Flotation and flocculation tests on MG14 drill core ore samples indicated that to achieve an economic recovery this rock could not be processed like the Cattlegrid material, either alone or by blending. Although the copper sulphide mineralization is...

Test work involved : - Air separation into coarse and fine fractions, and chemical analysis of the products : there was no accompanying concentration of copper. - Flotation testing : release analysis confirmed a copper grade of about 30%. For a...

Feasibility tests were made on fine-grained ore from the MG14 deposit and on froth flotation tailings from operations at Mount Gunson. Oil flotation is not an economic proposition on froth flotation tailings from the present operations, but for the...

Oil flotation has proved unsuccessful for recovery of copper from froth flotation tailings, and the preliminary leaching and roast leaching results are also not promising. The leaching results have highlighted the processing problems which can arise...

The optimum copper recovery of 70% using flotation was achieved at a copper grade of about 30%. Prior to flotation, the fines (less than 64 microns) were separated from the sands, and the 2 products separately treated. The tailings could possibly be...

This report evaluates the interpreted results of the 1976 Mount Gunson resistivity survey (see Pacminex rep. PMR 142/76) against the geology as known from stratigraphic drillholes. It concludes that the resolution is probably insufficient to identify...

2 million tonnes of low grade 0.64% Cu ore is about to be covered with overburden. At present copper prices, both heap leaching in the open pit area and in situ leaching would result in an annual running cost deficit of about $155 000 - $160 000 per...

Discusses the petrography of ore specimens obtained from the Tapley Hill Formation, Woocalla Dolomite, MacLeay Beds and Pandurra Formation, and their significance to extractive metallurgy.

A grid of 114 shallow drillholes over an area geologically similar to the Cattlegrid deposit (Whyalla Sandstone directly overlying Pandurra Formation) located 2 minor copper anomalies worthy of follow up drilling. There was close correlation between...

Drill holes OK81 to OK106 located MG14 type deposits in Tapley Hill Formation outliers near Birthday and 3.5 km SE of Bellamy Wells. The area has potential for other syngenetic deposits but more stratigraphic information is required.

Drill holes include BK2-BK4, BK7-BK9, LD23-LD25 and Noranda holes LD1, LD2.

4 specimens were examined for stratigraphic identification.

Samples were identified as: slumped and brecciated Woocalla Dolomite containing algal oncolith fragments and parts of laminae of stromatolites interbedded with dololutite; McLeay Beds epiglacial conglomerate containing large volcanic fragments.

As part of continuing brownfields exploration for extensions to known stratiform base metal mineralisation in the area lying to the west of Pernatty Lagoon, much stratigraphic drilling (210 rotary percussion holes totalling 12,441 m, including 1167 m...

Interpretation illustrates importance of good electrical (particularly resistivity) logs to assist in defining the more subtly expressed boundaries.

A single traverse over a deep channel indicated that resistivity measurements could reliably map the lateral position of channel anomalies, and provide rough depth-to-basement details.

Mineral abundance, grain sizes and textural complexity of copper sulphides were studied. Of particular interest were the abundance of sphalerite and carrollite and their attachments with copper sulphide, the nature of intergrowths of copper sulphides...

1:25,000 scale geological mapping and scout stratigraphic drilling (9 vertical rotary holes for a total penetration of 758.5 m) have outlined the general distribution of Adelaidean rocks in the Lake Macfarlane and Island Lagoon areas. Perhaps the most...

During the period from January 1974 to March 1976, 35 vertical rotary percussion water wells were drilled and many were cased off, perforated and then fitted with submersible electric pumps and offtake piping, to supply mine process water to the Mount...

In the 1975 drilling programme (8 holes totalling 397.5 metres) to test the EM INPUT interpretation, drill core sample assays gave low geochemical values, except for a slightly anomalous, pyritic, basal Pandurra Formation quartzite section in...