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DATELINE RESOURCES LIMITED — Interim / Quarterly Report 2021
Jul 25, 2021
64793_rns_2021-07-25_27e30f83-4060-4be5-9c15-086f6f70f5df.pdf
Interim / Quarterly Report
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ASX Release
DATELINE RESOURCES LIMITED
(ACN 149 105 653) ASX Code: DTR
CAPITAL STRUCTURE
Share Price
million
MAJOR SHAREHOLDERS
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JUNE 2021 QUARTERLY ACTIVITIES REPORT
Dateline Resources Limited (ASX: DTR) ( Dateline or the Company ) is pleased to provide an update on its activities for the June 2021 quarter. The Company’s focus during the period was progressing the acquisition of the Colosseum Gold Mine (Colosseum) in California and commencing underground development at the Gold Links Project in Colorado.
HIGHLIGHTS
Colosseum Gold Mine
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The primary activity for the quarter was the comprehensive review of historical BP Minerals data:
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BP defined a resource at Colosseum of 1.1Moz Au down to an average depth of 850ft (260m) below the surface, at a 0.5g/t Au cut-off grade.
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Two well defined and steeply dipping breccia pipes, East and West Pipes, are defined at Colosseum.
DIRECTORS & MANAGEMENT
Mark Johnson AO Chairman
Stephen Baghdadi Managing Director Greg Hall Non-Executive Director
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Data confirms that both breccia pipes continue for another 1,750ft (530m) below the defined resource shell.
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Mineralised grade in the West Pipe increases with depth, with highest grades of 4.4g/t Au being encountered in the deeper unmined portion of the pipe.
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Post quarter end, the Company announced that a review of USGS data had highlighted radiometric anomalies that offer potential for REE mineralisation.
Gold Links Gold Mine
Tony Ferguson Non-Executive Director
Bill Lannen Non-Executive Director
John Smith Company Secretary
CONTACT
John Smith Phone: +61 2 9375 2353 Postal Address: P.O. Box 553 South Hurstville NSW 2221 Email: [email protected]
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Mining contractor mobilised to site ahead of 1,000m development program.
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• Underground diamond drill crew will undertake 4,000m of underground drilling from within the decline;
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Ore sorting results materially increased head grades and decreased tonnage:
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▪ Gold grade increased by 41.6% from 15.34g/t to 21.71g/t Au.
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The tonnage was reduced by 33.7% with a negligible loss of grade.
Corporate
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Initial financial commitment of US$500k for acquisition of Colosseum Gold Mine completed.
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The Company’s shares were consolidated on a 1-for-25 basis, following shareholder approval.
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At the end of the quarter, the Company’s cash balance was $8.025 million. Post quarter end, the Company raised a further $4.1 million at $0.09 per share.
BP Minerals wholly owned subsidiary Amselco LLC carried out the historical exploration program at the Colosseum Gold Mine prior to the introduction of the JORC Code. The exploration work, resource and reserve estimates were completed to a high standard and independently reviewed by outside firms but cannot be relied upon for reporting mineral resources or reserves. There is no guarantee of replicating BP Minerals results that are discussed in this announcement.
ASX Release 26 July 2021
Colosseum Gold Mine, California
In March 2021, Dateline entered into a binding Agreement with LAC Minerals (USA) LLC, a wholly owned subsidiary of Barrick Gold Corporation, for the acquisition of 100% of Colosseum and will acquire 83 mining claims that host the Colosseum Gold Mine and surrounding areas, totalling approximately 1,600 acres[1] .
The Colosseum Gold Mine is located in the southern section of the Walker Lane Trend in California, USA. The Walker Lane Trend Hosts numerous substantial discoveries including the Corvus Gold owned 1.7Moz Mother Lode deposit and the 6.5Moz Castle Mountain gold mine owned by Equinox Gold (located 50km to the Southeast of Colosseum). In July 2021, AngloGold Ashanti submitted a proposal to acquire Corvus Gold for US$370 million (A$496 million).
The primary activities for the June quarter were reviewing the extensive historical literature, reports and plans on the Project in order to compile a digital database.
