Kangaroo Island North. Progress reports to licence expiry/renewal for the period 20/4/1972 to 19/4/1973.
Published: 10 Jan 1973 Created: 11 Nov 2024 Revised: 11 Nov 2024

An area of 100 square km, located 45 km west of Kingscote, was taken to enable follow-up exploration of some anomalous stream sediment geochemical sample values in lead (to a maximum 3200 ppm Pb) previously discovered by Elcor (Australia) Pty Ltd,...

An area of 100 square km, located 45 km west of Kingscote, was taken to enable follow-up exploration of some anomalous stream sediment geochemical sample values in lead (to a maximum 3200 ppm Pb) previously discovered by Elcor (Australia) Pty Ltd, but not further pursued. Initially, reconnaissance soil sampling (41 samples) confirmed the presence of soil sample anomalies in areas drained by northward-flowing streams in which the former stream sediment samples had been obtained. Next, systematic soil sampling (233 samples) was completed on a 100 m x 100 m grid covering an area of 2800 by 800 m. Analysis of these samples indicated a large arcuate soil anomaly of lead and zinc. However, further infill soil sampling at 20 m and 10 m spacings (411 samples), done along northerly traverses cutting across the general trend of the anomaly, broke up this anomaly into a number of spot highs and elevated lobes which were deemed unsatisfactory for defining drilling targets. To try a different approach, 25 lines of IP and resistivity measurements were acquired over the most discrete geochemical anomalies, and a plausible single drill target was identified on Line 4400E. In all, three main zones plus another weak, possible zone of IP chargeability were identified, and it was planned to dig costeans at these to investigate if the sources are shallowly buried. Earlier, some IP response determinations performed on six surface rock samples had shown that the expected sources of any IP anomalies would probably comprise pyrite, perhaps graphite, and galena, but not sphalerite.

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About this record

Record No mesac11842
Topic Geoscientific Information
Type of Resource Document
Category Type
Document Type Mineral Company Report - Mineral Exploration
Contributor Central Mineralogical Services Pty Ltd;McPhar Geophysics Pty Ltd
Sponsor AOG Minerals Pty Ltd
Tenement SML 688
Tenement Holder AOG Minerals Pty Ltd
Operator
Geological Province
Mine Name Dewrang prospect
Stratigraphy
Commodity
Notes
Geographic Locality: North-central Kangaroo Island;King George Creek;Blue Gum Hill;Snelling Fault
Doc No: Env 02022

Geographic Locality: North-central Kangaroo Island;King George Creek;Blue Gum Hill;Snelling Fault Doc No: Env 02022

Language English
Metadata Standard ISO 19115-3

Citations

Use constraints License
License Creative Commons Attribution 4.0
Persistent identifier https://pid.sarig.sa.gov.au/document/mesac11842
Citation Boyd, B.R.;Cowan, D.;Pontifex, I.R.;Purvis, A.C.;Burnside, E. 1973. Kangaroo Island North. Progress reports to licence expiry/renewal for the period 20/4/1972 to 19/4/1973. Mineral Company Report - Mineral Exploration
https://pid.sarig.sa.gov.au/document/mesac11842

Technical information

Status
Maintenance and Update Frequency
Geographic Reference GDA2020 (EPSG:7844)
Geo bounding box {"type":"Polygon","coordinates":[[[137,-36],[137.5,-36],[137.5,-35.5],[137,-35.5],[137,-36]]]}
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