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ORE RESOURCES LIMITED — Regulatory Filings 2021
Nov 24, 2021
65504_rns_2021-11-24_92fe1fd3-cd21-4940-ad46-a4faea35e963.pdf
Regulatory Filings
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ASX ANNOUNCEMENT
25[th] November 2021
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NICKEL SULPHIDES INTERSECTED IN NEPEAN DEEPS DRILLING
Highlights
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Second diamond drill-hole NPDD013 at Nepean Deeps intersected a 76m thick ultramafic unit with 12.5m of disseminated and matrix to semi-massive nickel sulphide mineralisation just below the targeted DHEM conductor 1A/1B
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The mineralised intersection will be logged and sampled immediately and sent to the laboratory for assaying
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NPDD013 is currently at approximately 675m down-hole and is planned to drill to 800m
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The ground dipole-dipole induced polarisation (IP) survey over the Nepean North Prospect is progressing well, with five lines completed and preliminary results already identifying strong chargeability anomalies
Auroch Minerals Limited ( ASX:AOU ) ( Auroch or the Company ) is pleased to announce an update on exploration activities at the Nepean Project in Western Australia (Auroch Minerals 80%).
The second drill-hole into the Nepean Deeps target area, NPDD013, successfully intersected 12.5m of disseminated and matrix to semi-massive nickel sulphides from 576.8m (Photographs 1 and 2; Table 1), within a 76.15m intersection of ultramafics from 534.65 – 610.80m down-hole , which is interpreted to be the underexplored Sill 1 ultramafic directly west of the mine sequence (Figure 1).
The nickeliferous sulphides were intersected just below the down-hole electromagnetic (DHEM) conductor 1A/1B, and are interpreted to be the cause of the DHEM conductor, the uppermost of three DHEM targets identified by the first Nepean Deeps drill-hole NPDD008 (Figure 1).
The intersected sulphides are pyrrhotite dominant, with both pentlandite (nickel sulphide) and chalcopyrite (copper sulphide) observed in the semi-massive to matrix sulphides. The core is currently being cut and sampled for priority assay submission.
NPDD013 is currently at a down-hole depth of approximately 675m, and is planned to be drilled to a final depth of 800m to test for any further intersections of ultramafic units and potential nickel sulphide mineralisation beneath the historic Nepean mine workings. Upon completion the drill-hole will be cased for DHEM surveying.
Auroch Managing Director Aidan Platel commented :
“We are extremely pleased to have intersected nickel sulphide mineralisation in this second hole into the Nepean Deeps target. The ultramafic unit we’ve intersected is a lot thicker than the correlating ultramafic intersected in the first hole NPDD008, and really highlights the untested potential of Nepean beneath the historic workings and beneath the level of historic exploration.
Our current interpretation is that this ultramafic is the historically named Sill 1 ultramafic, which until now was thought to be unmineralized, thus opening up a whole new potential for significant nickel sulphide mineralisation at Nepean!
The mineralised drill core will be sampled and rushed to the lab for assaying, and we look forward to announcing those results to the market when they are received. In the meantime, the drilling continues, as does the ground IP survey at the regional Nepean North prospect, which we believe will generate significant new targets for the next drilling campaign.”
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Auroch Minerals Ltd ABN 91 148 966 545 Suite 10, 38 Colin St, West Perth WA 6005 Phone: +61 8 6383 7817 Fax: +61 8 6245 9853 Email: [email protected] www.aurochminerals.com
ASX ANNOUNCEMENT 25[th] November 2021
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Regional exploration at Nepean currently comprises the ground dipole-dipole induced polarisation (IP) survey that recently commenced over the Nepean North Prospect of the Nepean Nickel Project (Figure 2), where a recent geochemistry review highlighted the prospectivity of the ultramafic sequences for nickel sulphide mineralisation. To date a total of five lines have been completed, with the survey commencing from the north. Preliminary results have identified some strong chargeability features in fresh-rock associated with both a gabbro/dolerite and the eastern basal contact of the Nepean ultramafic. The survey is expected to be completed in approximately 2 weeks, and finalised results will be used to plan follow-up exploration and drilling.
