Last checked at 8 Mar 2023 07:36
Greatland Gold plc (AIM: GGP)
E: info@greatlandgold.com
W: https://greatlandgold.com
: twitter.com/greatlandgold
NEWS RELEASE | 8 March 2023
Scallywag Exploration Results
Prospectivity of targets confirmed
Significant gold and multi-element geochemical anomalism detected
High-grade silver and copper mineralisation intersected
THIS ANNOUNCEMENT CONTAINS INSIDE INFORMATION AS STIPULATED UNDER THE UK MARKET ABUSE REGULATIONS. ON PUBLICATION OF THIS ANNOUNCEMENT VIA A REGULATORY INFORMATION SERVICE, THIS INFORMATION IS CONSIDERED TO BE IN THE PUBLIC DOMAIN.
Greatland Gold plc (AIM:GGP; Greatland or Company) is pleased to announce the results of its 2022 exploration programme at its 100%-owned Scallywag project in the Paterson region of Western Australia. Scallywag is located adjacent to Greatland's flagship Havieron gold-copper project which the Company discovered in 2018.
Highlights
§ Hole A35RD001 targeting the A35 Prospect conductor intersected 2m @ 2.04g/t Au from 70m, within a mineralised gold halo of 12m @ 0.48g/t Au from 69m noting that the interval contains wet samples and immediately precedes a missing sample. Significantly, anomalous bismuth and other pathfinder geochemistry is associated with the intersection
§ Anomalous gold, strong silver and copper plus pathfinders identified while testing a conductor at the Pearl prospect (PPDD003) include:
- 1m @ 1,364g/t Ag and 0.35% Cu from 76m (remains open at depth)
- 1m @ 0.76g/t Au and 109ppm Bi from 251m
- 1m @ 0.1% Cu and 22.6ppm Bi from 418m
- 1m @ 50.9ppm Bi from 65m
§ These results came as a result of a ground electromagnetic (EM) survey (follow up on the 2021 programme) which confirmed and refined several EM conductor targets, testing of which commenced with reverse circulation (RC) pre-collar and diamond core drilling
Greatland Managing Director, Shaun Day, commented:
"Our recent exploration campaign at Scallywag has delivered the most encouraging results to date."
"At the A35 Prospect, pre-collar drilling was completed with gold mineralisation intercepted plus important pathfinder geochemistry encountered, including bismuth which is associated with the Havieron and Telfer gold-copper deposits. The high-grade silver and copper mineralisation intercepted at the Pearl Prospect, confirms the possibility of a new style of deposit being identified. The underlying deeper geophysical targets at both prospects are yet to be tested but have now been prioritised for diamond drilling in 2023."
"These results, together with the continual improvement in understanding of the buried geology, stratigraphy and structure, increase our confidence in the prospectivity of the ground, and our ability to vector towards intrusion related and other styles of mineralised systems at Scallywag."
Overview of the 2022 Scallywag Programme.
Exploration work in 2022 focused on drill testing prospects and anomalies defined from previous ground EM and drilling programmes (see RNS Announcement titled "Results from the 2021 Exploration Programme at Scallywag" dated 5 April 2022).
A specialised RC rig was used to drill pre-collars ahead of completing the holes with a diamond rig with the aim of improving result turnarounds. A total of eight RC pre-collar holes for 1,238m and one diamond hole with a total depth of 488.6m, for a total of 1,726.6m, were completed (see Table 1 and Figure 1 below).
