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 project followed a logical appraisal, from conducting high level aeromagnetics through low level aeromagnetics, ground geophysics, drilling and shaft sinking, to metallurgical testing. All geophysical methods used divide the anomaly into three...

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...

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....

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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...

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...

Mr. A.F. Ashmead, Olary South Australia, discovered a haematite deposit while prospecting and desired to bring it ot the attention of the Department of Mines to aid in the recent extended search for iron ore deposits. A visit was made to the deposit...

Footage and average assays are tabulated for iron ore intersected in drilling in the Racecourse Area to 4pm, 14 June 1956. Ten million tons of higher grade iron ore (56% Fe; 2.4% Mn; 8% Insol) and 5.5 million tons of lower grade ore (45% Fe; 1.4% Mn;...

Nine million tons of higher grade (58.7% Fe, 1.6% Mn, 7.2% Insol.) plus 8.0 million tons of lower grade (47.8% Fe, 2.1% Mn, 18.0% Insol.) containing in all 9 million tons of metallic iron have been indicated. This shows an increase of 1.5M tons over...

Gravity anomalies on a sand covered plain south of Cooyerdoo Hill have been found to be higher than those over adjacent areas of outcropping haematite-Quartzite. Available density information is confusing, and a short programme of drilling is...

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An appraisal of the B.H.P. Iron Knight Leases suggests that 35+ M tons of high grade iron ore could occur in depth on unheld land adjoining. One vertical D.D. hole to 800' is recommended to test the geological reasoning and a comprehensive drilling...

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 geophysical survey was carried out by the writer at Yalpara on the recommendation of A.R. Crawford (Geologist - Engineering and Mineral Resources Section). A base line running magnetic north and south (3000 feet long) was laid out by the writer and...

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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...

This report is the result of eighteen months’ field work by a small party. It presents a general picture of the geological and structural setting of the ore deposits of the Middleback Ranges. The rock types within the area described in detail and the...