer and laboratory analysis.
ST GEORGE MINING LIMITED ACN 139 308 973 Suite 2, Level 2, 28 Ord Street West Perth WA 6005 |PO Box 100 West Perth WA 6872 www.stgeorgemining.com.au | Phone +61 8 6118 2118
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ASX / MEDIA RELEASE
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St George Mining Limited (ASX: SGQ ) (“ St George ” or “ the Company ”) is pleased to announce further significant positive results from the lithium exploration programme at its Mt Alexander Project, located in the north-eastern Goldfields of Western Australia.
John Prineas, St George Mining’s Executive Chairman, said:
“We are delighted that our exploration team is continuing to deliver success in identifying pegmatite outcrops that appear highly prospective for lithium mineralisation, providing support for Mt Alexander’s significant lithium potential.
“We are seeing thick pegmatite dykes spread over a zone more than 15km long in the same corridor parallel to the Copperfield Granite where major discoveries have been announced by Red Dirt Metals. We are increasingly excited by the potential that Mt Alexander may form part of the same pegmatite hosted lithium mineral system.
“Our field work is the first lithium focused exploration conducted at Mt Alexander and we very pleased with the pace at which the evidence for the lithium potential is building.
“This lithium work is a fantastic complement to our nickel exploration at Mt Alexander, which is progressing in parallel with a fixed loop electromagnetic survey scheduled to start next week. This will enable final modelling of several promising nickel targets for drill testing.
“With lithium and nickel drilling planned at Mt Alexander for Q4 2022, it is an exciting time for shareholders.”
Lithium potential at Mt Alexander:
Initial rock chip sampling of pegmatite outcrop at Mt Alexander confirmed a geochemistry indicative of lithium, caesium and tantalum (LCT) fertile pegmatites.
In particular, assays returned high values of rubidium – a key indicator of fertile pegmatites in weathered terrains such as the Mt Ida lithium province. For further details of the initial rock chip sampling, see our ASX Release dated 7 September 2022 Significant Lithium Potential at Mt Alexander.
An expanded field mapping and rock chip sampling programme is ongoing to identify areas for additional pegmatites and drilling. The current programme is focused on two tenements where extensive pegmatite outcrops continue to be mapped – E29/638 (75% St George; 25% IGO) and E29/962 (100% St George); refer to Figure 4.
The east-west striking pegmatite dykes mapped at these tenements occur along a north-south trending corridor parallel with the Copperfield Granite, which may be a source of the pegmatites. This pegmatite corridor extends for more than 15km across St George’s tenure and can be traced southwards to the area hosting lithium discoveries announced by Red Dirt at its Mt Ida Project.
Given the early success of our expanded field programme, St George’s maiden drill programme for lithium targets will be scheduled for Q4 2022.
More fertile pegmatites identified:
To date, 69 rock chip samples have been collected from E29/638 and 50 samples from E29/962 in the second phase of our mapping and sampling programme. The samples will be submitted for laboratory assay to check for the presence of lithium and other pathfinder elements for lithium mineralisation.
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ASX / MEDIA RELEASE
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In addition, selected samples will undergo analysis by portable XRD spectrometer – this can provide a semi-quantitative report on the mineralogy of rock samples including confirmation of any spodumene and lepidolite content.
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Figure 2 – map of St George’s tenements showing the areas for rock chip sampling (against magnetic RTP 1VD). Yellow stars denote the Mt Alexander high grade Ni-Cu-PGE deposits discovered to date.
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ASX / MEDIA RELEASE
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Figure 3 – photos of pegmatites from E29/962 (100% St George) including coarse grained purple crystals that may be indicative of spodumene and lepidolite, subject to confirmation by portable XRD spectrometer and laboratory analysis.
Importantly, mineralogy considered highly prospective for lithium minerals has been visually identified in numerous samples collected from five pegmatite dykes sampled to date on E29/962 - refer to Figure 4.
These prospective pegmatites have an east-west strike of up to 400m and occur along a 1.7km interval of the LCT Pegmatite corridor. The width and extent of these outcropping pegmatites suggests the potential for a lithium mineral system that could host significant mineralisation at depth. Field mapping in the area is ongoing.