Table 1. 2022 Scallywag Prospects - Drill Hole Collar Data
Hole ID | Prospect | Hole Type | EOH (m) | GRID ID | Easting | Northing | RL | Dip | Azi |
SWRD004 | Swan | RC pre-collar | 204 | MGA94_51 | 445483 | 7607552 | 246 | -63 | 107 |
SWRD005 | Swan | RC pre-collar | 200 | MGA94_51 | 446414 | 7607335 | 243 | -65 | 85 |
A34RD001 | A34 | RC pre-collar | 180 | MGA94_51 | 447805 | 7606511 | 243 | -65 | 105 |
PRD001 | Pearl | RC pre-collar | 120 | MGA94_51 | 445132 | 7606981 | 246 | -62 | 105 |
PRD002 | Pearl | RC pre-collar | 102 | MGA94_51 | 445192 | 7606708 | 250 | -65 | 85 |
A35RD001 | A35 | RC pre-collar | 114 | MGA94_51 | 448749 | 7606497 | 249 | -60 | 275 |
A35RD002 | A35 | RC pre-collar | 114 | MGA94_51 | 449021 | 7606487 | 249 | -60 | 290 |
A35RD003 | A35 | RC pre-collar | 204 | MGA94_51 | 449388 | 7606476 | 247 | -65 | 305 |
PDD003 | Pearl | DD | 488.6 | MGA94_51 | 445529 | 7607016 | 246 | -60 | 90 |
9 Holes |
| 1,726.6 |
|
Figure 1. Ground EM, Drilling and targets
The approach to drilling was influenced by unexpectedly high water inflows in some areas, limiting the achievable depth of the pre-collars. The diamond rig became available late in the field season after completing other priorities, resulting in only one hole (PDD003) completed at Scallywag. Completion of the remainder of the RC pre-collars with diamond tails is planned for 2023 as is follow up drilling based on the latest results.
Pearl Prospect
Following ground EM geophysical surveys, refined EM conductor targets were generated at the Pearl prospect during the start of the field season. In addition to drilling two RC pre-collars to test the plate targets defined during 2021, an additional hole was diamond drilled from surface (being PDD003) targeting a newly identified high priority EM conductor.
Drilling intersected fine-grained, silty sandstone sediments with zones of variably intense calcareous sandstones. A zone of high water inflow and extremely broken ground, thought to be a major fault or shear structure, was intersected. No sample was able to be collected between 77m and 151m downhole, as a mud-rotary method was required to advance the hole due to challenging ground conditions.
Several small metallic chips with native copper and chalcopyrite were collected from the rubbly core at around 76 - 77m, immediately before the area of maximum broken ground and no sample returned. Initial portable X-ray fluorescence (PXRF) analysis showed readings up to 17% copper, with highly anomalous silver and tungsten. Any interpretation as to the origin and nature of these metallic fragments would be highly speculative given the nature of the sampling.
Subsequent laboratory assays revealed multiple instances of anomalous precious and base metals (see Table 2 and Figure 2) including:
§ 1m @ 1,364g/t Ag and 0.36% Cu from 76m
§ 1m @ 0.76g/t Au with a 109ppm Bi from 251m
§ 1m @ 0.11% Cu from 418m
§ 1m @ 50.9ppm Bi from 65m
Figure 2. Drill Section (Orientation 7607000N) of PDD003 showing anomalous intervals and associated core
Hole | EOH (m) | East | Nth | RL (m) | Dip (o) | Azi (o) | From (m) | To (m) | Interval (m) | Au (ppm) | Bi (ppm) | Cu (ppm) | Ag (ppm) | Te (ppm) |
PDD003 | 488.7 | 445525 | 7607015 | 247 | -60 | 90 | 65 | 66 | 1 | 50.9 | 115 | 0.12 | 0.4 | |
74 | 75 | 1 | 0.22 | 0.5 | 104 | 0.28 | ||||||||
75 | 76 | 1 | 0.062 | 20.2 | 95.3 | 0.15 | 0.3 | |||||||
76 | 77 | 1 | 0.02 | 4.6 | 3545 | 1364 | ||||||||
173 | 174 | 1 | 0.13 | 4 | 62 | 2.39 | ||||||||
207 | 208 | 1 | 0.11 | 4.7 | 280 | 0.5 | ||||||||
251 | 252 | 1 | 0.76 | 108.6 | 26 | 0.5 | 3.7 | |||||||
260 | 261 | 1 | 0.03 | 8.8 | 1744 | 0.49 | 0.3 | |||||||
418 | 419 | 1 | 0.07 | 22.6 | 1088 | 1.71 | 0.3 | |||||||
A35RD001 | 114 | 448749 | 7606497 | 249 | -60 | 275 | 69 | 81 | 12* | 0.48 | ||||
incl. | 70 | 72 | 2* | 2.04 | 10.8 | 57 | 0.1 | 5.75 | ||||||
