A holocene zinc orebody formed by supergene replacement of mosses |
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| Authors: | Ian R Jonasson Lionel E Jackson Donald F Sangster |
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| Institution: | 1. Geological Survey of Canada, 601 Booth Street, Ottawa, Ont. K1A 0E8 Canada;2. Geological Survey of Canada, Galgary, Alta. Canada |
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| Abstract: | An extensive deposit of secondary zinc minerals has been formed at Howard's Pass, Yukon by replacement of mosses and as a cement within talus. The deposits are of Holocene age (younger than 9610 yr. B.P.) and occur in blanket peat bogs percolated by zinc-rich springwaters. Buried moss strata undergo cell by cell replacement forming zincian clacite, smithsonite and hemimorphite. The last is the most important secondary mineral in both mosses and talus. |
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