Database name: |
World Fe-oxide+/-Cu-Au-U (IOCG) deposits |
Compilers: |
Sunil S. Gandhi |
Release date: |
2015-03-04 |
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Deposit name(s): |
Portia-North Portia (occurrence name) |
Political location(s): |
Australia; Province or state: South Australia; Nearest community: Adelaide |
Deposit clan (type): |
Cloncurry-type |
Deposit status: |
drilled prospect |
Geologic province: |
Curnamona |
Geologic district: |
Benagerie Ridge |
Commodities: |
Cu; Au |
Mineralization styles: |
vein(s); replacement; fracture-fillings |
Geological ages: |
Late Paleoproterozoic (host rocks) Late Paleoproterozoic (mineralization) |
Host rocks: |
(1) metamorphic; metasedimentary schist (albitized domain) |
Metallogenic signatures: |
Fe-Cu-Au-F-P-V-Zn-Se-Mo-Ag-Te-Ba-REE-Pb-Bi |
Alteration signatures: |
albitization; What was altered: sedimentary rocks; Component: post-metamorphic regional alteration phyllitization; Component: high grade Cu-Au zones |
Radiometric ages: |
Object dated: host rocks; Age - Ma: 1,703; +6; -6; Dating method: U-Pb Shrimp; Concentrate: zircon; Source rock: Tuff; Event dated: host rock; Interpretive comment: Same age as parts of the Willyama Supergroup, Broken Hill District and Olary Domain
Object dated: alteration signature; Age - Ma: 1,630; Dating method: U-Pb Shrimp; Concentrate: monazite; Source rock: albitite; Event dated: alteration; Interpretive comment: This is very approximate, confirming pre-1600 Ma age of regional albitization; Reference: Teale, G. S.; Fanning, C. M., 2000: The Portia - North Portia Cu-Au(-Mo) Prospect, South Australia: Timing of Mineralisation, Albitisation and Origin of Ore Fluid; Section Australasia, in Hydrothermal Iron Oxide Copper-Gold and Related Deposits: A Global Perspective, Volume 1, Edited by Porter, T. M., Australian Mineral Foundation, Adelaide, Australia, PGC Publishing, Adelaide, 349 p, p. 137 - 148 |
Qualified comments: |
(Applies to: miscellaneous) OZMIN 2013 refers to eluvial gold at the basement - Tertiary unconformity |
Samples data: |
(1) Sample type: diamond drill hole intersection; Sample dimensions: 76 metresCommodities and grades in order of importance: | Cu: 1.06 percent Au: 1.21 grams/metric ton | Reference number: Teale, G. S.; Fanning, C. M., 2000: The Portia - North Portia Cu-Au(-Mo) Prospect, South Australia: Timing of Mineralisation, Albitisation and Origin of Ore Fluid; Section Australasia, in Hydrothermal Iron Oxide Copper-Gold and Related Deposits: A Global Perspective, Volume 1, Edited by Porter, T. M., Australian Mineral Foundation, Adelaide, Australia, PGC Publishing, Adelaide, 349 p, p. 137 - 148 (2) Sample type: diamond drill hole intersection; Sample dimensions: 53 metresCommodities and grades in order of importance: | Cu: 0.79 percent Au: 0.59 grams/metric ton | Reference number: Teale, G. S.; Fanning, C. M., 2000: The Portia - North Portia Cu-Au(-Mo) Prospect, South Australia: Timing of Mineralisation, Albitisation and Origin of Ore Fluid; Section Australasia, in Hydrothermal Iron Oxide Copper-Gold and Related Deposits: A Global Perspective, Volume 1, Edited by Porter, T. M., Australian Mineral Foundation, Adelaide, Australia, PGC Publishing, Adelaide, 349 p, p. 137 - 148 |
References: |
Anonymous, 2013 |
OZMIN |
Australian Geological Surveys Organization, Australia National Datasets, Internet |
Teale, G. S.; Fanning, C. M., 2000 |
The Portia - North Portia Cu-Au(-Mo) Prospect, South Australia: Timing of Mineralisation, Albitisation and Origin of Ore Fluid |
Section Australasia, in Hydrothermal Iron Oxide Copper-Gold and Related Deposits: A Global Perspective, Volume 1, Edited by Porter, T. M., Australian Mineral Foundation, Adelaide, Australia, PGC Publishing, Adelaide, 349 p, p. 137 - 148 |
Williams, P. J.; Skirrow, R. G., 2000 |
Overview of Iron Oxide-Copper-Gold Deposits in the Curnamona Province and Cloncurry District (Eastern Mount Isa Block), Australia |
Section Australasia, in Hydrothermal Iron Oxide Copper-Gold and Related Deposits: A Global Perspective, Volume 1, Edited by Porter, T. M., Australian Mineral Foundation, Adelaide, Australia, PGC Publishing, Adelaide, 349 p, p. 105 - 122 |
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