A35RD003 | 204 | 449388 | 7606476 | 247 | -65 | 305 | 63 | 64 | 1 | 0.11 | 0.5 | 31 | ||
91 | 92 | 1 | 0.21 | 0.2 | 9 | |||||||||
126 | 127 | 1 | 0.22 | 0.2 | 6 | |||||||||
176 | 177 | 1 | 0.17 | 0.6 | 13 | |||||||||
A34RD001 | 180 | 447805 | 7606511 | 243 | -65 | 105 | 104 | 105 | 1 | 0.36 | 0.1 | 52 |
Table 2. Significant assays from Scallywag drilling
Interestingly, the high copper-silver assay interval comes from the final recovered sample before drilling conditions forced mud-rotary drilling. The poor drilling conditions are likely due to a significant structure being intersected in the hole. From the assay results at the top of the structure it is likely that this large structure is mineralised. Mineralised shear zones are hosts to many ore bodies in Australia and globally. Greatland is intending to re-drill at least part of the unsampled hole interval during its 2023 program. This will enable the Company to complete the geological picture and more fully understand the highly encouraging metal values in the PXRF reading and lab assays.
A35 Prospect
At the A35 Prospect, three RC pre-collars were drilled to target the deep interpreted EM conductor plates. Assay results for A35RD001 returned a significant gold intersection of 12m @ 0.48g/t Au from 69m, including 2m @ 2.04g/t Au from 70m, in the weathered profile, with associated geochemical pathfinder element anomalism (see Table 2). It must be noted that the hole was also affected by water inflows and the majority of samples from the mineralised zone from around 68m to 86m downhole were wet or moist and there was potentially downhole smearing of the high gold grades. No sample was able to be recovered from the 72 - 73m interval.
The results are highly encouraging as the gold and base metal anomalism may represent a supergene enrichment of primary mineralisation at depth, potentially around the untested EM plate target, and the water inflows may indicate a significant geological structure, also promising for transporting and focusing gold-copper mineralising fluids. Completion of the diamond core tails and testing of the EM plate is a priority for the 2023 programme.
Ground EM Surveying
Detailed 1D and 2D re-processing of high priority zones within the aerial electromagnetic datasets was completed as part of the 2022 work programme. An additional Ground Electro-Magnetic (GEM) survey was completed over the Pearl and A35 targets to better define the geometry and location of the interpreted bedrock conductors, prior to drilling. Approximately 20-line kilometres of fixed loop GEM data were collected, over the Pearl and A35 target areas (see Figure 1).
Figure 3. Plan View showing completed recent drill holes and UFF Soil Samples on the 100% owned Scallywag licence; background image is 1vd RTP aeromagnetic image
Soil Sampling
A total of 339 soil samples were collected over the western part of the Scallywag licence (see Figure 3). Samples were collected mainly 100m apart, up to 200m in places, on 300 - 800m spaced, east south east orientated, available cleared tracks. This work was designed to test the efficacy of the Ultra Fine Fraction analysis method which is considered useful in areas of sandy, thicker cover. Results were low in tenor and inconclusive given the small sample. Further surface sampling options are being evaluated given the relatively modest cover known in the north western part of the tenement.
Next Steps
The 2023 exploration programme at Scallywag is designed to complete the testing of the mineralisation at the Pearl and A35 prospects as well as the previously defined GEM conductors at the Swan, A35 and A34 prospects with diamond core tails to the RC pre-collars
Infill and extensional surface geochemistry in suitable areas which follows up results from the 2022 Ultra Fine Fraction geochemistry programme will also be completed.
