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DART MINING NL — Investor Presentation 2021
Mar 17, 2021
64792_rns_2021-03-17_71834214-af94-433e-842f-88119d4127f2.pdf
Investor Presentation
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ASX Release
18 March 2021
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LiDAR Data Acquisition Over Strategic Projects &
Tenements
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LiDAR data acquired across several of Dart Mining’s tenement holdings in Northeast Victoria
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Granite Flat Gold-Copper Project (EL006277)
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Dorchap Range Lithium & Tin Pegmatites (EL5315, EL006300, EL006468)
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Sandy Creek Gold Project (EL006300)
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Buckland Gold Project (EL006861 & RL006015)
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576 km[2] of airborne LiDAR coverage flown across Dart Mining’s Northeast Victoria tenements
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LiDAR data will form an essential element in directing ongoing exploration activities, project development and planning
Dart Mining NL (ASX:DTM) (“Dart Mining” or “the Company”) is pleased to report that airborne LiDAR data has been acquired over a significant area of its active prospects in Northeast Victoria. This data will be integral to the implementation of current and future exploration activities in the region.
Overview
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ASX Code: DTM
Key Prospects / Commodities:
GOLDFIELDS
Buckland Rushworth Sandy Creek Granite Flat Dart Mt Elmo Saltpetre Zulu Upper Indi
LITHIUM / TIN / TANTALUM
Granite Flat – Li-Sn-Ta Eskdale / Mitta – Li-Sn-Ta
PORPHYRY GOLD / SILVER / COPPER / MOLYBDENUM
Granite Flat – Au-Ag-Cu Stacey’s – Au-Cu Copper Quarry – Cu Gentle Annie – Cu Morgan Porphyry – Mo-Ag-Au Unicorn Porphyry – Mo-Cu-Ag
Investment Data:
LiDAR (Light Detection And Ranging) is a laser-based method of imaging the Earth’s surface at high resolution, and has the distinct advantage to be able to ‘see’ through vegetation and reveal previously obscured features (Figure 1). Dart Mining has recently acquired 576 km[2] of LiDAR data across important, highly prospective tenements within its holding across Northeast Victoria. LiDAR coverage was specifically targeted across the Buckland Valley (orogenic gold), Sandy Creek (orogenic gold), Dorchap Range (orogenic gold & lithium-tin pegmatites) and Granite Flat (orogenic gold & copper-gold porphyry potential) projects (Figure 2).
This dataset is extremely useful in identifying previously unknown historic workings and delineating geological, structural, and geomorphological trends (Figure 3). Additionally, the dataset can be used to provide high-resolution, detail digital topographic models of specific projects and target sites (Figure 3). These topographic models, or digital elevation models (DEMs) provide important, accurate and high-resolution mapped surfaces for project planning and development, particularly for drilling and field exploration activities. LiDAR provides a remarkable time and cost-saving tool in the steep, heavily vegetated terrain of the Northeast Victorian high country, allowing geologists and exploration field crews to rapidly identify and find potential prospects, historic workings, pegmatite and other outcrop.
Shares on issue: 99,945,476 Unlisted Options: 35,556,369 Performance Rights: 3,400,000
Substantial Shareholders:
Top 20 Holdings: 54.5 %
Board & Management:
Managing Director: James Chirnside Non-Executive Director: Dr Denis Clarke Non-Executive Director: Luke Robinson Company Secretary: Julie Edwards
Dart Mining NL
ACN 119 904 880
Contact Details:
412 Collins Street, Melbourne VIC 3000 Australia
James Chirnside
Email: [email protected]
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Visit our webpage: www.dartmining.com.au
Data was acquired and processed by AAM Group. LiDAR measurements were collected at four points per square metre with 10cm vertical accuracy, with the resulting dataset including a LiDAR point cloud at a 0.5m ground grid resolution.
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Figure 1: A comparison between a satellite photograph of the Mt Elmo Goldfield (A) and a processed LiDAR image of the same area (B), demonstrating the remarkable detail apparent and the utility of this tool for exploration. Grid coordinates shown are MGA Zone 55.
