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Conference Proceedings

The AusIMM Proceedings 1971

Conference Proceedings

The AusIMM Proceedings 1971

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Geochemical and Bacteriological Studies of the Cupriferous Environment at Pernatty Lagoon, South Australia

A number of small copper deposits occur in the Pernatty Lagoon-Mt. Gunson area. Textural and mineralogical differences distinguished the lagoon sulphide deposits, which occur in a water filled basin of permeable bedrock immediately under the lagoon floor, from the largely oxidized deposits which occur in the low hills adjacent to the lagoon deposits.Groundwaters are carrying copper, and to a lesser extent zinc, downstream to the lagoon. Several species of sulphate-reducing bacteria are widespread in the groundwaters and lagoon muds.It is suggested that copper sulphides were first deposited at the same time as, or soon after, the host Proterozoic sediments, and that during the present cycle of erosion the lagoon deposits may have been enriched, or largely formed, by bacterial precipitation of copper sulphides from laterally migrating cupriferous groundwaters.
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  • Geochemical and Bacteriological Studies of the Cupriferous Environment at Pernatty Lagoon, South Australia
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  • Published: 1970
  • PDF Size: 0.27 Mb.
  • Unique ID: P_PROC1971_1270

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