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RB 80/00026 Opal in South Australia.
Enlarged written version of a talk on the geology of opal, its occurrence and mining methods prepared for public presentation.-
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Published: 01 May 1980
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RB 84/00047 Origin and formation of matrix opal from Andamooka, South Australia.
Two specimens were probably formed by partial dissolution of Andamooka Limestone erratics within Cretaceous marine sandy clay, followed by replacement of the remaining carbonate rock by fine grained silica together with growth and deposition of silica...-
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Published: 01 Jul 1984
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RB 79/00006 Opal at the Stuart Creek, Charlie Swamp and Yarrawurta Cliff diggings. Report no. 12 on geological investigations and Calweld drilling of the Stuart Creek Precious Stones Field.
Small quantities of precious opal have been mined from sediments of the Early Cretaceous Marree Formation at Stuart Creek, 50 km north of Andamooka. These sediments appear to have been unaffected by the Early Tertiary deep weathering and bleaching...-
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Published: 01 Jan 1979
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RI 051 Andamooka Opal Fields The Geology of the Precious Stones Field and The Results of the Subsidised Mining Program
Since discovery of the opal field in 1930, Andamooka, 640 km by road north of Adelaide, has been a major world producer of precious opal. All workable opal at Andamooka has been found in the Marree Formation, a sequence of marine sediments of...-
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Tertiary geology of the Coward Cliff area, between Lake Eyre and Lake Torrens, South Australia.
There is no abstract created for this record-
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Published: 01 Jan 1979
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Geology of the Stuart Creek - Charlie Swamp area, northern South Australia.
As a B.Sc. Honours project with the Geology Department of the University of Adelaide, which was sponsored by the South Australian Department of Mines and Energy, the author during 1978 carried out geological mapping of a nearly 400 square km area...-
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