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Figure 2: Dart Mining’s tenement holdings in Northeast Victoria showing the areas covered by the recent airborne LiDAR mapping program with respect to key exploration projects.
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Figure 3: An example of a preliminary (processed) LiDAR interpretation across the Granite Flat area. A) Image across the Granite Flat prospect area, showing major features. B) Close up view of the main project area (red box in A) showing the processed LiDAR data. C) Preliminary interpretation of structural and mineralogical features based on LiDAR data and site visits. Grid coordinates shown are MGA Zone 55.
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Project Implications
At the Granite Flat Project, LiDAR provides a detailed and accurate map of existing drill pads, track access and historic reef and alluvial workings, as well as the delineation of structural trends, largely based on geomorphic features and lineation apparent in reef workings (e.g., Figure 3). LiDAR will also be used in 3D models of the project, providing an accurate DEM for the project for future planning and development.
At the Sandy Creek and Buckland Valley orogenic gold projects, LiDAR data will primarily be used for identifying previously unknown reef workings as well as identifying bedrock structural trends apparent within processed LiDAR data.
In the Dorchap Range Lithium-Caesium-Tantalum-Tin bearing pegmatite dyke swarm, LiDAR data has demonstrated that it is able to resolve pegmatite dykes (Figure 4), providing a number of targets for follow up investigation, particularly targets obscured by vegetation that may have been missed by previous aerial surveys. Additionally, reef workings with significant strike extents (2–3km) have been identified by LiDAR data in the Mt Elmo Goldfield, providing additional orogenic gold targets for follow-up exploration (e.g., Figure 1).
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Figure 4: An example of identification of a known pegmatite dyke in LiDAR data. A) Satellite image across the Boones Lithiumbearing pegmatite dyke, Dorchap Range. B) Processed LiDAR image with vegetation effects removed, clearing showing the extent of the Boones Pegmatite Dyke, plus additional, previously unmapped outcrop, due to exceptionally thick vegetation across the Dorchap Range.
Future Work
Future work will focus on the detailed analysis and interpretation of these high-resolution images, with interpretation used to guide prosect and project development, identification of previously unidentified historic workings and the delineation of structural, geological and geomorphic trends. Additional field work is required for ground truthing of pegmatite dykes. Preliminary analysis of LiDAR data has provided an abundance of targets for field mapping and geochemical sampling.
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For more information contact:
James Chirnside
Managing Director [email protected] +61 447 447 613
Peter Taylor Investor Relations [email protected] +61 412 036 231
About Dart Mining
Dart Mining (ASX: DTM) floated on the ASX in May of 2007 with the aim of evaluating and developing several historic goldfields, as well as substantiating a new porphyry province in North East Victoria. The area is prospective for precious, base, and strategic metals. These include Lithium, Gold, Silver, Copper, Molybdenum, Zinc, Tungsten, Tin, Tantalum, and a host of other important minerals. Dart Mining has built a strategically placed gold exploration footprint in the Central and North East regions of Victoria, where historic surface and alluvial gold mining indicates the existence of potentially significant gold endowment.
Additional JORC Information
Further details relating to the information on Dart Mining’s recent exploration activities in Northeast Victoria can be found in Dart Mining’s ASX announcements:
8[th] March 2021: “Granite Flat High Grade Gold, Silver, Copper Drill Results”
16[th] February 2021: “Sandy Creek Significant Gold Mineralisation”
7[th] December 2020: “Northeast Drilling Program Complete”
9[th] November 2020: “Commencement of Drilling Copper-Gold Mineralisation at Granite Flat”
27[th] October 2020: “Orogenic Gold and Porphyry Prospectivity, Mitta Mitta, NE Victoria”
19[th] October 2020: “Drill Results Reveal High-Grade Gold”
1[st] September 2020: “Drilling of Gold Mineralisation Commencing”
3[rd] July 2020: “Sandy Creek and Tallandoon Goldfields”
20[th] February 2020: “Buckland Gold Project Update”.