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Figure 1: Colosseum location relative to other operating mines and significant discoveries
BP Minerals data review
During the quarter, the Company reviewed historical reports and data for the Project. Colosseum was originally discovered in the early 1970’s, with the production of ~344,000 ounces of gold between 1988 and 1993 from two open pits. At the time of closure, the gold price was at a cyclical low below US$350/oz. No exploration has been undertaken at site over the past 25 years.
[1] ASX release – 15 March 2021 - Colosseum Gold Mine Acquisition
ASX Release 26 July 2021
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Figure 2 – Photo of the current open pits at Colosseum
Geology and mining of the breccia pipes
The development of the breccia pipes at Colosseum is interpreted to have occurred ~100my ago with the intrusion of felsic magma into the Pre-Cambrian sedimentary basement rocks. This event is regionally extensive with felsic dyke outcrops exposed over a distance of 10km between Colosseum and the Mountain Pass Rare Earth Mine to the south-east.
The West and East breccia pipes have a tear-like appearance in plan view, each measuring ~800ft x 400ft (245m x 120m). Both pipes are connected by a narrow dyke. The East pipe has a relatively consistent grade vertically of ~1.3g/t Au, whereas the West pipe has more variability, with grades ranging from ~2.0g/t Au up to 4.4g/t Au (refer Figure 3 below).
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Figure 3 – Schematic long section showing the breccia pipes down to the known depth
ASX Release 26 July 2021
Depth potential identified
Dateline reviewed many technical reports, maps, sections, and speeches prepared by former management of the Colosseum Gold Mine covering the period from 1970 to 1993.
In several of the reports, the authors describe the drilling of two diamond drill holes (DDH-1 and DDH-2) in 1972 by Draco Mines, with both drilled to ~3,000 feet (~915m). Both drill holes targeted a porphyry molybdenum deposit thought to lie beneath the pipes and not gold. Draco Mines intersected the rubble breccia pipes at 2,600 feet (790m) below the surface.
The reference to the rubble rock breccia at depth is significant as the rubble breccia is the primary host of gold bearing sulphide mineralisation at Colosseum. Reports of the rubble breccia continuing for a further 1750ft (530m) below the known 850ft (260m) of mineralisation offers a compelling target for further assessment.
BP modelling and assessment
BP defined a resource for Colosseum of 1.1Moz Au based on 169 reverse circulation holes drilled to a depth of up to 1,000 feet below surface. The resource was estimated to 800 feet depth for the East Pipe and 900 feet for the West Pipe, both using a 0.5g/t Au cut-off in a kriged model.
The original Feasibility Study completed in 1984 envisaged an 8.5year mine life, with 12,146,000 short tons at a grade of 0.064oz/st (2.20g/t Au) for 777koz Au to be extracted over the Life of Mine (LOM). The Feasibility Study was based on a forecast gold price of US$450/oz Au.
Mining commenced in January 1988 and ceased in July 1992 at Colosseum with some stockpiled material processed through to May-1993. The gold price was under US$350/oz at the time the Colosseum mine ceased production.
A review of records indicates that there was ore remaining in the pits at the time of closure.
Rare Earth Potential
Post quarter end, the Company announced that a review of USGS data had highlighted a coincident thorium and potassium radiometric anomaly 8km along strike from the Mountain Pass Rare Earth mine, the only operating rare earth mine in the US (Figure 4).
The Mountain Pass carbonatite is a thin linear body that trends NNW, along strike from Colosseum.
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0km 5km
SCALE
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Figure 4: Google Earth image showing the locations of Colosseum and Mountain Pass
ASX Release 26 July 2021
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1 mile
Thorium
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Potassium
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Figure 5: Colosseum thorium anomaly at southern end of claim
Figure 6: Potassium anomaly with annular ring around breccia pipes
Figure 5 shows an image of the thorium channel from the 2019 SE Mojave survey, flown at 200m spaced lines at 100m clearance. The Colosseum pit area is marked in red and the Colosseum tenements in blue. Figure 6 shows and annular ring of potassic alteration surrounding the two breccia pipes (red square) and a potassium anomaly coincident with the thorium anomaly at the south end of the Colosseum claim block.