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Photograph 1 – Intersection of NPDD013 from 576.8m to 581.5m showing matrix and heavy disseminated sulphides (Po-Pn-Cpy)
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Photograph 2 – Intersection of NPDD013 at 578.4m showing matrix to semi-massive sulphides (Po- Pn-Cpy)
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Auroch Minerals Ltd ABN 91 148 966 545 Suite 10, 38 Colin St, West Perth WA 6005 Phone: +61 8 6383 7817 Fax: +61 8 6245 9853 Email: [email protected] www.aurochminerals.com
ASX ANNOUNCEMENT
25[th] November 2021
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Table 1 – Sulphide intersections in ultramafic in NPDD013
| Depth From |
Depth To |
Interval (m) |
Sulphide Type | Visual Sulphide Assemblages |
|---|---|---|---|---|
| 576.81 | 578.48 | 1.67 | Disseminated | Pyrrhotite ± Chalcopyrite - Pentlandite |
| 578.48 | 580.57 | 2.09 | Semi Massive;disseminated | Pyrrhotite - Pentlandite - Chalcopyrite |
| 580.57 | 589.3 | 8.73 | Disseminated | Pyrrhotite ± Chalcopyrite - Pentlandite |
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Figure 1 – Cross-section showing nickel sulphide intersection of current diamond drill hole NPDD013, relative to the target 1A/1B DHEM plates and initial drill-hole NPDD008
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FOLLOW US
Auroch Minerals Ltd ABN 91 148 966 545 Suite 10, 38 Colin St, West Perth WA 6005 Phone: +61 8 6383 7817 Fax: +61 8 6245 9853 Email: [email protected] www.aurochminerals.com
ASX ANNOUNCEMENT
25[th] November 2021
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Figure 2 – Map showing location and survey lines of the ground IP survey underway in the north of the Nepean Project. To-date the northern five lines have been surveyed
This announcement has been authorised by the Board of Directors of the Company.
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For further information visit www.aurochminerals.com or contact:
Aidan Platel
Managing Director E: [email protected]
Competent Persons Statement
The information in this report that relates to Exploration Results is based on information compiled by Mr Matthew McCarthy and represents an accurate representation of the available data. Mr McCarthy (Member of the Australian Institute of Mining and Metallurgy) is the Company’s Senior Geological Officer and 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’ ("JORC Code 2012"). Mr McCarthy consents to the disclosure of this information in this report in the form and context in which it appears.
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Auroch Minerals Ltd ABN 91 148 966 545 Suite 10, 38 Colin St, West Perth WA 6005 Phone: +61 8 6383 7817 Fax: +61 8 6245 9853 Email: [email protected] www.aurochminerals.com
ASX ANNOUNCEMENT 25[th] November 2021
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Forward-Looking Statements
This document may include forward-looking statements. Forward-looking statements include, but are not limited to, statements concerning Auroch Minerals Limited’s planned exploration program and other statements that are not historical facts. When used in this document, the words such as "could," "plan," "estimate," "expect," "intend," "may”, "potential", "should," and similar expressions are forward-looking statements. Although Auroch Minerals Limited believes that its expectations reflected in these forward-looking statements are reasonable, such statements involve risks and uncertainties and no assurance can be given that actual results will be consistent with these forward-looking statements.
JORC Code, 2012 Edition, Table 1 (Nepean) Section 1: Sam lin Techni ues and Data p g q
| CRITERIA | 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. ● 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 1m samples from which 3kg was pulverised to produce a 30g 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 Auroch Minerals Limited: ● Nickel mineralisation at Nepean has been sampled from the following drilling techniques: ● Diamond Core - half core samples with a maximum of 1.2m and minimum 0.2m length. ● RC drilling - 1m samples of pulverised chips, approximately 3kg’s is collected in individual calico bags ● Air Core drilling creates single metre sample of drill chips, however samples are composited every 3 metres, with the end of hole sample consisting of a 1m sample. Historic: ● Nickel mineralisation at Nepean has been sampled from Reverse Circulation (RC) 1m chip samples & Diamond core samples. Air Magnetic Survey: Contractor: UTS Client: St Francis Mining Ltd Year: 1996 Aircraft: Fletcher Instrumentation: Caesium Vapour Sample Interval: ~5m Flight Line Spacing: 50 and 100m Flight Line Direction: 068o-248o, 158o-338o, 090o-270o Tie Line Spacing: 500m and 1000m Mean Terrain Clearance: 25m Navigation: Differential GPS IP Parameters Contractor: Vortex Geophysics Receiver: 1-2x GDD 16 channel IP Receiver Transmitter: Vortex VIP-30 transmitter system rated at 1500V, 30A and 15KVA Configuration: Dipole-Dipole Line Spacing: 200m Dipole spacing: 100m |