Additional information on Dart Mining’s other recent drilling and exploration operations can be found in:
16[th] November 2020: “Drilling Commencement, Historic Rushworth Goldfield”
5[th] November 2020: “Rushworth Historic High-Grade Goldfield”
30[th] October 2020: “Report for the quarter ended 30[th] September 2020”
19[th] June 2019: “Lithium Project Update”
19[th] March 2019: “Dorchap Lithium Project Update”
14[th] November 2018: “Lithium Exploration Update”
10[th] September 2018: “Exploration Update – Dorchap Lithium Project”
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Competent Person’s Statement
The information in this report has been prepared, compiled, and verified by Dr. Ben Hines PhD, MSc, a Competent Person who is a Member of the Australian Institute of Geoscientists. Dr. Hines is the senior exploration geologist for Dart Mining. Dr. Hines has sufficient experience that is relevant to the style of mineralisation and type of deposits 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”. Dr. Hines consents to the inclusion in the report of the matters based on his information in the form and context in which it appears.
Forward-Looking Statement
Certain statements contained in this document constitute forward-looking statements. Forward-looking statements include, but are not limited to, Dart Mining’s current expectations, estimates and projections about the industry in which Dart operates, and beliefs and assumptions regarding Dart’s future performance. Such forward-looking statements are based on a number of estimates and assumptions made by the Company and its consultants in light of experience, current conditions and expectations of future developments which the Company believes are appropriate in the current circumstances. When used in this document, words such as; “anticipate”, “could”, “intends”, “estimate”, “potential”, “plan”, “seeks”, “may”, “should”, and similar expressions are forward-looking statements. Although Dart believes that its expectations presented in these forward-looking statements are reasonable, such statements are subject to known and unknown risks, uncertainties and other factors, which may cause the actual results, achievements and performance of the Company to be materially different from the future results and achievements expressed or implied by such forward-looking statements. Investors are cautioned that forward-looking information is no guarantee of future performance and accordingly, investors are cautioned not to place undue reliance on these forwardlooking statements.
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APPENDIX 1
TENEMENT STATUS
All tenement applications continue to pass through the approvals process with the tenements remaining in good standing as of the 31[st] of January 2021 (Table 1.1 – Figure 7).
Table 1.1. TENEMENT STATUS
| Tenement Number | Name | Tenement Type | Area (km2) Unles specified |
Interest | Location |
|---|---|---|---|---|---|
| MIN006619 | Mt View2 | Mining License | 224 Ha | 100% | NE Victoria |
| EL5315 | Mitta Mitta4 | Exploration Licence | 172 | 100% | NE Victoria |
| EL006016 | Rushworth4 | Exploration Licence | 60 | 100% | Central Victoria |
| EL006277 | Empress | Exploration Licence | 165 | 100% | NE Victoria |
| EL006300 | Eskdale3 | Exploration Licence | 183 | 100% | NE Victoria |
| EL006486 | Mt Creek | Exploration Licence | 190 | 100% | NE Victoria |
| EL006861 | Buckland | Exploration Licence | 414 | 100% | NE Victoria |
| EL007007 | Union | Exploration Licence | 3 | 100% | Central Victoria |
| EL006994 | Wangara | Exploration Licence | 142 | 100% | Central Victoria |
| EL007008 | Buckland West | Exploration Licence | 344 | 100% | NE Victoria |
| EL006764 | Cravensville | EL (Application) | 170 | 100% | NE Victoria |
| EL006865 | Dart | EL (Application) | 567 | 100% | NE Victoria |
| EL006866 | Cudgewa | EL (Application) | 508 | 100% | NE Victoria |
| EL007099 | Sandy Creek | EL (Application) | 437 | 100% | NE Victoria |
| EL007170 | Berringama | EL (Application) | 27 | 100% | NE Victoria |
| EL007430 | Buchan | EL (Application) | 546 | 100% | Gippsland |
| EL007435 | Goonerah | EL (Application) | 587 | 100% | Gippsland |
| EL007425 | Deddick | EL (Application) | 341 | 100% | Gippsland |
| EL007428 | Boebuck | EL (Application) | 355 | 100% | NE Victoria |
| EL007426 | Walwa | EL (Application) | 499 | 100% | NE Victoria |
| RL006615 | Fairley’s2 | Retention License | 340 Ha | 100% | NE Victoria |
| RL006616 | Unicorn1&2 | Retention License | 23,243 Ha | 100% | NE Victoria |
All tenements remain in good standing as of 31[st] January 2021.
