Willouran Ranges. Progress reports and final report to licence expiry/full surrender, for the period 23/7/1974 to 22/7/1975.
Created: 11 Nov 2024 Revised: 02 Dec 2024

Exploration for possible economic Zambian Copperbelt - type stratabound copper deposits which may have formed within the northern Willouran Ranges has consisted of the acquisition of 1:25,000 scale aerial photographs, the conduct of limited...

Exploration for possible economic Zambian Copperbelt - type stratabound copper deposits which may have formed within the northern Willouran Ranges has consisted of the acquisition of 1:25,000 scale aerial photographs, the conduct of limited regional geological mapping, and making some local detailed investigations of surface mineralisation styles, including petrographic studies made on 43 selected outcrop samples. This work identified a 12 square km prospective area containing mineralised zones up to 20 m wide, that have formed within transgressive onlapping early Adelaidean shallow marine sedimentary sequences in the Callanna, Burra and lower Umberatana groups. Disseminated copper sulphides (pyrite plus lesser chalcopyrite) occur in marbles, impure dolomites, dolomitic siltstones and sandstones with carbonate matrix, but only very little secondary copper staining is associated with this mineralisation. Assaying of rock chip samples taken from the more promising occurrences, principally those found near the historically worked secondary copper showings, returned values of up to 6.4% Cu, but in general the mineralisation tenor appeared weak, and Dampier Mining concluded that it did not represent a target warranting further work, although the company intends to continue its copper search elsewhere within the Flinders Ranges. An estimated best localised concentration of copper mineralisation present on the licence area is approximately 100,000 tons of 1.4% Cu existing within oxidised horizons at the Breadon Hill prospect.

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About this record

Record No mesac11408
Topic Geoscientific Information
Type of Resource Document
Category Type
Document Type Mineral Company Report - Mineral Exploration
Contributor
Sponsor
Tenement EL 143
Tenement Holder Dampier Mining Co. Ltd
Operator The Broken Hill Pty Co. Ltd
Geological Province Adelaide Geosyncline
Mine Name Callanna mine;Rook mine;Dunn's mine;West Willouran copper workings;Horshoe prospect
Stratigraphy
Commodity
Notes
Geographic Locality: Willouran Ranges;Breadon Hill;Douglas Gully;Willouran Hill;Tarlton Knob
Doc No: Env 02436

Geographic Locality: Willouran Ranges;Breadon Hill;Douglas Gully;Willouran Hill;Tarlton Knob Doc No: Env 02436

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/mesac11408
Citation Bischoff, B.G.R.;Carthew, S.J.;Meyer, H.C.;Lemon, N.M. Willouran Ranges. Progress reports and final report to licence expiry/full surrender, for the period 23/7/1974 to 22/7/1975. Mineral Company Report - Mineral Exploration
https://pid.sarig.sa.gov.au/document/mesac11408

Technical information

Status
Maintenance and Update Frequency
Geographic Reference GDA2020 (EPSG:7844)
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Lineage