Auroch Minerals Ltd ABN 91 148 966 545 Suite 10, 38 Colin St, West Perth WA 6005 Phone: +61 8 6383 7817 Fax: +61 8 6245 9853 Email: [email protected] www.aurochminerals.com
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ASX ANNOUNCEMENT
25[th] November 2021
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| CRITERIA | EXPLANATION | COMMENTARY |
|---|---|---|
| Domain/Cycle: Time domain – 2 seconds or 0.125Hz DHEM Parameters: Contractor: SGC Niche Acquisition Configuration: Down-hole EM (DHEM) Tx Loop size: 300x300m to 350x450m, single turn Transmitter: TTX2 Receiver: Smartem24 Sensor: DigiAtlantis Station spacing: 2m to 10 m Tx Freq: 0.5 Hz Duty cycle: 50% Current: ~68-75 Amp Stacks: 64 Readings: 2-3 repeatable readings per station •A Moving Loop Transient Electromagnetic (MLTEM)ground survey was completed at the Nepean extended mine corridor/sequence. The MLTEM survey commenced late April 2021 and was completed late June 2021. MLTEM configuration: •NORDICem24 receiver •CSIRO LANDTEM HT SQUID B-field sensor •ORE_HPTX transmitter •Loop size – 200x200m •200m line spacing •100m station spacing •Sensor offset – slingram, 200m east of loop centre •0.5Hz base frequency •200A current •~1msec ramp time •Multiple readings at 64 stacks MLTEM surveys are an industry standard practice for definition of bedrock conductors representing potential mineralised massive sulphide bodies. Source: 22,500lb Vibroseis Vehicle Line Length: ~6km Total Number of Channels: 1211x2 (2422) Active Receiver Spread (min): 600 Full Receiver Spread (max): 1200 Receiver Spacing: 5m Receiver X-line Spacing: 30m Total Number of Source Points: 1209 Source Point Spacing: 5m Source Skid (distance from each line): 15m Nominal Fold: 300 |
Auroch Minerals Ltd ABN 91 148 966 545 Suite 10, 38 Colin St, West Perth WA 6005 Phone: +61 8 6383 7817 Fax: +61 8 6245 9853 Email: [email protected] www.aurochminerals.com
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ASX ANNOUNCEMENT
25[th] November 2021
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| CRITERIA | EXPLANATION | COMMENTARY |
|---|---|---|
| Max Offset: +/- 1500m | ||
| Drilling techniques | ● Drill type (eg core, reverse circulation, open-hole hammer, rotary air blast, auger, Bangka, sonic, etc) and details (eg core diameter, triple or standard tube, depth of diamond tails, face- sampling bit or other type, whether core is oriented and if so, by what method, etc). |
Auroch Minerals Limited: • Diamond Core (DD) drilling results have been referenced in this report. Core is oriented and retrieved via double or triple tube methods. Historic: ● The project has been held by various companies since the 1960’s, with numerous phases Percussion and Diamond drilling completed. In total over 830 drill holes have completed over the Nepean tenure. This is excluding any historic underground drilling ● Focus drilled 80 RC holes to a maximum depth of 230m ● 1 Diamond drill hole was drilled by Focus, completed to a maximum depth of 188.5m |
| Drill sample recovery |
● Method of recording and assessing core and chip sample recoveries and results assessed. ● Measures taken to maximise sample recovery and ensure representative nature of the samples. ● Whether a relationship exists between sample recovery and grade and whether sample bias may have occurred due to preferential loss/gain of fine/coarse material. |
Auroch Minerals Limited • DD core recovery is measured and recorded by Auroch staff and contractors. • No relationship between sample recovery and grade has been yet observed and no sample bias is believed to have occurred. Historic: ● Sample recovery assessment details not documented by previous operators Focus Minerals. ● Sample recovery assessment details not documented by historic operators. |
| 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. |
Auroch Minerals Limited: • Drill core is lithologically and structurally logged by Geologists in the field. • Drill chips are lithologically logged by Geologists in the field • Logging is qualitative, recording rock type and mineral abundance • Logging of RC & AC chips is conducted on a 1 metre sample size. • Logging of DD core is conducted on lithological boundaries. Historic: ● Geological logging data collected to date is sufficiently detailed. At this stage detailed geotechnical logging is not required. ● Geological logging is intrinsically qualitative. ● Historic drill holes were geologically logged by previous operators and these data are available to Auroch Minerals. |
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FOLLOW US
Auroch Minerals Ltd ABN 91 148 966 545 Suite 10, 38 Colin St, West Perth WA 6005 Phone: +61 8 6383 7817 Fax: +61 8 6245 9853 Email: [email protected] www.aurochminerals.com
ASX ANNOUNCEMENT
25[th] November 2021
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| CRITERIA | EXPLANATION | COMMENTARY |
|---|---|---|
| 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. |