Contact
For further information, please contact:
Greatland Gold plc
Shaun Day, Managing Director | info@greatlandgold.com
Nominated Advisor
SPARK Advisory Partners
Andrew Emmott / James Keeshan / Neil Baldwin
greatlandgold@sparkapl.com | +44 203 368 3550
Corporate Brokers
Berenberg | Matthew Armitt / Jennifer Lee | +44 203 368 3550
Canaccord Genuity | James Asensio / Patrick Dolaghan | +44 207 523 8000
SI Capital Limited | Nick Emerson / Sam Lomanto | +44 148 341 3500
Media Relations
UK - Gracechurch Group | Harry Chathli / Alexis Gore / Henry Gamble | +44 204 582 3500
Australia - Fivemark Partners | Michael Vaughan | +61 422 602 720
About Greatland
Greatland is a mining development and exploration company focused primarily on precious and base metals.
The Company's flagship asset is the world-class Havieron gold-copper project in the Paterson region of Western Australia, discovered by Greatland and presently under development in joint venture with ASX gold major, Newcrest Mining Limited.
Havieron is located approximately 45km east of Newcrest's existing Telfer gold mine. The box cut and decline the Havieron orebody commenced in February 2021. Development continues to accelerate with record advancement achieved in the December 2022 quarter. Havieron is intended to leverage the existing Telfer infrastructure and processing plant. Access to Telfer will de-risk the development, reduces capital expenditure and lowers the project's carbon footprint.
Greatland has a proven track record of discovery and exploration success and is pursuing the next generation of tier-one mineral deposits by applying advanced exploration techniques in under-explored regions. Greatland has a number of exploration projects across Western Australia and in parallel to the development of Havieron is focused on becoming a multi-commodity miner of significant scale.
Competent Persons Statement
Information in this announcement pertaining to Reporting of Exploration Results has been reviewed and approved by Mr Damien Stephens, a Member of the AusIMM, who has more than 30 years relevant industry experience. Mr Stephens is a full-time employee of the Company and has a financial interest in Greatland. Mr Stephens 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 (the JORC Code) and under the AIM Rules - Note for Mining and Oil and Gas Companies, which outline standards of disclosure for mineral projects. Mr Stephens consents to the inclusion in this announcement of the matters based on this information in the form and context in which it appears. Mr Stephens confirms that the Company is not aware of any new information or data that materially affects the information included in the historical market announcements, and that the form and context in which the information has been presented has not been materially modified.
JORC Code, 2012 Edition - Table 1
Section 1 Sampling Techniques and Data
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) § 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 | § An RC Drill rig was used to drill pre- collars for follow up tails with a multi-purpose RC-DD rig, or the multipurpose rig was used to drill mud rotary from surface to competent ground or through the cover sequence with a diamond tail completed in competent ground/basement, to obtain representative samples in an industry standard method § Greatland RC samples consisted of rifle split representative 1m crushed rock samples with average weights of less than 5kg § Greatland diamond samples comprise half core material in generally 1m lengths (NQ and HQ diameter core) or 0.5m lengths (in PQ core). All basement and the basal 20m of the Permian cover was sampled where intersected with Diamond or RC drilling. Core was cut using an automated core-cutter § No regular sampling was completed for mud rotary drilling as the sample is considered contaminated, however occasional PXRF readings are taken of the slurry for broad prospectivity mapping § Cutting of core adjacent to downhole orientation line or, where un-oriented and possible, orthogonal to visible geological structures such as bedding, foliation; ensures sample representivity § 50% of the core is retained for future check logging, re-sampling and QA/QC Ground EM Data Collection: In late September through early October 2021, Vortex Geophysics on behalf of Greatland Gold undertook the collection of 4.2-line kilometres of Fixed Loop electromagnetic data and 17.2-line km of Moving Loop ground electromagnetic data. The traverses were undertaken over five target areas identified from the 2020 Heliborne EM survey
The data collection traverses were customised in orientations such as to avoid crossing sand dunes. Initial survey planning was to collect the data using an In-loop configuration, however strong "IP" effects recorded in the data resulted in a change of the survey design to Slingram. Consequently, some In-loop traverses were recollected using the Slingram configuration. Additionally, a small, Fixed Loop survey was undertaken over anomaly A32
