A reconnaissance of the Tumby Bay - Cummins area has revealed that only three of the deposits inspected, are suitable as potential road metal. The quartz reef, Section 82, Hundred Koppio, 1½ miles west of Yallunda Flat, has reserves of suitable stone...

Magnetic separation, flotation concentration and gravity concentration/size classification methods were tested for the beneficiation of Nairne-pyrite calcines. Magnetic separation following a reducing roast produced a concentrate assaying 62.1% Fe at...

A field reconnaissance of the Tarcoola district, to follow up two separate occurrences of high grade iron ore recently detected by members of the public, has revealed a predominantly igneous terrane containing small groups of remnant outcrops of iron...

This overall approach to Eyre Peninsula summarises regional geology and results of geophysical surveys and drilling. The restriction of ground geophysics and drilling at this stage to the Warramboo and Cowell anomalies and of Geological mapping and...

A zone of limonite and heamatite outcrops 4 miles long has been located on the lower southwestern slopes of the Northern Middleback Ranges. Detailed mapping, drilling and Costeaning have been commenced by the Department to evaluate the area. The area...

A ground magnetometer survey was carried out on section 134, Hundred of Cunningham, County Ferguson by the writer and B.E. Wilton, on the recommendation of L.S. Denholm. No significant magnetic anomalies were located suggesting the absence of...

Two angle diamond drillholes (totaling 1062 feet) were put down on a site of an anomaly detected during an aeromagnetic and ground magnetic survey. It was hoped that copper mineralisation may be located. A magnetic zone 80 feet wide and dipping 65...

Ground magnetometer surveys were carried out by the writer over typical portions of the geomagnetic anomalies located at the North Billeroo dam area and adjacent to the Alconie dam to determine their cause. Inspection of these areas showed that the...

A survey with gravity meter and vertical force variometer has been carried out on two aeromagnetic anomalies to the west of the Katunga Hills. The area is covered with sand and alluvium and results obtained indicate the anomalies to be due to varying...

In an area of limited basement outcrop located between 2 and 5 miles north-northwest of Iron Knob township, the Department's surface traverse channel sampling (969'), percussion boring (643’) and diamond drilling (1270’) tested a low grade...

A zone of limonite and haematite outcrops 4 miles long has been located on the lower south-western slopes of the North Middleback Range. Detailed mapping, drilling and costeaning have been completed by the Department to evaluate the area. The area has...

Extensive deposits of medium-high grade stratiform iron ores occur in the Radium Hill area. Deposits readily amenable to open cut mining occur over large areas, in beds ranging to 60 feet in width and varying considerably in the content of...

Vertical magnetometer and gravity meter traverses have been run over anomalies disclosed by aeromagnetic survey near Port Neill on Eyre Peninsula. The presence of a large quantity of magnetic rock, denser than the surrounding rocks and thus a possible...

A deposit of ironstone, reported on by R.K. Johns (D.M. 1183/55, G.S. 364) was inspected, further samples have been taken, and a section through the deposit has been drawn. No further action is recommended.

Two high grade hematite orebodies reported by R.L. Jack (Bulls, 3 and 9, Geological Survey of South Australia) were located and mapped on Section 5, Hundred of Campoona. Samples were taken for petrological examination and assay. No further action is...

An outcrop of hematite quartzite reported by prospector Morley on Sections 17 and 19, Hundred Kelly, was inspected. Surface chip samples were taken for assay over 5 outcrops. No further action is recommended at this stage.

The Airborne Magnetic Survey, Upper Eyre Peninsula (Sheet 2) - B.M.R. indicated sixteen magnetic anomalies of intensities >3000 gammas, approximately 1000 gammas above background. To give some indication of overburden depths at eight selected...

Very tight folding and remobilization of the Sturtian Holowilena Ironstone has produced a massive ironstone blow and small lenses of micaceous haematite. The haematitic quartz rock is not suitable for pigments, and lenses of haematite of pigment...

Geology of Lake Superior region outlined. Many similarities in tectonic evolution and depositional style of the 2 provinces. Recommends further research on Gawler Craton.

The Olary Silver Mine and Mount Perserverance Mine occur in two separate but immediately adjacent stratigraphic intervals. The Olary Silver Mine occurs within a laterally discontinuous, massive to poorly banded siliceous ironstone which is pyritic at...