Auroch Minerals Limited: ● Diamond core is sawn in half with half used for sampling and the other half retained for future reference. ● 1m RC percussion, sample is split via a cyclone and cone splitter attached to the drill rig to produce a bagged 3kg sample. ● Certified reference material and blank material are inserted every 20 samples as per company QAQC procedure for both DD & RC. ● Field duplicates collected from the Cyclone and cone splitter are inserted every 60 samples ● No further sub sampling has been conducted ● 3m AC sample composites are scooped from sample piles to create a 3kg bagged sample. ● Certified reference material are inserted every 30 samples as per the company Air Core QAQC procedure. Historic: ● 1m RC percussion, maximum 1m length core samples, or as close as reasonable within geological boundaries, are considered appropriate for the style of mineralisation being targeted. ● Historic drill holes were logged at level of detail to ensure sufficient geological understanding to allow representative selection of sample intervals. ● Sampling QAQC measures taken by previous operator and Focus minerals have not been documented. ● It is assumed that Focus minerals sample sizes were appropriate for the type, style and thickness of mineralisation tested. |
| Quality of assay data and laboratory tests |
● The nature, quality and appropriateness of the assaying and laboratory procedures used and whether the technique is considered partial or total. ● For geophysical tools, spectrometers, handheld XRF instruments, etc, the parameters used in determining the analysis including instrument make and model, reading times, calibrations factors applied and their derivation, etc. ● Nature of quality control procedures adopted (eg standards, blanks, duplicates, external laboratory checks) and whether acceptable levels of accuracy (i.e. lack of bias) and precision have been established. |
Auroch Minerals Limited: ● ALS Minerals, multi element analysis method ME-ICP61 utilised for all samples, consisting of multi acid digestion with HF and ICP-AES analysis. Over limit method Ni-OG62H for ore grade Ni consisting of four acid digestion with ICP-AES analysis. PGM-ICP23 fire assay ICP-AES finish method used selectively for samples considered to contain Pt, Pd & Au. All methods are considered suitable for the style of mineralisation targeted. ● Certified Reference Material (CRM’s)and quartz blank (Blanks) samples are inserted 1:20 for DD & RC and 1:30 for AC as part of Auroch’s QAQC procedure. Accuracy and performance of CRM’s and Blanks are considered after results are received. |
Auroch Minerals Ltd ABN 91 148 966 545 Suite 10, 38 Colin St, West Perth WA 6005 Phone: +61 8 6383 7817 Fax: +61 8 6245 9853 Email: [email protected] www.aurochminerals.com
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ASX ANNOUNCEMENT
25[th] November 2021
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| CRITERIA | EXPLANATION | COMMENTARY |
|---|---|---|
| ● Field duplicates collected from the Cyclone and cone splitter are inserted every 60 samples Historic: ● Focus Minerals – utilised a AD02 ICP (4 Acid Digest) Ni, Cu & Co analysis performed by ALS. ● It is assumed that industry standard commercial laboratory instruments were used by ALS to analyse historical drill samples from the Nepean prospect. ● It is assumed that industry best practice was used by previous operators to ensure acceptable assay data accuracy and precision. Historical QAQC procedures are not recorded in available documents. |
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| Verification of sampling and assaying |
● The verification of significant intersections by either independent or alternative company personnel. ● The use of twinned holes. ● Documentation of primary data, data entry procedures, data verification, data storage (physical and electronic) protocols. ● Discuss any adjustment to assay data. |
Auroch Minerals Limited: • No third party verification has been completed to date • Drill holes have not been twinned • All primary paper data is held on site, digitised data is held in a managed database off site. • No adjustments to assays have occurred. Historic: ● All historic drilling data including collar coordinates, hole orientation surveys, total depth, sampling intervals and lithological logging were collated from statutory annual reports and historic digital data files and verified by Auroch’s Geologists. ● No indication of drill holes being twinned by previous workers has been observed or documented. ● It is assumed that industry best practice was used for collection, verification and storage of historic data. ● No adjustments to assay data were undertaken. |
| Location of data points |
● Accuracy and quality of surveys used to locate drill holes (collar and down-hole surveys), trenches, mine workings and other locations used in Mineral Resource estimation. ● Specification of the grid system used. ● Quality and adequacy of topographic control. |