Moving Loop Data collection specifications are: - 200m square transmitter loops - Zonge GGT30 transmitter - 3 component EMIT smart B-field (fluxgate) sensor - EMIT SMARTem24 receiver - Base frequency 0.5 Htz - Duty cycle 50% - Off time ramp 1 msec - 39 Time channels 0.095msec to 371msec - Station spacing: 100m and 50m Fixed Loop Data collection specifications are: - 200m by 300m transmitter loop (East by North) - Zonge GGT30 transmitter - 3 component EMIT smart B-field (fluxgate) sensor - EMIT SMARTem24 receiver - Base frequency 0.5 Htz - Duty cycle 50% - Off time ramp 1 msec - 39 Time channels 0.095msec to 371msec - Line spacing 50m - Station spacing: 100m and 50m. - Line Orientation: east-west, east of Tx Loop |
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) | § RC or mud-rotary pre-collars were followed by HQ then NQ diamond drill core to EOH § The core is oriented using a Reflex mark III tool, nominally every core run (around 6m)
|
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 | § Recovery is measured on core and reconciled against driller's depth blocks in each core tray. Basement core recovery is typically around 100% § No specific measures have been taken to maximise recovery, other than employing skilled drillers § Half core cut at a consistent spacing from orientation lines assist in sample representivity § No relationship between recovery and grade has been observed § To ensure sample quality from RC drilling, a face sampling drill bit was used and an attempt was made to keep the sample dry to avoid downhole smearing. Where this was not possible the sample was noted as wet in the sample log. Where this is the case some potential for sample bias may exist |
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 | § The logging is of sufficient quality to support a Mineral Resource estimate, and comprises a combination of quantitative and qualitative features. The entire hole is logged § Geological logging recorded qualitative descriptions of lithology, alteration, mineralisation, veining, and structure including orientation of key geological features § Geotechnical measurements were recorded including Rock Quality Designation (RQD), solid core recovery and qualitative rock strength measurements § Magnetic susceptibility measurements were recorded every metre using a KT20 machine § The bulk density of selected drill core intervals was determined at site on whole core samples § Digital data was recorded on site and stored in an SQL database § All drill cores were photographed, prior to cutting and sampling the core § The ground EM survey data identified several potential bedrock conductors. These have been modelled by an expert geophysical Consultant Dave McInnes from Montana GIS in Maxwell, using the Leroi Algorithm, to delineate their conductance and location |
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 | § Drill samples were freighted by road to the laboratory. All core is cut with a core saw, and half core sampled § The samples are assayed at Intertek (Perth, WA) Samples were dried at 105oC, and the bulk of the samples pulverised (using LM5) to produce a pulped product. Oversize primary samples were crushed and a 3kg subsample then milled with the LM5 mill § Sub sampling is reduced to minimum by using total sample pulverisation prior to sub sampling wherever possible § The sample sizes (2-3kg) are considered appropriate for the material being sampled |
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 (ie lack of bias) and precision have been established. | § The samples were assayed for Au by a 50gm fire assay and for a multi-element scan using 4 acid digest and MS and OES finish for pathfinder and lithogeochemical elements. The assays are considered total rather than partial § Greatland QA/QC procedures include using reference samples and field duplicate samples every 25 samples, in addition to the laboratories in- house QA/QC methods § Analysis of the quality control sample assay results indicates that an acceptable level of accuracy and precision has been achieved and the database contains no analytical data that has been numerically manipulated § Historical drilling- no sampling reported |
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. | § No twinned holes have been completed § All data entry procedures, including original logging, sample depth selection for sampling and recording of sample numbers are recorded digitally in an electronic database § There are no adjustments to assay data, other than below detection samples are reported at negative one half the detection limit |
