A large deposit of gypsum has recently been discovered near Streaky Bay and the estimated costs of mining 1,000 tons per week are here discussed. The deposit was inspected on the 15th and 16th February, 1960.

Following preliminary investigations into the occurrence of gypsum in a deposit of probable economic importance at "Salt Lake", Hundred Haines, Kangaroo Island, by D. King, Geologist, and the writer during March 1955, drilling operations were carried...

Samples were received from a gypsum deposit on Kangaroo Island (Hundred of Haines). Initial test work indicates that clean gypsum can be obtained by washing and that plaster can be made from the calcined washed gypsum. The colour of the plaster...

A programme of 39 hand auger holes was carried out for CSR Limited, of Sydney, to define a reported bed of gypsum occuring below the level of the base of the gypsum dunes. The grade of gypsum found was generally lower than that in the dunes and is...

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Contained in a report No. 42/117 July 3rd 1956 DM1139/54 relating to the drilling and testing of this deposit the writer submitted tentative proposals and estimated costa for the mining of gypsum, subject to certain physical characterisitcs of the...

Gypsum deposits occurring at Diamond Lake are at present being worked at the rate of 200 tons per week by Mr. C.D. Bartsch of Nuriootpa. The area of the deposits is private property owned by Mr. E.W. Wilson of Whitwarta, with minerals alienated from...

At the request of Waratah Gypsum Pty. Ltd. bulk sampling of a 5000 ton shipment of Gypsum for export overseas from the Lake Macdonnell deposit, was carried out by Department of Mines officers, Messrs. C. R. Sandman, Metallurgist, and C. M. Willington,...

Scout drilling undertaken by hand, on a number of salt lakes in the hundred of Haines, and isolated lakes in the hundreds of Newland and Dudley on Kangaroo Island, indicates that no gypsum occurs in these lakes. Without exception, mud and clay overlie...

A survey of gypsum-bearing lakes on Eyre Peninsula has indicated a promising deposit about 10 miles SSE of Streaky Bay. Other deposits examined, namely those near Charra, Point De Mole, Lake Yaninee, Kopi, Lake Malata and Lake Greenly suffer from one...

Three small areas (total about 0.8 sq. miles) outside existing gypsum leases near Lake MacDonnell have been tested by Proline auger and found to contain gypsum reserves estimated at about 2,850,000 tons. It is estimated that 29,000,000 tons of gypsum...

A short survey of gypsum deposits at Lake Yaninee and Kopi indicates that the best gypsum is at Kopi. Here a large dune immediately west of the rail siding contains an estimated minimum of 44,000 tons. The dune is composed largely of pale brown seed...

Ingham Plaster Co. Ltd. in which the Colonial Sugar Refining Co. Ltd. has a major interest has requested advice on the method to be adopted in mining 1,000 tons per week of rock gypsum from the deposits in the Hundred of Haines, Kangaroo Island.

On March 18 - 19th, 1958, samples were taken by means of a post hole auger from the floor of a saline lake situated in Hundred Melville, sections 72,73, 74 and 78 3½ miles by road west south west of Yorketown on Southern Yorke Peninsula. The samples...

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The Coober Pedy Precious Stones Field is the largest producer of precious opal in the world. The opal is the product of weathering processes and is localised within the weathered profile. It occurs in early Cretaceous marine claystone of the Bulldog...

Gypsum reserves in Snow Lake and Spider Lake within Innes National Park on southern Yorke Peninsula have been delineated by core sampling and auger drilling. Snow Lake contains indicated geological reserves of 2.8 million tonnes of gypsum to an...

Based on 112 drill holes in 1959 and 32 in 1969, proved reserves were recalculated as 44 million tonnes in Lake Purdilla, 1 metre or more thick at average grade of 88.4% gypsum and 6 million tonnes in Lake Toorna, 1 metre or more thick at average...

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.

The area mapped includes most of the area south of Lake Frome between the Flinders and Barrier Ranges, and part of the Olary Hills. Basin nomenclature has been revised for the Cainozoic. Drilling by CSR, Minad and Petromin NL has been used in the...