Coonalpyn (part of the Coonalpyn Joint Venture Project). Annual reports to licence expiry/full surrender for the period 16/10/2006 to 15/10/2008.
Published: 13 Nov 1908 Created: 11 Nov 2024 Revised: 11 Nov 2024

To investigate the possible Cu-Ni-PGE mineral sulphide mineralisation potential of a known buried mafic / ultramafic layered igneous intrusive complex situated near Ki Ki in the upper South-East, as well as exploring for base metal mineralisation...

To investigate the possible Cu-Ni-PGE mineral sulphide mineralisation potential of a known buried mafic / ultramafic layered igneous intrusive complex situated near Ki Ki in the upper South-East, as well as exploring for base metal mineralisation elsewhere within the tenement, the licensee and its joint venture partners variously undertook reprocessing and modelling / interpretation of existing aeromagnetic data, rotary mud/diamond core drilling (5 holes for a total penetration of 1284.3 m, including 693.1 m cored), aircore drilling (2 unsuccessful holes for 134 m - neither was able to reach basement beneath sandy sediments), geochemical assaying and petrological studies of drill cores, and also acquired and processed / interpreted a gravity survey of 480 stations at 100 m spacing on lines 400 m apart. The gravity results defined a large regional anomaly that extends into the adjacent EL 3295, which contains the nickel-mineralised drillhole KK02 completed previously on the Ki Ki prospect. Accordingly, the subject drilling on EL 3635 targeted both this gravity anomaly thought to be associated with the nickel mineralisation, and also positively and negatively polarised magnetic targets for base metal mineralisation. The geophysical anomalies were explained by lithological and mineralogical variations in the buried bedrock, and no economically significant nickel or base metal mineralisation was encountered. It would appear that, on a semi-regional scale, the Ki Ki gravity anomaly can be explained by the presence of sheared ultramafic rock types. Drillholes KMD-07-01 and KMD-07-03, drilled on a negatively polarised magnetic anomaly, intersected a diorite to quartz-diorite intrusive rock type containing variable disseminated pyrrhotite and minor associated chalcopyrite with elevated nickel contents. Assaying of mineralised drill core samples returned best results of 728 ppm Cu and 522 ppm Ni from the depth interval 258-259 m in KMD-07-01, and 829 ppm Cu and 698 ppm Ni from the depth interval 105-106 m in KMD-07-03.

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About this record

Record No mesac21896
Topic Geoscientific Information
Type of Resource Document
Category Type
Document Type Mineral Company Report - Mineral Exploration
Contributor Pontifex and Associates Pty Ltd
Sponsor Red Metal Ltd
Tenement EL 3635
Tenement Holder Red Metal Ltd;Vintage Exploration and Mining Pty Ltd
Operator Red Metal Ltd
Geological Province
Mine Name
Stratigraphy
Commodity
Notes
Geographic Locality: Upper South-East;Coonalpyn;Coomandook;Mount Boothby;2006 Ki Ki Detail Gravity Survey
Doc No: Env 11492
Drillhole: KKD-07-03;KKD-07-04;KMA-07-01;KMA-07-02;KMD-07-01;KMD-07-02;KMD-07-03
Drillhole Unit No: 6826 01369;THROUGH;6836...

Geographic Locality: Upper South-East;Coonalpyn;Coomandook;Mount Boothby;2006 Ki Ki Detail Gravity Survey Doc No: Env 11492 Drillhole: KKD-07-03;KKD-07-04;KMA-07-01;KMA-07-02;KMD-07-01;KMD-07-02;KMD-07-03 Drillhole Unit No: 6826 01369;THROUGH;6836 01375

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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/mesac21896
Citation McKay, G.;Pontifex, I.R. 1908. Coonalpyn (part of the Coonalpyn Joint Venture Project). Annual reports to licence expiry/full surrender for the period 16/10/2006 to 15/10/2008. Mineral Company Report - Mineral Exploration
https://pid.sarig.sa.gov.au/document/mesac21896

Technical information

Status
Maintenance and Update Frequency
Geographic Reference GDA2020 (EPSG:7844)
Geo bounding box {"type":"Polygon","coordinates":[[[139.5,-36],[140,-36],[140,-35],[139.5,-35],[139.5,-36]]]}
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