Importance of Thorium and Potassium in REE Exploration
Elevated concentrations of the elements: Thorium (Th), Uranium (U) and Fluoride (F) compared to regional background abundances are useful reconnaissance indicators for geochemical exploration of REE’s. Sodium (Na) and Potassium (K) are also important indicators as they are believed to control precipitation of REE’s in and around the margins of carbonatites (such as that seen at Mountain Pass).
Next Steps
Dateline is currently digitising the significant volume of plans and sections in order to build a comprehensive database of the Project.
The Company is planning to complete the acquisition from Barrick in Q3 and prepare plans for an extensive core drilling and soil sampling program.
ASX Release 26 July 2021
Gold Links Gold Mine, Colorado
Gold Links hosts a swarm of high-grade narrow gold veins over more than 5km strike length and a kilometre across strike. Historical mapping and drilling coupled with the Company’s own exploration work has confirmed mineralisation is extensive throughout the Project. Dateline’s 100% owned Lucky Strike Mill will be used to process material from the Gold Links Mine.
Mobilisation of Mining Contractor
During the quarter, the Company appointed a mining contractor that has mobilised equipment to site and has commenced development of a 1km decline with 4.0m x 4.3m dimensions. The decline will act as a haulage and exploration tunnel, from which the 2150 and West gold veins will be drill tested.
The decline will link up with an existing drive at a lower elevation, which will provide a second escapeway for underground personnel and enhance mine ventilation. The decline work is expected to be completed in the fourth quarter of the 2021 calendar year.
Underground Diamond Drilling
The underground diamond drill crew mobilised to site and commenced drilling in July 2021. The drilling company will undertake 4,000 metres (~12,000 feet) of underground drilling from within the decline (Figure 7).
The diamond drilling will be located approximately 50-75 metres away from both the 2150 and West veins, which will enable them to complete an anticipated 2-3 drill holes per week. Underground drilling is expected to be completed during the December quarter.
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Figure 7 – Section view of planned decline development and drilling at Gold Links Project
ASX Release 26 July 2021
Ore Sorting
The Company completed a Gold Links ore sorting program with TOMRA to assess the potential of upgrading the ore prior to further processing through the Lucky Strike mill.
A total of 849kg of material was transported to the TOMRA ore sorting facilities in Sydney. Two tests were conducted using both laser and XRT sorting technology with the XRT technology proving to be a better fit for the Gold Links Project.
Table 1 below is a summary of the optimal test results received from the XRT sorter:
| Process* | Run # | Rock size (mm) | Total mass (kg) |
Mass in ore stream (kg) |
Mass in waste stream (kg) |
Grade in ore stream (g/t Au) |
|---|---|---|---|---|---|---|
| XRT-CON | Run 1 | 16-48 | 316 | 101 | 215 | 26.7 |
| XRT-DE | Run 2 | 16- 48 |
215 | 59 | 156 | 15.7 |
| Unsorted (rock size less than 16mm) |
<16 | 269 | 269 | 20.7 | ||
| Total(kg)/Averageg/t Au | 585 | 429 | 156 | 21.7 |
Table 1 – Summary of optimal sort option using XRT method only
Ore sorting testwork
The ore sorting testwork was completed to determine the suitability of the Gold Links mineralised material to be upgraded using advanced ore sorting technology provided by TOMRA Sorting Australia.
These results are considered to be “proof-of-concept” tests by TOMRA and were conducted on a representative sample of mineralised material collected from Gold Links.
A total of 849kg of mineralised material was collected from Gold Links, with an aggregate grade of 15.34g/t Au. Further details of the sample preparation are provided below and in Table 2.
The ore sorting procedure requires an initial set-up of the ore sorter and calibration against proprietary image processing software. To achieve this, images were taken of the samples by subjecting them to “static” tests to determine their response to the TOMRA X-Ray Transmission (XRT) system.
The X-ray sensor signal is a function of the sample atomic density and provides information on its composition. By combining two energy levels simultaneously, it is possible to differentiate particles by their relative atomic densities.
Assays were completed and provided by Bureau Veritas Adelaide.