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ASX / MEDIA RELEASE
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A section of the LCT Pegmatite corridor within E29/962 is poorly exposed. This area is directly along strike from the lithium occurrences at Red Dirt’s ground to the south and warrants further investigation for the potential of prospective pegmatites, some of which may be under shallow cover. A soil survey of 200m line spacing x 100m sample spacing is underway in this area to test for a geochemical signature that may be indicative of the presence of lithium bearing pegmatites.
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Figure 4 – map of the area on E29/962 (against magnetic RTP 1VD) where interpreted lithium bearing pegmatites have been identified by visual observation of rock chip samples. These observations are subject to confirmation by portable XRD spectrometer and laboratory analysis.
Review of historical drilling:
Previous drilling at Mt Alexander has been focused on nickel exploration rather than lithium targets. Some of the nickel drilling has intersected significant intervals of pegmatites, which were never assayed as they were not considered prospective for nickel sulphides.
For example, diamond drill hole MAD198 intersected pegmatites between 66.5m to 86.5m downhole with no assays completed for this interval. A review of the historical drilling is underway with a view to sampling and/or assaying any pegmatite intersections.
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ASX / MEDIA RELEASE
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New lithium province:
The province around Mt Ida is emerging as a new lithium province since the significant high-grade lithium discovery by Red Dirt at its Mt Ida Project in September 2021.
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In addition to St George and Red Dirt, significant exploration is underway in this region by:
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Zenith Minerals (ASX: ZNC) in joint venture with EV Metals plc – see ASX Release by Zenith dated 23 May 2022 New Lithium Exploration Project Secured
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Hawthorn Resources (ASX: HAW) in joint venture with Hancock Prospecting – see ASX Release by Hawthorn Resources dated 29 August 2022 Hancock executes agreement for nickel, lithium and copper at Mt Bevan Project
The lithium prospectivity of this region is interpreted to be associated with the large Copperfield Granite. The prospective LCT Pegmatite corridor is interpreted between the contact with the Copperfield Granite in the east and the Ida Fault in the west; see Figure 5.
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Figure 5 – map showing the interpreted prospective pegmatite corridor and the location of lithium projects along strike to St George’s Mt Alexander Project (against magnetic RTP 1VD).
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ASX / MEDIA RELEASE
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About the Mt Alexander Project:
The Mt Alexander Project is located 120km south south-west of the Agnew-Wiluna Belt, which hosts numerous world-class nickel deposits. The Project comprises six granted exploration licences – E29/638, E29/548, E29/962, E29/954, E29/972 and E29/1041 – which are a contiguous package. A seventh granted exploration licence – E29/1093 – is located to the south-east of the core tenement package.
The Cathedrals, Stricklands, Investigators and Radar nickel-copper-cobalt-PGE discoveries are located on E29/638, which is held in joint venture by St George (75%) and IGO Limited (25%). St George is the Manager of the Project, with IGO retaining a 25% non-contributing interest (in E29/638 only) until there is a decision to mine. All other Project tenements are owned 100% by St George.
The Mt Alexander Project is also interpreted to host more than 15km of a LCT pegmatite corridor which is known to host significant lithium mineralisation at the Mt Ida Project of Red Dirt Metals (ASX: RDT) located to the south-east of the Mt Alexander Project.
Authorised for release by the Board of St George Mining Limited.
| For further information, please contact: | |
|---|---|
| John Prineas | Peter Klinger |
| Executive Chairman | Media and Investor Relations |
| St George Mining Limited | Cannings Purple |
| +61 411 421 253 | +61 411 251 540 |
| [email protected] | [email protected] |
Competent Person Statement:
The information in this report that relates to Exploration Targets, Exploration Results, Mineral Resources or Ore Reserves for the Mt Alexander Project is based on information compiled by Mr Dave Mahon, a Competent Person who is a Member of The Australasian Institute of Geoscientists. Mr Mahon is employed by St George Mining Limited to provide technical advice on mineral projects, and he holds performance rights issued by the Company.
Mr Mahon 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 Mahon consents to the inclusion in the report of the matters based on his information in the form and context in which it appears.
Forward Looking Statements:
This announcement includes forward-looking statements that are only predictions and are subject to known and unknown risks, uncertainties, assumptions and other important factors, many of which are beyond the control of St George, the directors and the Company’s management. Such forward-looking statements are not guarantees of future performance.
