Data release - as updated [made at SA Director of Mines' discretion] : the Tarcoola and Theseus Projects. Joint annual reports for the period 1/1/2015 to 31/12/2018.
Published: 21 Feb 1919 Created: 12 Nov 2024 Revised: 12 Nov 2024

During the fourth year of project licences' joint reporting, for the Theseus Project, Endeavour undertook further RC and diamond core drilling at the Minos prospect on EL 5280, and did detailed auger calcrete geochemical sampling over the Lake...

During the fourth year of project licences' joint reporting, for the Theseus Project, Endeavour undertook further RC and diamond core drilling at the Minos prospect on EL 5280, and did detailed auger calcrete geochemical sampling over the Lake Labyrinth Shear Zone (LLSZ) along strike from Minos. The drilling of 13 RC only holes for 1510 m during March-April 2015, plus 236 m of precollars and 729.7 m of HQ3 or NQ2 diamond cored tails in 6 other holes during July-August 2015, was conducted on 6 drill sections including 2 new infill sections. Drilling on the two infill sections completed the 100 m drill section spacing along the 600 m of strike of the mineralising system. Best results included: - 34 m @ 6.00 g/t Au from 108 m in vertical hole THRC-060 (i.e. down the dip of mineralisation); - 25 m @ 2.27 g/t Au in 60 degrees inclined hole THRC-052 from 117 m, including 10 m @ 4.64 g/t Au; - 23 m @ 2.02 g/t Au in 60 degrees inclined hole THRC-063 from 78 m, including 8 m @ 4.47 g/t Au. Eight other holes also encountered notably strong gold-mineralised intercepts. Endeavour's general geological understanding of the gold occurrence was not markedly changed by now having access to drill cores that allowed better inspection of some key lithologies, alteration assemblages, structural textures, mineralisation styles and vein styles. It was observed for the first time that trace to 5% pyrite mineralisation is associated with gold mineralisation and is commonly disseminated through altered lithologies with lesser fine fracture styles. A range of quartz and/or calcite veins and fractures were observed. A variety of 1-40 mm “banded” quartz-carbonate ± pyrite±galena±sphalerite is locally associated with higher gold grades. The prospective but as yet untested western part of the shear zone was now interpreted to continue onto the company's adjoining ELA 2015/69 Gibber Plains. In April 2015, using a vehicle mounted auger rig, 240 x 1 kg calcrete samples were collected at 50 m intervals on lines 200 m and 500 m apart, and were laboratory assayed for gold only. Results were relatively subdued, with a maximum of 71 ppb Au returned. This higher value confirmed the existing elevated gold anomaly which had been returned from MIM's previous calcrete sampling done adjacent to the southern edge of the Minos prospect. The gold-in-calcrete response over Minos was patchy but included results of up to 27 ppb Au. The north-westerly extension of the LLSZ from Minos returned local subtle, but coherent, gold values in the 5-10 ppb Au range which may reflect increasing depth of cover, but were still regarded by Endeavour as significant and worthy of drill testing. During the fifth year of project licences' joint reporting, no work was done. During Year 6 of the project limited field work was completed over the tenement, with 3 rock chip samples collected from the Boomerang Prospect on EL 5281 for assaying, and the re-assay of some 1970s historic diamond drillholes at the Kenella Rocks Prospect on EL 5989. Limited desktop studies were also undertaken. During Year 7 of the project no field work was undertaken in the project area and therefore no technical report was submitted.

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About this record

Record No mesac29280
Topic Geoscientific Information
Type of Resource Document
Category Type
Document Type Mineral Company Report - Mineral Exploration
Contributor
Sponsor
Tenement
Tenement Holder Endeavour Copper Gold Pty Ltd;Wilgena Resources Ltd
Operator Endeavour Discoveries Ltd
Geological Province
Mine Name Minos prospect
Stratigraphy
Commodity
Notes
Notes: This release to the public of the subject mineral exploration data, namely, company data which was acquired more than 5 years ago, is being done by DMITRE in accord with the provisions of Section 77D of the Mining Act 1971 and Regulation 88...

Notes: This release to the public of the subject mineral exploration data, namely, company data which was acquired more than 5 years ago, is being done by DMITRE in accord with the provisions of Section 77D of the Mining Act 1971 and Regulation 88 of the Mining Regulations 2011. Geographic Locality: Deception Hill;Lake Harris;Yellabinna Regional Reserve;Wilgena Station;Malbooma;Yerda Station;Black Camp Hill;Coondambo;Pinding;Kingoonya;Pompeter Rocks;Bulpara Hill;New Year Hill;Hopeful Hill;Lake Labyrinth Shear Zone Doc No: Env 12300 Drillhole: THRC051 - THRC063;(360743 - 360753);THDD056;(325497);THDD058;(325498);THDD064 - THDD067;(325499 - 325502)

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Language English
Metadata Standard ISO 19115-3

Citations

Use constraints License
License Creative Commons Attribution 4.0
Persistent identifier https://pid.sarig.sa.gov.au/document/mesac29280
Citation Price, A.T.;Twining, M.;McKinnon-Matthews, J.;Ferris, G. 1919. Data release - as updated [made at SA Director of Mines' discretion] : the Tarcoola and Theseus Projects. Joint annual reports for the period 1/1/2015 to 31/12/2018. Mineral Company Report - Mineral Exploration
https://pid.sarig.sa.gov.au/document/mesac29280

Technical information

Status
Maintenance and Update Frequency
Geographic Reference GDA2020 (EPSG:7844)
Geo bounding box {"type":"Polygon","coordinates":[[[133.5,-31.5],[135.5,-31.5],[135.5,-30.5],[133.5,-30.5],[133.5,-31.5]]]}
Purpose

                    
                    

                    
                  
Lineage