For the purposes of the testwork, the sample was screened to 16-48mm and separated into a high-grade fines stream (not sorted) and two TOMRA Feed streams (Sample 1 – 316kg at 12.5g/t Au, Sample 2 – 264kg @ 13.2g/t Au). The TOMRA Feed was then sorted into concentrate (targeting galena) and waste streams, with the waste stream reprocessed again through the XRT targeting all sulphides. The upgrade factor, which includes the TOMRA concentrate stream as well as the high-grade bypass material, resulted in a gold upgrade of 41.6%, a decrease in sample mass of 33.7% , and a 2.6% loss in contained gold.
ASX Release 26 July 2021
| Mass (kg) | Grade (g/t Au) | Gold (grams) | |
|---|---|---|---|
| Feed from site sample | 849 | 15.34 | 13.03 |
| High-grade unsorted | 269 | 20.70 | 5.57 |
| TOMRA XRT-CON Feed – Sample 1 | 316 | 12.50 | 3.95 |
| Sample 2 Feed (used in other runs) | 264 | 13.20 | 3.48 |
| XRT-CON Concentrate | 101 | 26.70 | 2.70 |
| XRT-CON Waste | 215 | 5.90 | 1.27 |
| TOMRA XRT-DE Feed | 215 | 5.90 | 1.27 |
| XRT-DE Concentrate | 59 | 15.70 | 0.92 |
| XRT-DE Waste | 156 | 2.20 | 0.34 |
| XRT-CON + XRT-DE Concentrate | 160 | 22.65 | 3.62 |
| TOMRA Upgrade | -49% | +81% | -8% |
| TOMRA Waste | 156 | 2.20 | 0.34 |
| Final Results – Optimal Path | |||
| Mass (kg) | Grade (g/t Au) | Gold (grams) | |
| Sample 1 Concentrate + High Grade Unsorted |
-33.7% | +41.6% | -2.6% |
Table 2 – 2021 Gold Links ore sorting trial results – Optimal Path
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Figure 5 - TOMRA Test work flow chart with sample weight (upper) and gold grade (lower), rounding has been applied
Ore sorting implications
The Company’s 100%-owned Lucky Strike processing facility is located 50km via road from the Gold Links Gold Mine. Lucky Strike was recommissioned in 2018 with a throughput capacity of 33,000tpa. The plant includes a primary circuit for the extraction of nuggety or free gold from the veins. A secondary flotation circuit allows for the production of a gold-silver-lead concentrate.
By implementing ore sorting technology after primary crushing, the tonnage going into the primary and secondary circuits may be materially decreased by ~33%. For Dateline, this translates into the ability to mine and transport up to 45,000tpa to Lucky Strike for processing through the 33,000tpa plant.
Subject to further analysis and modelling, there is the potential to increase future gold production by 40% compared to not installing ore sorting technology.
ASX Release 26 July 2021
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Figure 7 – TOMRA ore sorting schematic
New testwork program
Following the success of the recent ore sorting program for Gold Links, the Company plans to expand the study with a new sample expected to be dispatched to a laboratory in Kentucky during Q3.
The new testwork program will investigate the potential of a different model ore sorter that incorporates the laser and XRT within the same machine.
Discussions have commenced with various suppliers for the purchase or lease of ore sorting equipment for Gold Links.
CORPORATE
Colosseum transaction update
During the quarter, the Company completed the first US$0.5 million payment as part of the consideration terms. The Company is progressing the establishment of US banking facilities that will allow the completion of the acquisition, expected to occur during Q3.
Share Consolidation
The Company’s shares were consolidated on a 1-for-25 basis during the quarter, following approval by shareholders.
Cash at bank
At the end of the quarter, the Company had cash and investments of A$8.025 million.
Post quarter end, in July 2021, the Company raised a further $4.1 million at $0.09 per share to accelerate the Colosseum work program.
ASX Release 26 July 2021
SEPTEMBER QUARTER – PLANNED ACTIVITIES
During the September quarter, the Company intends to undertake the following activities:
Gold Links Gold Mine
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Underground mine development
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Underground diamond drilling
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Dispatch of sample and commencement of new ore sorting program
Colosseum Gold Mine
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Completion of acquisition from Barrick
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Digitisation of historical records
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Planning of field program
Authorised by the Dateline Board.