Examples of forward-looking statements used in this announcement include use of the words ‘may’, ‘could’, ‘believes’, ‘estimates’, ‘targets’, ‘expects’, or ‘intends’ and other similar words that involve risks and uncertainties. These statements are based on an assessment of present economic and operating conditions, and on a number of assumptions regarding future events and actions that, as at the date of announcement, are expected to take place.
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ASX / MEDIA RELEASE
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Actual values, results, interpretations or events may be materially different to those expressed or implied in this announcement. Given these uncertainties, recipients are cautioned not to place reliance on forward-looking statements in the announcement as they speak only at the date of issue of this announcement. Subject to any continuing obligations under applicable law and the ASX Listing Rules, St George does not undertake any obligation to update or revise any information or any of the forward-looking statements in this announcement or any changes in events, conditions or circumstances on which any such forward-looking statement is based.
This announcement has been prepared by St George Mining Limited. The document contains background Information about St George Mining Limited current at the date of this announcement.
The announcement is in summary form and does not purport to be all inclusive or complete. Recipients should conduct their own investigations and perform their own analysis in order to satisfy themselves as to the accuracy and completeness of the information, statements and opinions contained in this announcement.
The announcement is for information purposes only. Neither this announcement nor the information contained in it constitutes an offer, invitation, solicitation or recommendation in relation to the purchase or sale of shares in any jurisdiction. The announcement may not be distributed in any jurisdiction except in accordance with the legal requirements applicable in such jurisdiction. Recipients should inform themselves of the restrictions that apply to their own jurisdiction as a failure to do so may result in a violation of securities laws in such jurisdiction.
This announcement does not constitute investment advice and has been prepared without taking into account the recipient’s investment objectives, financial circumstances or particular needs and the opinions and recommendations in this announcement are not intended to represent recommendations of particular investments to particular persons.
Recipients should seek professional advice when deciding if an investment is appropriate. All securities transactions involve risks, which include (among others) the risk of adverse or unanticipated market, financial or political developments. To the fullest extent of the law, St George Mining Limited, its officers, employees, agents and advisers do not make any representation or warranty, express or implied, as to the currency, accuracy, reliability or completeness of any information, statements, opinion, estimates, forecasts or other representations contained in this announcement. No responsibility for any errors or omissions from the announcement arising out of negligence or otherwise is accepted.
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The following section is provided for compliance with requirements for the reporting of exploration results under the JORC Code, 2012 Edition.
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 (eg 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. |
Rock Chip: a sample is collected from in‐situ material at surface adjudged by the geologist on site. The sample between 0.5‐2kg is collected in a marked calico bag for submission for assay. Soils: Each soil sample is taken from a manually excavated pit approximately 300mm deep (depending on the nature of the sampling medium). The loose material at the bottom of the pit is placed through a series of sieves, with the fine fraction of the 180micron sieve placed into pre‐numbered paper geochemical sample envelope. The sample envelopes are then sent to a certified laboratory for assay. |
| 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 (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. |
Rock Chips: Samples are collected by hand or dislodged by geo pick of in‐situ material at surface. Soils: Each sample is sourced from the loose material at the bottom of the sample pit which is considered to be representative of the profile being targeted. |
| Rock Chips: samples are taken under the discretion of geologists with the intention of taking a representative rock chip sample for the parent rock sampled. Soils: A single sample are taken on a predetermined spacing and collected using uniquely numbered calico bags. Each sample collected for assay typically weighs 50g, and once dried, is prepared for the laboratory. Pulverisation further reduces the particle size with 90% of the material passing 75micron. The sample is then assayed using the Aqua Regia Digest method. |
|
| Drilling techniques Drill type (eg core, reverse circulation, open‐hole hammer, rotary air blast, auger, Bangka, sonic, etc) and details (eg core diametre, 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). |
