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RB 2015/00005 Opal Exploration Program — Andamooka Opal Fields.
Opal at Andamooka is found in the Bulldog Shale, a stratigraphic unit comprising shallow marine-deposited sediments of Cretaceous age. The opal mostly has formed within a bleached sediment weathering profile developed at the contact of a sandy...-
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Published: 01 Apr 2015
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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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White Hill. Combined first annual/final report to licence full surrender, for the period 19/7/2002 to 9/12/2004.
Reconnaissance geological mapping of existing, previously quite productive opal workings in the White Hill area of the Stuart Range 'Breakaway' country, 100 km south-east of Coober Pedy, was followed by exploratory and infill narrow-hole auger deep...-
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ExpNotes COOBER PEDY: Explanatory Notes COOBER PEDY, SH 53-06.
There is no abstract created for this record.-
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