There is no abstract created for this record

There is no abstract created for this record

There is no abstract created for this record

A comprehensive survey of the opal mining industry in South Australia is at present being undertaken. Because of the peculiar nature and conditions associated with the opal industry it was thought that an inspection of the important opal field at...

There is no abstract created for this record

There is no abstract created for this record

At least 90% of the phosphate was leached with either nitric, hydrochloric or sulphuric acids. Products unsuitable for the surface preparation of steel. The most promising outlet would be for upgrading the P2O5 content of super phosphate fertilizer.

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A brief inspection of the workings, situated 120 miles west-northwest of Oodnadatta, showed that both precious and common opal occur in arenaceous sediments which have been affected by the Tertiary laterite forming process. Mining and living...

The location, mining history and geological settings of opal deposits located in far northern South Australia (Mintabie, Granite Downs, Lambina, Earina Hill and Welbourn Hill) are briefly described. The prospectivity of Tertiary lateritic sediments...

Mapping of the Coober Pedy Opalfield has shown that opal occurrence, although erratic, is not entirely unpredictable. Several groups of workings are present in an area of about 150 square miles. The host rock is a distinctive pink and white...

Common opal occurs in bleached (pallid zone) Precambrian sediments beneath a porcellanite capping. The workings are not extensive, and no precious opal is known to have been found. The deposit is significant because the opal is associated with the...

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This prospect, which is owned by Mr. Bray of Olary, was visited with Mr. Bray on 22nd September, 1959. The purpose of the visit was a request from Mr. Bray for geological advice to help him determine which direction to begin working the deposit. The...

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There is no abstract created for this record

Flotation of beryl-bearing pegmatites produced high grade beryl concentrates; this is covered more fully in a separate report RD104. This report deals with the recovery of subsidiary muscovite, quartz and potassic felspar by-products which however,...

Beryllium-bearing pegmatites were beneficiated by flotation. Market grade concentrates were produced with high recovery by stage flotation of 1.46 per cent. BeO feed, but could not be obtained from 0.16 per cent. BeO feed. Direct flotation of the...

There is no abstract created for this record

There is no abstract created for this record