Auroch Minerals Limited: • Drill collars were surveyed in GDA94/MGA Zone 51 datum by handheld GPS +-5m accuracy • At completion of programme drill collars will be surveyed using a Differential GPS +- 0.1m accuracy. Historic: • Drill collars were surveyed in GDA94/MGA Zone 51 datum by Focus Minerals. • Hole Series NP07 & NP08 have been resurveyed in the field by Auroch Minerals utilising Differential GPS with accuracy ±0.1m |
Auroch Minerals Ltd ABN 91 148 966 545 Suite 10, 38 Colin St, West Perth WA 6005 Phone: +61 8 6383 7817 Fax: +61 8 6245 9853 Email: [email protected] www.aurochminerals.com
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ASX ANNOUNCEMENT
25[th] November 2021
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| CRITERIA | EXPLANATION | COMMENTARY |
|---|---|---|
| Air Magnetic Survey: • Differential GPS was used during flight survey |
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| Data spacing and distribution |
● Data spacing for reporting of Exploration Results. ● Whether the data spacing and distribution is sufficient to establish the degree of geological and grade continuity appropriate for the Mineral Resource and Ore Reserve estimation procedure(s) and classifications applied. ● Whether sample compositing has been applied. |
Auroch Minerals Limited: • Drill data spacing of historic drill data is sufficient to establish the degree of geological and grade continuity appropriate for this stage of exploration and understanding of mineralisation Historic: ● Typically sampled in 1-4 metre intervals, skipping intervals of no interest and increasing the frequency of sampling depending on the geology observed in diamond drill core. ● Drill data spacing of historic drill data is sufficient to establish the degree of geological and grade continuity appropriate for estimating an Inferred Ni Resource. Air Magnetic Survey: • Flight-line spacing50-100m |
| Orientation of data in relation to geological structure |
● Whether the orientation of sampling achieves unbiased sampling of possible structures and the extent to which this is known, considering the deposit type. ● If the relationship between the drilling orientation and the orientation of key mineralised structures is considered to have introduced a sampling bias, this should be assessed and reported if material. |
Auroch Minerals Limited: • Drill holes azimuth is nominally planned perpendicular to stratigraphic strike • Drill hole dip is regarded suitable for subvertical stratigraphy and provides a near true width intersection to minimise orientation bias. Historic: ● Historical drill holes were oriented, as far as reasonably practical, to intersect the centre of the targeted mineralised zone perpendicular to the interpreted strike orientation of the mineralised zone. ● The geometry of drill holes relative to the mineralised zones achieves unbiased sampling of this deposit type. ● No orientation-based sampling bias has been identified. |
| Sample security | ● The measures taken to ensure sample security. |
Auroch Minerals Limited: • Drill samples are collected in labelled polyweave bags and closed with tight zip ties. • Samples are transported within 1-2days of hole completion by field staff directly to ALS laboratories. • Diamond core samples are dispatched once all cutting and sampling of drill core is complete. Drill core is maintained in a secure core yard. |
Auroch Minerals Ltd ABN 91 148 966 545 Suite 10, 38 Colin St, West Perth WA 6005 Phone: +61 8 6383 7817 Fax: +61 8 6245 9853 Email: [email protected] www.aurochminerals.com
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ASX ANNOUNCEMENT
25[th] November 2021
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| CRITERIA | EXPLANATION | COMMENTARY |
|---|---|---|
| Historic: ● It is assumed that due care was taken historically with security of samples during field collection, transport and laboratory analysis. |
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| Audits or reviews | ● The results of any audits or reviews of samplingtechniques and data. |
● No independent audit or review has been undertaken. |
Section 2: Re ortin of Ex loration Results p g p
| CRITERIA | EXPLANATION | COMMENTARY |
|---|---|---|
| Mineral tenement and land tenure status |
● Type, reference name/number, location and ownership including agreements or material issues with third parties such as joint ventures, partnerships, overriding royalties, native title interests, historical sites, wilderness or national park and environmental settings. ● The security of the tenure held at the time of reporting along with any known impediments to obtaining a licence to operate in the area. |
● The Nepean Nickel Project consists of 2 Mining Leases and 9 prospecting leases. ● M15/709, M15/1809, P15/5738, P15/5740, P15/5741, P15/5742, P15/5743, P15/5749, P15/5750, P15/5963, P15/5965 ● All leases are held by Eastern Coolgardie Goldfields Pty Ltd (ECG), a wholly owned subsidiary of Auroch Minerals Ltd. ● No known royalties exist on the leases. ● There are no material issues with regard to access. ● The tenements are in good standing and no known impediments exist. |
