A quarry site located near Lowbank on the River Murray, 7 miles east of Waikerie, has been geologically mapped and partly explored by drilling 14 vertical diamond holes with a total depth penetration of 702 feet. Marine sandy limestone and calcareous...

Between September 1963 and February 1964 a programme of diamond drilling and surface sampling was carried out at the abandoned Paull Consolidated mine and its environs, located approximately 18 miles north-east of Leigh Creek. Spectrographic analyses...

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Detailed geological mapping has identified a metamorphosed iron formation though to be equivalent to the Middleback Group of Eyre Peninsula. Four diamond drillholes have given complete intersections of the Mount Christie, Fingerpost Hill and George...

The Clare 1-mile mapsheet area is situated about 70 miles north of Adelaide, South Australia, in partly hilly agricultural and pastoral country. The oldest Adelaide System (Proterozoic) rocks are the phyllites, quartzites and dolomites of the River...

Three relatively deep bores, drilled recently on the northern Adelaide Plains in the Hundred of Port Gawler, about 20 miles north of Adelaide, have intersected useful complementary sections of the Cainozoic succession, ranging from 560 feet to 1148...

10 miles north-west of Tumby Bay, a syncline of jaspilite, with a shallow southerly plunge, could contain 8-13 million tons of magnetic iron ore per vertical 100 feet. Unweathered jaspilite with magnetite occurs. Assessment of the potential of the...

Near horizontally bedded Upper Eocene sediments comprising Blanche Point Marls, Tortachilla Limestone and South Maslin Sands, have been test bored at Hackham in the Noarlunga Basin, in the search for a bentonite - type clay deposit which might provide...

Rocks in the Flinders and Hutchinson groups are exposed sporadically around the coast of Eyre Peninsula. Reported occurrences of molybdenite and scheelite in these rock types were investigated. No significant rare metal minerals were found in the...

Irregular oxidised orebodies up to about 3 feet thick, containing copper carbonates, quartz, sphaerocobaltite (cobalt carbonate) and wad (hydrated manganese oxide), occupy both shear zones aligned parallel with bedding, and crush zones developed...

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...

Copper carbonates are sporadically distributed throughout steeply dipping mica schist in a zone up to about 70 ft. wide. The host rocks have been regarded as overturned metamorphosed Burra Group (Torrensian) beds resting on the Aldgate Sandstone...

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...

A possible quarrying site for concrete aggregate, within Upper Cambrian quartzites exposed in a cliff located half a mile downstream from the Middle River Dam site, was previously described briefly in the progress report on Middle River Dam dated...

In the Sir Joseph Banks Group of southern Spencer Gulf offshore islands, outcropping Archaean arenaceous, arkosic and calcareous sedimentary rocks appear to have been folded and granitised prior to the deposition of the Adelaidean System sedimentary...

Further electromagnetic and induced polarization work has been carried out in the Tarcoola Blocks mine and Brown Hill areas at Tarcoola to extend and substantiate previous investigations (ref. RB 59/128, 23 November 1964). The latest results...

Steeply east-dipping jaspilite beds, with a thickness of between 200 feet and 400 feet, could contain 9 to 22 million tons per 100 vertical feet of coarse-grained, slightly magnetic iron oxides. Surface samples average 39.1 % acid soluble Fe....

Supplementary gravimeter traverses have been run over the strong Bungalow aeromagnetic anomaly to further define it. Earlier in the year a percussion drilling programme was carried out over the same area. In the light of both sets of results it is...

This report lists the results of acid leaching tests on Mary Kathleen ore. Attempts to control the silica concentration of the liquor have been made by leaching with and without additives and by processing the diluted leach liquors.

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,...