For more information, please contact:
Stephen Baghdadi Managing Director +61 2 9375 2353 www.datelineresources.com.au
Follow Dateline on Twitter: https://twitter.com/Dateline_DTR
About Dateline Resources Limited
Dateline Resources Limited (ASX: DTR) is an Australian publicly listed company focused on gold mining and exploration in North America. The Company owns 100% of the Gold Links and Green Mountain Projects in Colorado, USA as well as plans to acquire the Colosseum Gold Mine in California.
The Gold Links Gold Mine is a historic high-grade gold mining project where over 150,000 ounces of gold was mined from high-grade veins. Mineralisation can be traced on surface and underground for almost 6km from the Northern to the Southern sections of the project. The Company aims to delineate sufficient Mineral Resources to commence a small high-grade, low-cost operation by the end of 2021.
The Company owns the Lucky Strike gold mill, located 50km from the Gold Links mine, within the Green Mountain Project. It is proposed that ore from Gold Links would be transported to Lucky Strike for processing.
The Colosseum Gold Mine is located in the Walker Lane Trend in East San Bernardino County, California and produced approximately 344,000 ounces of gold (see ASX release 15 March 2021). Significant potential remains for extension to mineralization at depth.
ASX Release 26 July 2021
Non JORC Historical Data
The historical resource information included in this announcement are not reported in accordance with the JORC Code and a competent person has not done sufficient work to classify the historical estimates as mineral resources or reserves in accordance with the JORC Code. It is uncertain whether further evaluation and future exploration by the Company and its exploration team will result in the historical estimates referred to in this announcement being able to be reported as mineral resources or reserves in accordance with the JORC Code in the future.
The non-JORC historical estimates included in this announcement were made prior to the introduction of the JORC Code. Despite this, the Competent Person assesses these historical estimates as providing reasonable indications of the size and grade of the gold deposits likely to be in the area based on historical drilling completed by and reports prepared by the prior owners of the Colosseum Gold Mine Project. This data is relevant to the Company's ongoing evaluation of the prospectivity and future economic potential across the Colosseum Gold Mine Project.
The Company is not in possession of any new information or data relating to the historical estimates that materially impacts on the reliability of the estimates or the Company’s ability to verify the historical estimates as mineral resources or ore reserves in accordance with the JORC Code. Further information in relation to the Colosseum Gold Mine (including the nature and source of the historical data acquired from Barrick Gold (the former owners of the Colosseum Gold Mine Project)) is included in the Company's ASX announcement dated 15 March 2021.
The Company continues to source and review historical reports, drill hole data, assay certificates and grade contour maps received from Barrick Gold as part of the Company's acquisition of the Colosseum Gold Mine Project. However, extensive exploration field work including geophysical interpretation, surveying historical drill hole data, closerspaced and deeper drilling at the Colosseum Gold Mine Project is required to further verify the non-JORC Code historical estimates included in this announcement.
The Company will fund all future exploration work on the Colosseum Gold Mine Project either from its existing working capital or from raising further capital by placing new shares or by expanding existing or entering into new debt facilities. Any such further exploration work or future capital raising initiatives will be conducted by the Company in accordance with the Company's constitution, the Corporations Act 2001 (Cth), the ASX Listing Rules and subject always to the receipt and terms of all necessary regulatory approvals and legal requirements.
Competent Person Statement
The information in this report related to historical resource estimates is based on, and fairly represents, information and supporting documentation reviewed and prepared by Mr Greg Hall who is a Chartered Professional of the Australasian Institute of Mining and Metallurgy (CP-IMM). Mr Hall has sufficient experience that is relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to quality as a Competent Person as defined in the 2012 Edition of the "Australasian Code for Reporting Exploration Results, Mineral Resources and Ore Reserves" (JORC Code). Mr Hall is a Non-Executive Director of Dateline Resources Limited and consents to the inclusion in the report of the matters based on this information in the form and context in which it appears. The information included in this announcement is an accurate representation of the available data in relation to the Colosseum Gold Mine Project.