NOTE 1: Unicorn Project area subject to a 2% NSR Royalty Agreement with Osisko Gold Royalties Ltd dated 29 April 2013.
NOTE 2: Areas subject to a 1.5% Founders NSR Royalty Agreement. NOTE 3: Areas are subject to a 1.0% NSR Royalty Agreement with Minvest Corporation Pty Ltd (See DTM ASX Release 1 June 2016).
NOTE 4: Areas are subject to a 0.75% Net Smelter Royalty on gold production, payable to Bruce William McLennan.
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Figure 5: Location of Dart Mining’s exploration properties in Northeastern Victoria.
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APPENDIX 2
JORC CODE, 2012 EDITION – TABLE 1
SECTION 1 SAMPLING TECHNIQUES AND DATA
| Criteria | JORC Code Explanation | Commentary | ||
|---|---|---|---|---|
| Sampling | • | Nature and quality of sampling (e.g. cut channels, random chips, or | • | LiDAR data was acquired using a Teledyne Optech sensors. |
| techniques | specific specialised industry standard measurement tools appropriate to | • | LiDAR data was collected across 576km2area in Northeast Victoria. | |
| the minerals under investigation, such as down hole gamma sondes, or | • | Project design vertical accuracy was 0.10m on clear ground at one sigma, with at least four points | ||
| handheld XRF instruments, etc.). These examples should not be taken as | emitted per square metre, with up to eight returns per emitted point. | |||
| limiting the broad meaning of sampling. | • | LiDAR data was georeferenced using CORS base station data. | ||
| • | Include reference to measures taken to ensure sample representivity and | • | Data classification is ICSM Level 2 (ground, non-ground, vegetation and structures, etc). | |
| the appropriate calibration of any measurement tools or systems used. | • | Data classification was manually checked and edited against georeferenced digital | ||
| • | Aspects of the determination of mineralisation that are Material to the | orthophotography and/or intensity imagery acquired as part of this project. | ||
| Public Report. | • | Elevation data will be gathered as WGS ellipsoidal heights and will be adjusted to orthometric | ||
| • | In cases where ‘industry standard’ work has been done this would be | heights by applying a correction to every data point using the relevant geoid model. | ||
| relatively simple (e.g. ‘reverse circulation drilling was used to obtain 1 m | • | LiDAR data was delivered in industry-standard LAS formats, plus a 0.5m ground grid in ASCII | ||
| samples from which 3 kg was pulverised to produce a 30 g charge for | Format and GeoTIFF. | |||
| fire assay’). In other cases more explanation may be required, such as | • | The flying height for aerial data acquisition was approximately 2000m above ground | ||
| 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. |
• • |
Project datum is GDA94. No new Drilling or Geochemical sampling results are presented here. |
||
| Drilling | • | Drill type (e.g. core, reverse circulation, open-hole hammer, rotary air | • | Not applicable: No new drilling results reported. |
| techniques | 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 and chip sample recoveries and | • | Not applicable: No new drilling results reported. |
| recovery | 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. | ||||
| Logging | • | Whether core and chip samples have been geologically and | • | Not applicable: No new drilling results reported. |
| geotechnically logged to a level of detail to support appropriate Mineral | ||||
| Resource estimation, mining studies and metallurgical studies. | ||||
| • | Whether logging isqualitative orquantitative in nature. Core(or |
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| costean, channel, etc.) photography. | ||||
|---|---|---|---|---|
| • | The total length andpercentage of the relevant intersections logged. | |||
| Sub-sampling | • | If core, whether cut or sawn and whether quarter, half or all core taken. | • | Not applicable: No new drilling or surface geochemical sampling results reported. |
| techniques and | • | If non-core, whether riffled, tube sampled, rotary split, etc. and whether | ||
| sample | sampled wet or dry. | |||