N/A |
| Drill sample recovery Method of recording and assessing core and chip sample recoveries and results assessed. |
N/A |
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| Criteria JORC Code explanation |
Commentary |
|---|---|
| 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. |
N/A |
| To date, no sample recovery issues have yet been identified that would impact on potential sample bias in the soil profile or sampling methods. |
|
| 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. Whether logging is qualitative or quantitative in nature. Core (or costean, channel, etc) photography. The total length and percentage of the relevant intersections logged. |
Each sample is recorded for the lithology, type and nature of the soil. The surface topography and type is recorded at the sample location. |
| The logging is both qualitive and quantitive in nature, with sample recovery and volume being recorded, |
|
| N/A | |
| 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. |
N/A |
| All samples were dry when sampled. | |
| Samples are dried, crushed and pulverized to produce a homogenous representative sub‐sample for analysis at the laboratory. |
|
| No QAQC are inserted within the submitted samples and are not deemed necessary for this stage of exploration. Internal laboratory QAQC measures are considered sufficient |
|
| The sample material is sourced from the bottom of the pits with efforts made to reduce the amount of surficial ‘float’ material entering the sample. Sieving of the sample helps to homogenise and reduce size fraction of the sample |
|
| The sample sizes are considered to be appropriate to screen for the geochemical signatures of base metal sulphide mineralisation and associated geology. |
|
| 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. |
The soil samples are analysed using an Four Acid Digest. Al, Ca, Cr, Cu, Fe, K, Mg, Mn, P, S, Ti, V and Zn have been determined by Inductively Coupled Plasma (ICP) Optical Emission Spectrometry. Ag, As, Bi, Cd, Co, Li, Mo, Nb, Ni, Pb, Sb, Sn, Te, W, Cs, Rb, Ta have been determined by Inductively Coupled Plasma (ICP) Mass Spectrometry. |
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| Criteria | JORC Code explanation Commentary |
|---|---|
| Au, Pt and Pd have been determined by Fire assay. The assay method and detection limits are appropriate for analysis of the elements required. |
|
| For geophysical tools, spectrometres, handheld XRF instruments, etc, the parametres used in determining the analysis including instrument make and model, reading times, calibrations factors applied and their derivation, etc. A handheld XRF instrument (Olympus Innov‐X Spectrum Analyser) is used to provide an initial assay of the geochemical sample onsite. One reading is taken per sample. The instruments are serviced and calibrated at least once a year. Field calibration of the XRF instrument using standards is periodically performed (usually daily). The handheld XRF results are only used for preliminary assessment and reporting of element compositions, prior to the receipt of assay results from the certified laboratory. |
|
| Nature of quality control procedures adopted (eg standards, blanks, duplicates, external laboratory checks) and whether acceptable levels of accuracy (ie lack of bias) and precision have been established. Laboratory QAQC involves the use of internal lab standards using certified reference material (CRMs), blanks and pulp duplicates as part of in‐house procedures. The Company also submits a suite of CRMs, blanks and selects appropriate samples for duplicates. Sample preparation checks for fineness are performed by the laboratory to ensure the grind size of 90% passing 75µm is being attained. |
|
| Verification of sampling and assaying |
The verification of significant intersections by either independent or alternative company personnel. Significant intersections and assays are verified by the Company’s Technical Director and Consulting Field Geologist. |
| The use of twinned holes. N/A |
|
| Documentation of primary data, data entry procedures, data verification, data storage (physical and electronic) protocols. Primary data is captured onto a laptop using acQuire software and includes geological logging, sample data and QA/QC information. This data, together with the assay data, is entered into the St George Mining central SQL database which is managed by external consultants. |
|
| Discuss any adjustment to assay data. No adjustments or calibrations will be made to any primary assay data collected for the purpose of reporting assay grades and mineralised intervals. For the geological analysis, standards and recognised factors may be used to calculate the oxide from assayed elements, or to calculate volatile free mineral levels in rocks. |
|
| 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. The sample locations are determined by using a handheld GPS system with an expected accuracy of +/‐5m for easting, northing and elevation. This is considered adequate for the type and purpose of the surveys. |
| Specification of the grid system used. The grid system used is GDA94, MGA Zone 51. |
|