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 | § Drill collar locations were surveyed using hand held GPS. RL's were collected with the same GPS § Drill rig alignment was attained using a hand held compass § Downhole survey was collected every 30m in diamond drill core segments of the drill hole using a single shot Axis Mining Champ Gyro § The topography is generally low relief to flat, elevation within the dune corridors in ranges between 250-265m AHD steepening to the southeast § All collar coordinates are provided in the Geocentric Datum of Australian (GDA94 Zone 51). All relative depth information is reported in Australian Height Datum (AHD) |
Data spacing and distribution | § Data spacing for reporting of Exploration Results § Whether the data spacing and distribution is sufficient to establish the degree of geological and grade continuity appropriate for the Mineral Resource and Ore Reserve estimation procedure(s) and classifications applied § Whether sample compositing has been applied | § Drill holes are individual exploration holes targeting specific targets, and are not part of a grid pattern § Not applicable in early stage exploration § No sample compositing has been applied
|
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 | § Drilling is oriented at various angles to folded layering, and to identified sulphide mineralised structures. The relationship to possible mineralised structures is unknown at this stage
|
Sample security | § The measures taken to ensure sample security | § The security of samples is controlled by tracking samples from drill rig to database § Entire core samples are delivered by company personnel to a freight company in Port Hedland for delivery by road freight to the assay lab in Perth, where the core is cut and sampled |
Audits or reviews | § The results of any audits or reviews of sampling techniques and data | § No audits or reviews have been completed |
Section 2 Reporting of Exploration Results
Criteria | JORC Code explanation | Commentary |
Mineral tenement and land tenure status | § Type, reference name/number, location and ownership including agreements or material issues with third parties such as joint ventures, partnerships, overriding royalties, native title interests, historical sites, wilderness or national park and environmental settings § The security of the tenure held at the time of reporting along with any known impediments to obtaining a licence to operate in the area | § The Scallywag tenement E45/4701 is 100% owned by Greatland Pty Ltd § The tenement is subject to a Land Access Agreement with Jamukurnu-Yapalikurnu Aboriginal Corporation
|
Exploration done by other parties | § Acknowledgment and appraisal of exploration by other parties | § Historical work comprised shallow drilling in the north end of the Scallywag tenement (72 generally aircore holes, averaging 47.3m deep, 4 RAB holes (average 68m) and 9 RC holes (average 96.3m) by companies including Newcrest and Normandy Exploration Limited. § Historical reports (WAMEX "A" numbers) are referenced in previous RNS announcements dated 24 August 2021 and 16 April 2021 |
Geology | § Deposit type, geological setting and style of mineralisation | § Exploration is for intrusion related and orogenic, structurally controlled Au-Cu deposits similar to Telfer, Havieron and Winu, all located in Neo-Proterozoic Yeneena Group sediments of the Paterson Province, Western Australia |
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 why this is the case | § Greatland drill hole collar details are listed in - Table 1 and anomalous results in Table 2
|
Data aggregation methods | § In reporting Exploration Results, weighting averaging techniques, maximum and/or minimum grade truncations (eg 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 | § No economically significant results have been reported, and no data aggregation methods have been applied § Where anomalous results are quoted (Table 2) the samples have been selected as follows: - Au >0.1ppm; or - Ag >2ppm; or - Cu >500ppm; or - Bi >5ppm; or - Pb >200ppm; or - Zn >1000ppm
|
Relationship between mineralis-ation 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 (eg 'down hole length, true width not known') | § No economically significant results are reported, and there is no known relationship between reported widths and the geometry of any 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 | § Maps and a Section are provided in Figures 1-3. No significant discovery is reported |
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 | § The reporting is considered balanced |
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 exploration data other than that provided in the figures |
Further work | § The nature and scale of planned further work (eg tests for lateral extensions or depth extensions or large-scale step-out drilling) § Diagrams clearly highlighting the areas of possible extensions, including the main geological interpretations and future drilling areas, provided this information is not commercially sensitive | § Further drilling of the ground EM targets including the Swan target is planned for 2022, along with soil sampling, geophysical follow up and possible ground EM |