| preparation | • | 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 of the assaying and laboratory | • | Not applicable: No new drilling or surface geochemical sampling results reported. |
| assay data and | procedures used and whether the technique is considered partial or | |||
| laboratory | 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 intersections by either independent or | • | Not applicable: No new drilling or surface geochemical sampling results reported. |
| sampling and | alternative company personnel. | |||
| assaying | • | 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. | |||
| Location of | • | Accuracy and quality of surveys used to locate drill holes (collar and | • | LiDAR data was collected across 576km2area in Northeast Victoria. |
| data points | down-hole surveys), trenches, mine workings and other locations used | • | Project design vertical accuracy was 0.10m on clear ground at one sigma, with at least four points | |
| in Mineral Resource estimation. | emitted per square metre, with up to eight returns per emitted point. | |||
| • | Specification of the grid system used. | • | Data classification was manually checked and edited against georeferenced digital | |
| • | Quality and adequacy of topographic control. | orthophotography and/or intensity imagery acquired as part of this project. | ||
| • | Elevation data will be gathered as WGS ellipsoidal heights and will be adjusted to orthometric | |||
| heights by applying a correction to every data point using the relevant geoid model. | ||||
| • | Project datum is GDA94. | |||
| • | All maps, plans and data are on an MGA datum and GDA94 zone 55projection. |
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| Data spacing | • | Data spacing for reporting of Exploration Results. | • | LiDAR points were collected at 0.5m intervals, with a minimum of 4 points per square metre. |
|---|---|---|---|---|
| and | • | Whether the data spacing and distribution is sufficient to establish the | Vertical accuracy is 0.1m. | |
| distribution | degree of geological and grade continuity appropriate for the Mineral | • | At the scale and resolution of the features being identified and resolved, the data spacing is more | |
| Resource and Ore Reserve estimation procedure(s) and classifications | than adequate. | |||
| applied. | • | No sample compositing required with this style of data. | ||
| • | Whether sample compositing has been applied. | |||
| Orientation of | • | Whether the orientation of sampling achieves unbiased sampling of | • | LiDAR data represents the surface area of the area regions surveyed, with X,Y and Z data |
| data in relation | possible structures and the extent to which this is known, considering | reported for across topography of a predefined areas. | ||
| to geological | the deposit type. | • | LiDAR survey areas are completely independent of mineralisation or structural style and are | |
| structure | • | If the relationship between the drilling orientation and the orientation | therefore considered unbiased. | |
| of key mineralised structures is considered to have introduced a | • | No new drilling reported | ||
| sampling bias, this should be assessed and reported if material. | ||||
| Sample | • | The measures taken to ensure sample security. | • | LiDAR data is confidential, and only accessed by Dart Mining representatives and AAM Group. |
| security | ||||
| Audits or | • | The results of any audits or reviews of sampling techniques and data. | • | Airborne LiDAR survey included field test points of survey areas located in accessible areas. |
| reviews | • | LiDAR test points were used to test and validate the achieved accuracy of the LiDAR. | ||
| • | Results of test point comparisons and achieved accuracy reported in the project | |||
| metadata. | ||||
| • | LiDAR data was georeferenced using CORS base station data. | |||
| • | Feld surveywork and data validation was undertaken byAAM Group. |
SECTION 2 REPORTING OF EXPLORATION RESULTS
| Criteria | JORC Code Explanation | Commentary | ||||
|---|---|---|---|---|---|---|
| Mineral | • | Type, reference name/number, location and ownership including agreements | • | All tenements remain in good standing as of 31stJanuary 2021. | ||
| tenement and | or material issues with third parties such as joint ventures, partnerships, | |||||
