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RI 056 Geology of the Coober Pedy Precious Stones Field Results of Investigations, 1981-86
The Coober Pedy Opal Fields, since their discovery in 1915, have been the largest producer of precious opal in the world, with the estimated value of production over the period 1978-86 averaging $25 million per year. Mining is now done mainly by...-
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RB 2015/00007 Coober Pedy Precious Stones Field 40Ar/39Ar geochronology of alunite and opal formation.
Precious opal in South Australia occurs near the base of the weathered profile developed in Early Cretaceous host marine clastic sediments. It is associated with the supergene minerals alunite, kaolinite, gypsum and iron oxides, that are variously...-
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Published: 01 Apr 2015
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RB 2012/00004 MARREE, South Australia, [geological map] sheet SH54-5. South Australia. Geological Survey. 1:250 000 Series - Explanatory Notes.
The MARREE mapsheet area includes the south-western portion of the Strzelecki Desert plus parts of the Tirari Desert, north-western Flinders Ranges and north-eastern Willouran Ranges, between latitudes 29 to 30 degrees S and longitudes 138 to 139...-
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Published: 01 Apr 2012
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ExpNotes MARREE: Explanatory Notes MARREE
A new generation, second edition MARREE 1:250 000 scale geological map and its explanatory notes have been published. These documents represent the conclusion of the Geological Survey of South Australia's latest geological mapping program (1993 to...-
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