| Quality and adequacy of topographic control. Elevation data has been acquired using DGPS surveying at specific location across the project, including drill collars, and entered into the central database. A topographic surface has been created using this elevation data. The local elevation data is also captured with the handheld GPS when sampling. |
|
| Data spacing and distribution |
Data spacing for reporting of Exploration Results. The soil samples were taken at 20m intervals along the geochemical survey lines. |
| 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. N/A |
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| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| Whether sample compositing has been applied. | No compositing has been applied to the exploration results. | |
| Orientation of | Whether the orientation of sampling achieves | Rock Chips: The rock chip samples are taken at the discretion of the |
| data in relation | unbiased sampling of possible structures and | geologist on site. However, the orientation of key structures may be |
| to geological | the extent to which this is known, considering | noted whilst mapping exercises are undertaken. |
| structure | the deposit type. | The soil samples are taken at regular intervals, at a near |
| perpendicular orientation (unless otherwise stated). However, the | ||
| orientation of key structures may be locally variable and any | ||
| relationship to potential mineralisation has yet to be identified. | ||
| If the relationship between the drilling | No orientation based sampling bias has been identified in the data | |
| orientation and the orientation of key | to date. | |
| mineralised structures is considered to have | ||
| introduced a sampling bias, this should be | ||
| assessed and reported if material. | ||
| Sample | The measures taken to ensure sample security. | Chain of Custody is managed by the Company until samples pass to a |
| security | duly certified assay laboratory for subsampling and assaying. The | |
| sample bags are stored on secure sites and delivered to the assay | ||
| laboratory by the Company or a competent agent. When in transit, | ||
| they are kept in locked premises. Transport logs have been set up to | ||
| track the progress of samples. The chain of custody passes upon | ||
| delivery of the samples to the assay laboratory. | ||
| Audits or | The results of any audits or reviews of sampling | Sampling techniques and procedures are regularly reviewed |
| reviews | techniques and data. | internally, as is the data. The soils programme has been reviewed by |
| third parties and consultant geologists. |
Section 2 Reporting of Exploration Results (Criteria listed in section 1 will also apply to this section where relevant)
| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| Mineral | Type, name/reference number, location and | The Mt Alexander Project is comprised of six granted Exploration |
| Tenement and | ownership including agreements or material | Licences (E29/638, E29/548, E29/954, E29/962, E29/972 and |
| Land Status | issues with third parties including joint ventures, | E29/1041). Tenement E29/638 is held in Joint Venture between St |
| partnerships, overriding royalties, native title | George (75% interest) and Western Areas (25% interest). E29/638 | |
| interests, historical sites, wilderness or national | and E29/548 are also subject to a royalty in favour of a third party | |
| park and environmental settings. | that is outlined in the ASX Release dated 17 December 2015 (as | |
| regards E29/638) and the ASX release dated 18 September 2015 (as | ||
| regards E29/548). | ||
| 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. |
No environmentally sensitive sites have been identified on the tenements. A registered Heritage site known as Willsmore 1 (DAA identification 3087) straddles tenements E29/548 and E29/638. All |
|
| tenements are in good standing with no known impediments. | ||
| Exploration | Acknowledgment and appraisal of exploration | Exploration on tenements E29/638 and E29/962 has been largely for |
| Done by Other | by other parties. | komatiite‐hosted nickel sulphides in the Mt Alexander Greenstone |
| Parties | Belt. Exploration in the northern section of E29/638 (Cathedrals Belt) | |
| and also limited exploration on E29/548 has been for komatiite‐ | ||
| hosted Ni‐Cu sulphides in granite terrane. No historic exploration has | ||
| been identified on E29/954 or E29/972. | ||
| Mafic‐Ultramafic intrusion related high grade nickel‐copper‐PGE | ||
| sulphides were discovered at the Mt Alexander Project in 2008. | ||
| Drilling was completed to test co‐incident electromagnetic (EM) and | ||
| magnetic anomalies associated with nickel‐PGE enriched gossans in | ||
| the northern section of current tenement E29/638. The drilling | ||
| identified high grade nickel‐copper mineralisation in granite‐hosted | ||
| and East‐West orientated ultramafic units and the discovery was | ||
| named the Cathedrals Prospect. |
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| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| Geology | Deposit type, geological setting and style of | The Mt Alexander Project is at the northern end of a western |
| mineralisation | bifurcation of the Mt Ida Greenstones. The greenstones are bound to | |