| Exploration done by other parties |
● Acknowledgment and appraisal of exploration by other parties. |
● Exploration drilling has been conducted by the previous lease holders including Metals Exploration NL, Endeavour, St Francis Mining, Anaconda, Spinifex Nickel, Ausminex NL - Consolidated Nickel Pty Ltd. ● Focus Minerals owned the project between 2007-2020. ● Data collected by these entities has been reviewed in detail byAuroch. |
| Geology | ● Deposit type, geological setting and style of mineralisation. |
● The Nepean Nickel Project is regarded as an Archaean komatiite-hosted nickel sulphide deposit. |
| Drill hole Information | ● A summary of all information material to the understanding of the exploration results including a tabulation of the following information for all Material drill holes: ● 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. ● If the exclusion of this information is justified on the basis that the information is not Material and this exclusion does not detract from the understanding of the report, the Competent Person should clearly explain whythis is the case. |
● A Drill hole cross-section has been included in this announcement. |
| Data aggregation | ● In reporting Exploration Results, weighting averagingtechniques,maximum and/or |
● Exploration Results have been reported by usingthe weighted average of each sample |
Auroch Minerals Ltd ABN 91 148 966 545
Suite 10, 38 Colin St, West Perth WA 6005 Phone: +61 8 6383 7817 Fax: +61 8 6245 9853 Email: [email protected] www.aurochminerals.com
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ASX ANNOUNCEMENT
25[th] November 2021
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| CRITERIA | EXPLANATION | COMMENTARY |
|---|---|---|
| methods | minimum grade truncations (e.g. cutting of high grades) and cut-off grades are usually Material and should be stated. ● Where aggregate intercepts incorporate short lengths of high grade results and longer lengths of low grade results, the procedure used for such aggregation should be stated and some typical examples of such aggregations should be shown in detail. ● The assumptions used for any reporting of metal equivalent values should be clearly stated. |
result by its corresponding interval length, as is industry standard practice. ● Grades >0.3% Ni are used to identify nickel sulphide mineralisation in fresh rock samples. ● Top-cuts were deemed not applicable considering the style of Ni mineralisation. ● Metal equivalent values have not been used. |
| Relationship between mineralisation widths and intercept lengths |
● These relationships are particularly important in the reporting of Exploration Results. ● If the geometry of the mineralisation with respect to the drill hole angle is known, its nature should be reported. ● If it is not known and only the down hole lengths are reported, there should be a clear statement to this effect (e.g. ‘down hole length,true width not known’). |
● Most drill holes are orthogonal to the orientation of stratigraphy and mineralisation. |
| Diagrams | ● Appropriate maps and sections (with scales) and tabulations of intercepts should be included for any significant discovery being reported These should include, but not be limited to a plan view of drill hole collar locations and appropriate sectional views. |
● Relevant diagrams have been included within the announcement. |
| Balanced reporting | ● Where comprehensive reporting of all Exploration Results is not practicable, representative reporting of both low and high grades and/or widths should be practiced to avoid misleading reporting of Exploration Results. |
● All results related to mineralisation at Nepean have been previously reported in the Significant Intersections table. |
| Other substantive exploration data |
● Other exploration data, if meaningful and material, should be reported including (but not limited to): geological observations; geophysical survey results; geochemical survey results; bulk samples – size and method of treatment; metallurgical test results; bulk density, groundwater, geotechnical and rock characteristics; potential deleterious or contaminating substances. |
● No other substantive data exists. |
| Further work | ● The nature and scale of planned further work (e.g. tests for lateral extensions or depth extensions or large-scale step-out drilling). ● Diagrams clearly highlighting the areas of possible extensions, including the main geological interpretations and future drilling areas, provided this information is not commerciallysensitive. |
● Auroch is currently reviewing all Nepean Nickel Project data to determine where further drilling is warranted. If it is determined that additional drilling is required, the Company will announce such plans in due course. ● Refer to diagrams in the main body of text. |
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Auroch Minerals Ltd ABN 91 148 966 545 Suite 10, 38 Colin St, West Perth WA 6005 Phone: +61 8 6383 7817 Fax: +61 8 6245 9853 Email: [email protected] www.aurochminerals.com