| land tenure | overriding royalties, native title interests, historical sites, wilderness or national park and environmental settings. |
|||||
| status | • | 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. |
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| Exploration | • | Acknowledgment and appraisal of exploration by other parties. |
|---|---|---|
| done by other parties |
| Tenement Number Name |
Tenement Type | Area (km2) Unless specified |
Interest | Location | ||
|---|---|---|---|---|---|---|
| MIN006619 Mt View2 |
Mining License | 224 Ha | 100% | NE Victoria | ||
| EL5315 Mitta Mitta4 |
Exploration Licence | 172 | 100% | NE Victoria | ||
| EL006016 Rushworth4 |
Exploration Licence | 60 | 100% | Central Victoria | ||
| EL006277 Empress |
Exploration Licence | 165 | 100% | NE Victoria | ||
| EL006300 Eskdale3 |
Exploration Licence | 183 | 100% | NE Victoria | ||
| EL006486 Mt Creek |
Exploration Licence | 190 | 100% | NE Victoria | ||
| EL006861 Buckland |
Exploration Licence | 414 | 100% | NE Victoria | ||
| EL007007 Union |
Exploration Licence | 3 | 100% | Central Victoria | ||
| EL006764 Cravensville |
EL (Application) | 170 | 100% | NE Victoria | ||
| EL006865 Dart |
EL (Application) | 567 | 100% | NE Victoria | ||
| EL006866 Cudgewa |
EL (Application) | 508 | 100% | NE Victoria | ||
| EL006994 Wangara |
EL (Application) | 142 | 100% | Central Victoria | ||
| EL007008 Buckland West |
EL (Application) | 344 | 100% | NE Victoria | ||
| EL007099 Sandy Creek |
EL (Application) | 437 | 100% | NE Victoria | ||
| EL007170 Berringama |
EL (Application) | 27 | 100% | NE Victoria | ||
| EL007430 Buchan |
EL (Application) | 546 | 100% | Gippsland | ||
| EL007435 Goonerah |
EL (Application) | 587 | 100% | Gippsland | ||
| EL007425 Deddick |
EL (Application) | 341 | 100% | Gippsland | ||
| EL007428 Boebuck |
EL (Application) | 355 | 100% | NE Victoria | ||
| EL007426 Walwa |
EL (Application) | 499 | 100% | NE Victoria | ||
| RL006615 Fairley’s2 |
Retention License | 340 Ha | 100% | NE Victoria | ||
| RL006616 Unicorn1&2 |
Retention License | 23,243 Ha | 100% | NE Victoria | ||
| All tenements remain in good standing at 31st December 2021. | ||||||
| NOTE 1:Unicorn Project area subject to a 2% NSR Royalty Agreement with Osisko | Gold Royalties Ltd | |||||
| dated 29 April 2013. | ||||||
| NOTE 2:Areas subject to a 1.5% Founders NSR RoyaltyAgreement. | ||||||
| NOTE 3:Areas are subject to a 1.0% NSR Royalty Agreement with Minvest Corporation Pty Ltd (See | ||||||
| DTM ASX Release 1 June 2016). | ||||||
| NOTE 4:Areas are subject to a 0.75% Net Smelter Royalty on gold production, payable to Bruce | ||||||
| William McLennan. | ||||||
| • | Between 1986 and 1988 the | Granite Flat area was worked | by Meltech Ltd on behalf of Alluvial | |||
| Prospectors Ltd, with soil sampling identifying strong soil anomalies and six diamond drill holes | ||||||
| completed. From 1990 to | 1995, CRA Exploration (now Rio Tinto) completed extensive | |||||
| exploration in the search for | a bulk minable resource. This | included expansion of the soil grid, | ||||
| sampling of 18 costeans, 32 reverse circulation | (RC) and the 13 Diamond drillholes, along with | |||||
| aeromagnetic, ground magnetic and induced polarity surveys | of the site. | In late 1994 | ||||
| Perseverance Mining Ltd entered into a joint-venture | agreement with CRA Exploration, | |||||
| working the Granite Flat prospect from 1996 | to 1999, completing an additional 20 RC drill | |||||
| holes. From 2006 to 2008, Synergy Metals Ltd conducted minor stream sediment and soil | ||||||
| sampling of the site before transferring the license to Glen Wills Gold Mines NL | in 2009. Glen | |||||
| Wills Gold Mines held the license until 2016, completing some minor soil and stream sediment | ||||||
| sampling studies. | ||||||
| • | The Buckland Goldfield has | been explored in thepast to establish the remainingalluvial |
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| potential and limited effort to review reef style historic mines with surface and underground | ||||
|---|---|---|---|---|
| mapping and sampling carried out (EL1394, 1985 – 1988). There has not been any previous | ||||
| assessment of Fairley’s style disseminated gold (shear hosted) within the goldfield. Dart | ||||