ASX Release 26 July 2021
JORC Code, 2012 Edition – Table 1 report template
Section 1 Sampling Techniques and Data
(Criteria in this section apply to all succeeding sections.)
| Criteria | JORC Code explanation | Commentary |
| Sampling | • Nature and quality of sampling (e.g. cut | •A total of 849kg was sampled by mining a five |
| techniques | channels, random chips, or specific | foot section of the vein that is located |
| specialised industry standard | underground at the Gold Links at 9900rl. The | |
| measurement tools appropriate to the | sample included 100% of the vein material plus | |
| minerals under investigation, such as | an equal amount either side of the vein so that it | |
| down hole gamma sondes, or handheld | represented a mechanized mining width of 5 | |
| XRF instruments, etc.). These examples | feet. | |
| should not be taken as limiting the broad | ||
| meaning of sampling. | ||
| • Include reference to measures taken to | ||
| ensure sample representivity and the | ||
| appropriate calibration of any |
||
| measurement tools or systems used. | ||
| • Aspects of the determination of | ||
| mineralisation that are Material to the | ||
| Public Report. | ||
| • In cases where ‘industry standard’ work | ||
| has been done this would be relatively | ||
| simple (e.g. ‘reverse circulation drilling | ||
| was used to obtain 1 m samples from | ||
| which 3 kg was pulverised to produce a | ||
| 30 g charge for fire assay’). In other | ||
| cases more explanation may be | ||
| required, such as where there is coarse | ||
| gold that has inherent sampling | ||
| problems. Unusual commodities or | ||
| mineralisation types (e.g. submarine | ||
| nodules) may warrant disclosure of | ||
| detailed information. | ||
| Drilling | • Drill type (e.g. core, reverse circulation, | |
| techniques | open-hole hammer, rotary air blast, | |
| auger, Bangka, sonic, etc.) and details | ||
| (e.g. core diameter, triple or standard | ||
| tube, depth of diamond tails, face- | ||
| sampling bit or other type, whether core | ||
| is oriented and if so, by what method, | ||
| etc.). | ||
| Drill sample | • Method of recording and assessing core | |
| recovery | 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. |
ASX Release 26 July 2021
| Criteria | JORC Code explanation | Commentary | |
| 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. | |||
| Sub-sampling | • If core, whether cut or sawn and | ||
| techniques | and | whether quarter, half or all core | |
| sample | taken. | ||
| preparation | • 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. | |||
| Quality of | • The nature, quality and appropriateness | ||
| assay data | of the assaying and laboratory | ||
| and | procedures used and whether the | ||
| laboratory | technique is considered partial or total. | ||
| tests | • For geophysical tools, spectrometers, | ||
| handheld XRF instruments, etc., the | |||
| parameters used in determining the | |||
| analysis including instrument make and | |||
| model, reading times, calibrations factors | |||
| applied and their derivation, etc. | |||
| • Nature of quality control procedures | |||
| adopted (e.g. standards, blanks, | |||
| duplicates, external laboratory checks) | |||
| and whether acceptable levels of accuracy | |||
| (i.e. lack of bias) and precision have been | |||
| established. | |||
| Verification | of | • The verification of significant | |
| sampling | and | intersections by either independent or | |
| assaying | 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. |
ASX Release 26 July 2021
| Criteria | JORC Code explanation | Commentary |
| Location of | • Accuracy and quality of surveys used to | |
| data points | 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. | ||
| Data spacing | • Data spacing for reporting of Exploration | |
| and | Results. | |
| distribution | • 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. | ||
| Orientation of | • Whether the orientation of sampling | |
| data in relation | achieves unbiased sampling of possible | |
| to geological | structures and the extent to which this is | |
| structure | 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. | ||
| Sample | • The measures taken to ensure sample | A full chain of custody was maintained during |
| security | security. | sampling and dispatch. Packing of the sample |
| was in 4 x 200ltres sealed drums and | ||
| delivered directly to the Tomra ore sorting | ||
| facility in Sydney. Once the sorting was | ||
| concluded the samples were sent directly to | ||
| Bureau Veritas labs in Adelaide for assaying. | ||
| Audits or | • The results of any audits or reviews of | |
| reviews | sampling techniques and data. |