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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 80/00038 Vesuvius opal diggings.
Small quantities were mined from 1977 to 1978. The opal infills joints in leached and weathered Cretaceous shale. Considerable potential exists for further small finds of opal.-
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Published: 01 May 1980
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RB 83/00007 Coober Pedy Opalfields - Results of the subsidised exploration programme, 1981.
221 shafts were drilled. Precious opal or potch was found in 11 shafts and good sandstone prospective for opal in 34 shafts. A new field, Southern Cross, was established subsequent to the discovery of potch in subsidised shaft 85.-
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Published: 01 Mar 1983
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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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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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Wittakilla. Progress reports to licence surrender for the period 17/10/1977 to 16/10/1978.
As part of a regional search for buried Olympic Dam - type base metal deposits, Western Mining attempted to test an isolated but sharply defined aeromagnetic anomaly noted just to the east of the southern end of Lake Callabonna. After first acquiring...-
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Murnpeowie. Progress reports and final report to licence expiry/full surrender, for the period 15/1/1970 to 9/2/1973.
Greenfields uranium exploration of Mesozoic and Cainozoic sediments was carried out over an interpreted synclinal feature on Murnpeowie Station, in an area located between the Mount Babbage Block and the Willouran Ranges. The target was possible...-
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Northern Willouran Ranges. Progress reports to licence expiry/renewal for the period 12/3/1970 to 11/9/1971.
Exploration for possible economic stratabound/stratiform copper, zinc and vanadium mineralisation occurring within a large area located south-west of Marree has consisted of geological field mapping and regional stream sediment sampling (3470...-
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Published: 10 Jun 1971
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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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