| Reference Type | Journal (article/letter/editorial) |
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| Title | Microbiological Leaching of Porphyry Copper Type Mineralizations Post-Leaching Observations |
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| Journal | Canadian Journal of Earth Sciences |
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| Authors | Duncan, D. W. | Author |
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| Drummond, A. D. | Author |
| Year | 1973 (April 1) | Volume | 10 |
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| Issue | 4 |
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| Publisher | Canadian Science Publishing |
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| DOI | doi:10.1139/e73-047Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 473667 | Long-form Identifier | mindat:1:5:473667:1 |
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| GUID | 0 |
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| Full Reference | Duncan, D. W., Drummond, A. D. (1973) Microbiological Leaching of Porphyry Copper Type Mineralizations Post-Leaching Observations. Canadian Journal of Earth Sciences, 10 (4) 476-484 doi:10.1139/e73-047 |
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| Plain Text | Duncan, D. W., Drummond, A. D. (1973) Microbiological Leaching of Porphyry Copper Type Mineralizations Post-Leaching Observations. Canadian Journal of Earth Sciences, 10 (4) 476-484 doi:10.1139/e73-047 |
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| In | (1973, April) Canadian Journal of Earth Sciences Vol. 10 (4) Canadian Science Publishing |
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| Abstract/Notes | The metallic and silicate phases of a saussuritized quartz diorite were examined after 21 months of microbiological leaching. Essentially all the chalcocite and malachite disappeared. The chalcopyrite was not completely oxidized, but the mineral surfaces were discolored and etched. The molybdenite was unetched. The most abundant sulfide mineral present, was pyrite which was tarnished a deep yellow and heavily etched (Swiss cheese appearance). This etching suggests direct microbiological attack. Model experiments using pyrite from the same source confirmed that the etching only occurred when Thiobacillus ferrooxidans was present. |
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