| Mining, the first to recognize this style of mineralization, initiated exploration in 2005. | ||||
| • | The Sandy Creek and Tallandoon goldfields have previously been explored to establish the | |||
| remaining alluvial potential and limited effort to review reef style historic mines with surface | ||||
| and underground mapping and sampling carried out ( EL873, BHP Minerals Ltd, 1980-1982; | ||||
| EL1463, Tallangalook Ltd, 1984-1988; EL3574, Exminco, 1993-1994; EL4039, Northern Copper | ||||
| Ltd, 1996-1997; EL4812, Goldsearch Ltd, 2004-2008; EL5241, Golden Deeps Ltd, 2009-2011). | ||||
| All previous exploration efforts have focused on narrow-vein quartz potential, with very little | ||||
| focus on alteration within the granite and minor structural analysis. Dart Mining is the first | ||||
| explorer to recognize the roof pendant style of mineralisation and assess the structural control | ||||
| on the distribution on mineralisation. Tallangalook Ltd and Goldsearch Ltd undertook some | ||||
| basic geological mapping of the Sandy Creek area. Tallangalook Ltd dug & sampled costeans | ||||
| across some workings. Goldsearch Ltd drilled 3 short diamond drill holes, but terminated all | ||||
| before hitting mineralisation. | ||||
| • | No previous commercial exploration for Lithium has occurred in the Dorchap Range or | |||
| adjacent areas. Geological investigations as part of academic research has been reported for | ||||
| the pegmatite dykes by Eagle (2009) and Eagle et al. (2015). Previous exploration in the | ||||
| Dorchap Range to Glen Wills District has focused on historic reef and alluvial style gold and tin | ||||
| workings. | ||||
| Geology | • | Deposit type, geological setting and style of mineralisation. | • | EL006277 is located in the Omeo structural zone of the Lachlan Fold Belt in eastern Victoria. |
| The EL is underlain by metamorphosed Lower Ordovician Pinnak Sandstone and its higher | ||||
| grade metamorphic equivalents in the Omeo Metamorphic Complex to the south. The | ||||
| Banimboola Quartz Monzodiorite (BQM) intruded during the early Devonian and is a highly | ||||
| magnetic I-type composite pluton that has been placed in the Boggy Plain Supersuite (Wyborn, | ||||
| et al., 1987). Aeromagnetic data from the Geo Vic database indicates that the BQM is a | ||||
| composite pluton with a variable magnetic signature. | ||||
| • | The Buckland Goldfield was a traditional narrow vein, high grade (free gold) reef style field | |||
| with a very large alluvial gold footprint. Dart Mining recognized some gold mineralization is | ||||
| related to disseminated sulphides in shears. | ||||
| • | The Sandy Creek and Tallandoon Goldfields are traditional narrow vein, high grade (free gold) | |||
| reef style field with a minor alluvial gold footprint. Dart Mining recognized some gold | ||||
| mineralization is related to disseminated sulphides in altered granites along structurally- | ||||
| controlled intersections within a metasedimentary roof pendant above the Yabba Granite. | ||||
| • | Lithium mineralisation is hosted within highly evolved, late tectonic peraluminous granite | |||
| pegmatites of the complex Lithium-Caesium-Tantalum (LCT) class. These dykes are thought to | ||||
| be distal to a source granitic body and are present as lenticular, discontinuous bodies of | ||||
| variable length and width (up to many hundreds of metres in length, and several tens of metres | ||||
| in width). Lithium mineralisation within the pegmatites is poorly understood at this early | ||||
| exploration stage,but suspected to be spatiallyrelated the zonation within complex |
Page | 14
| pegmatites. Lithium mineralisation observed to date appears to be as spodumene | pegmatites. Lithium mineralisation observed to date appears to be as spodumene | pegmatites. Lithium mineralisation observed to date appears to be as spodumene | pegmatites. Lithium mineralisation observed to date appears to be as spodumene | pegmatites. Lithium mineralisation observed to date appears to be as spodumene | pegmatites. Lithium mineralisation observed to date appears to be as spodumene | pegmatites. Lithium mineralisation observed to date appears to be as spodumene | and | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| petalite, with cassiterite | also evident in some dykes. Tin, and rarely gold is associated | with | |||||||||
