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RB 86/00067 Reappraisal of jade reserves. Cowell Jade Province, Eyre Peninsula, South Australia.
Published: 01 Jan 1986 Created: 07 Nov 2024 Revised: 07 Nov 2024
Author: Barnes, L.C.;Flint, D.J.;Dubowski, E.A.

Inferred reserves of 8 000 tonnes of jade per vertical metre are contained within 113 jade lenses. Down to an economic mining depth of 10 metres, 80 000 tonnes of jade are inferred with 60 000 tonnes recoverable. 82 jade outcrops on 20 mineral...

Inferred reserves of 8 000 tonnes of jade per vertical metre are contained within 113 jade lenses. Down to an economic mining depth of 10 metres, 80 000 tonnes of jade are inferred with 60 000 tonnes recoverable. 82 jade outcrops on 20 mineral leases held by Cowell Jade Pty Ltd contain inferred reserves of 73 000 tonnes down to 10 metres, with 55 000 tonnes recoverable, valued at $220 million. 3 leases by Smiths over 6 jade outcrops contain 2 000 tonnes down to 10 metres, with 1 500 tonnes recoverable, valued at $6 million. Colours range from yellow green, through dark green to black. Cowell is probably the only commercial source of high quality black jade in the world. The jade is easily polished. Colour variation, rind patterns and inclusions result in over 40 marketable varieties. Small quantities of translucent green, yellow and near white jade have been found and larger quantities of these, and other colours will probably be found at Cowell as mining continues.

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About this record

Record No rb8600067
Topic Geoscientific Information
Type of Resource Document
Category Type
Document Type Departmental Publication - Geological Survey Geoscience Publication
Contributor
Sponsor
Tenement
Tenement Holder
Operator
Geological Province
    Mine Name Cowell Jade Province
    Stratigraphy
    Commodity gemstone
    Notes 
    Notes: Published in Mineral Resources Review, South Australia, 156, p: 88-93.
Geographic Locality: Mount Geharty;Minbrie Range;Hd Minbrie, secn 116, secn 123
Doc No: RB 86/00067
    Notes: Published in Mineral Resources Review, South Australia, 156, p: 88-93.
Geographic Locality: Mount Geharty;Minbrie Range;Hd Minbrie, secn 116, secn 123
Doc No: RB 86/00067
    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/rb8600067
    Citation Barnes, L.C.;Flint, D.J.;Dubowski, E.A. 1986. RB 86/00067 Reappraisal of jade reserves. Cowell Jade Province, Eyre Peninsula, South Australia. Departmental Publication - Geological Survey Geoscience Publication. Government of South Australia.
    https://pid.sarig.sa.gov.au/document/rb8600067

    Technical information

    Status
    Maintenance and Update Frequency
    Geographic Reference GDA2020 (EPSG:7844)
    Geo bounding box {"type":"Polygon","coordinates":[[[136.5,-34],[137,-34],[137,-33],[136.5,-33],[136.5,-34]]]}
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