| the west by the interpreted Ida Fault, a significant Craton‐scale | ||
| structure that marks the boundary between the Kalgoorlie Terrane | ||
| (and Eastern Goldfields Superterrane) to the east and the Youanmi | ||
| Terrane to the west. | ||
| The Mt Alexander Project is prospective for further high‐grade nickel‐ | ||
| mineralisation (both komatiite and mafic‐ultramafic intrusive hosted) | ||
| and also precious metal mineralisation (i.e. orogenic gold) that is | ||
| typified elsewhere in the Yilgarn Craton. | ||
| Drill hole | A summary of all information material to the | |
| information | understanding of the exploration results | Drill hole collar locations are shown in the maps and tables included |
| including tabulation of the following |
in the body of the relevant ASX releases. | |
| information for all Material drill holes: | ||
| • Easting and northing of the drill hole collar | ||
| •Elevation or RL (Reduced Level – elevation | ||
| above sea level in metres) of the drill hole collar | ||
| • Dip and azimuth of the hole | ||
| • Down hole length and interception depth | ||
| • Hole length | ||
| Data | In reporting Exploration Results, weighting | Reported assay intersections are length and density weighted. |
| aggregation | averaging techniques, maximum and/or |
Significant intersections are determined using both qualitative (i.e. |
| methods | minimum grade truncations (e.g. cutting of high | geological logging) and quantitative (i.e. lower cut‐off) methods. |
| grades) and cut‐off grades are usually Material and should be stated. |
For massive sulphide intersections, the nominal lower cut‐off is 2% for either nickel or copper. For disseminated, blebby and matrix |
|
| sulphide intersections the nominal lower cut‐off for nickel is 0.3%. | ||
| Where aggregated intercepts incorporate short | Any high‐grade sulphide intervals internal to broader zones of | |
| lengths of high grade results and longer lengths | sulphide mineralisation are reported as included intervals. | |
| 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. |
Any disseminated, matrix, brecciated or stringer sulphides with (usually) >1% nickel or copper on contact with massive sulphide mineralisation are grouped with the massive sulphides for calculating significant intersections and the massive sulphide |
|
| mineralisation is reported as an including intersection. | ||
| The assumptions used for any reporting of | No metal equivalent values are used for reporting exploration | |
| metal equivalent values should be clearly | results. | |
| stated. | ||
| Relationship | These relationships are particularly important in | Assay intersections are reported as down hole lengths. Drill holes are |
| between | the reporting of exploration results. If the | planned as perpendicular as possible to intersect the target EM plates |
| mineralisation | geometry of the mineralisation with respect to | and geological targets so downhole lengths are usually interpreted to |
| widths and | the drill hole angle is known, its nature should | be near true width. |
| intercept | be reported. If it is not known and only the down | |
| lengths | hole lengths are reported, there should be a | |
| clear statement to this effect. | ||
| diagrams | Appropriate maps and sections (with scales) and | A prospect location map, cross section and long section are shown |
| tabulations of intercepts should be included for | in the body of relevant ASX Releases. | |
| any significant discovery being reported. These | ||
| should include, but not be limited to a plane | ||
| view of drill hole collar locations and | ||
| appropriate sectional views. | ||
| Balanced | Where comprehensive reporting of all |
Reports on recent exploration can be found in ASX Releases that are |
| Reporting | Exploration Results is not practical, |
available on our website atwww.stgm.com.au: |
| representative reporting of both low and high grades and/or widths should be practiced to avoid misleading reporting of Exploration Results. |
The exploration results reported are representative of the mineralisation style with grades and/or widths reported in a consistent manner. |
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| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| Other | Other exploration data, if meaningful and | All material or meaningful data collected has been reported. |
| substantive | material, should be reported including (but not | |
| exploration | limited to): geological observation; geophysical | |
| data | 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. | ||
| Further Work | The nature and scale of planned further work | A discussion of further exploration work underway is contained in the |
| (e.g. tests for lateral extensions or depth | body of recent ASX Releases. | |
| extensions or large – scale step – out drilling).Diagrams clearly highlighting the areas of possible extensions, including the main |
Further exploration will be planned based on ongoing drill results, geophysical surveys and geological assessment of prospectivity. |
|
| geological interpretations and future drilling | ||
| areas, provided this information is not | ||
| commercially sensitive. |
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