| intrusive dykes of the DorchapPegmatite | Dyke Swarm. | ||||||||||
| Drill hole | • | A summary of all information material to the understanding of the exploration | • | Not Applicable: No new drilling data presented here. | |||||||
| Information | results including a tabulation of the following information for all Material drill holes: |
• | All drillhole collar information is presented in previous Dart Mining ASX Announcements Releases. An archive of historic Dart Mining ASX releases is held |
and at: |
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o easting and northing of the drill hole collar |
https://www2.asx.com.au/markets/trade-our-cash-market/announcements.dtm | ||||||||||
o elevation or RL (Reduced Level – elevation above sea level in metres) of the |
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| drill hole collar | |||||||||||
o dip and azimuth of the hole |
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o down hole length and interception depth |
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o hole length. |
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| • | 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. | |||||||||||
| Data | • | In reporting Exploration Results, weighting averaging techniques, maximum | • | Not Applicable: No new drilling or geochemical data presented here. | |||||||
| aggregation methods |
• | and/or 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 |
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| and longer lengths of low grade results, the procedure used for such | |||||||||||
| aggregation should be stated and some typical examples of such aggregations | |||||||||||
| should be shown in detail. | |||||||||||
| • | The assumptions used for any reporting of metal equivalent values should be | ||||||||||
| clearly stated. | |||||||||||
| Relationship | • | These relationships are particularly important in the reporting of Exploration | • | Not Applicable: No new drilling or geochemical data presented here. | |||||||
| between | Results. | ||||||||||
| mineralisation widths and |
• • |
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 |
|||||||||
| intercept | a clear statement to this effect (e.g. ‘down hole length, true width not known’). | ||||||||||
| lengths | |||||||||||
| Diagrams | • | Appropriate maps and sections (with scales) and tabulations of intercepts | • | Not Applicable: No new drilling, | geochemical data or significant discoveries are presented | ||||||
| should be included for any significant discovery being reported These should | here. | ||||||||||
| include, but not be limited to a plan view of drill hole collar locations and | |||||||||||
| appropriate sectional views. | |||||||||||
| Balanced | • | Where comprehensive reporting of all Exploration Results is not practicable, | • | Not applicable: No grade | details expressed or reported in this release. | ||||||
| reporting | representative reporting of both low and high grades and/or widths should be practiced to avoid misleading reporting of Exploration Results. |
Page | 15
| Other | • | Other exploration data, if meaningful and material, should be reported | • | Any other relevant information is discussed in the main body of the report. |
|---|---|---|---|---|
| substantive | including (but not limited to): geological observations; geophysical survey | |||
| exploration data |
results; geochemical survey results; bulk samples – size and method of treatment; metallurgical test results; bulk density, groundwater, geotechnical and rock characteristics; potential deleterious or contaminating substances. |
|||
| Further work | • | The nature and scale of planned further work (e.g. tests for lateral extensions | • | Planned work is discussed in the body of the report and is dependent on future company |
| or depth extensions or large-scale step-out drilling). | direction. | |||
| • | Diagrams clearly highlighting the areas of possible extensions, including the | |||
| main geological interpretations and future drilling areas, provided this | ||||
| information is not commercially sensitive. |
Page | 16