A minimum metamorphic age of greater than 2400 Ma is inferred for two banded iron formations outcropping within the TARCOOLA 1:250 000 mapsheet area. The age obtained is considerably greater than that of the mid-Proterozoic Middleback Group, with...

History from 1884 when silver, lead and copper were discovered in the Rapid Bay area.

Specimens from the Mt Grainger Goldfield include quartzites, sandstones in which kaolinite is believed to represent earlier feldspar, siltstones, shales, diamictites of probable glaciogene origin, granitoids and andesites. Low to moderate temperature...

Large ferruginous concretions in the South Maslin Sand contain attractive botryoidal masses of iron oxides. They are prized as mineral specimens. Genesis of the concretions probably resulted from dissolution and subsequent precipitation of iron...

Thin section descriptions from 3 drill holes with emphasis on origin of the gold mineralization. Mineralized sediments include shale, siltstone and sandstone, with early iron mineralization.

Petrology of 174 rocks indicate that 5 deformation phases (D1 - D5) are present within this dominantly schistose domain. Describes many samples which contain gneissosity, schistosity or crenulation.

A strikingly attractive red and black banded iron formation of Proterozoic age outcrops at Wilgena Hill, 14 km east of Tarcoola. The iron formation is fine-grained, finely laminated and polishes to a high finish. Reserves of banded iron formation...

Six wells exploiting the lower (confined) portion of the Gambier Limestone aquifer currently provide groundwater for Millicent?s reticulated water supply. Four of the six wells could be substantially upgraded in well yield by equipping them with...

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Gravity and detailed aeromagnetic data, as summarised in the Metallic Exploration Index Series for CURNAMONA and OLARY, are interpreted. Other detailed geophysical and geological work is incorporated. The interpretation aims to define the areal...

MESA was contracted to find a groundwater supply for the Oak Valley Community. It was identified that the water's salinity was required to be less than 40,000 mg/l for desalination, and that the yield needed was 1 l/s. The investigation included a...

Mount Compass is an important sand resource area. The ACI Glenshera sand pit, which supplies Australia's largest container glass plant at West Croydon with over 100 000 tonnes per year of glass sand, is also a major source of foundry sand. Four...

As part of the South Australian Steel and Energy Project, MESA targeted Palaeoproterozoic banded iron formation (BIF) at Hawks Nest as a possible iron ore resource. Detailed ground magnetic, gravity and drilling programmes identified seven deposits;...

As part of the South Australian Steel and Energy Project, Mines and Energy South Australia completed an exploration programme for iron ore at the Hawks Nest prospect during 1995 and 1996. Along with detailed magnetic and gravity surveys, the work...

As part of the South Australian Steel and Energy Project, MESA has targeted Palaeoproterozoic banded iron formation (BIF) rocks at Giffen Well prospect as a possible iron ore resource. Ground magnetic, gravity and drilling programmes have identified...

As part of the South Australian Steel and Energy Project, MESA has explored several significant aeromagnetic anomalies to try to find a possible iron ore resource. The Sequoia, Wirrida and Gina magnetic anomalies were chosen as indicating...

Mines and Energy South Australia, as part of its contribution to the South Australian Steel and Energy Project, has defined an iron ore resource in the Coober Pedy region. Extensive ground magnetic, gravity and drilling programs identified four...

As part of the South Australian Steel and Energy Project, MESA has targeted significant aeromagnetic anomalies in the search for a possible iron ore resource. At Peculiar Knob prospect, previous company exploratory drilling in 1985 of such a magnetic...

The samples are mainly of granitoid composition, with minor intermediate and mafic types. Textures include gneissic, schistose, aplitic and mylonitic. A deep crustal origin is suggested by the presence of orthopyroxene and garnet in a few...

This interpretation of magnetic and gravity data covering KINGOONYA was undertaken as part of an interpretation of the northern Gawler Craton, and was carried out without reference to any previous geophysical interpretation. Most of the work is based...