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ID number: BIRUG 107127 Institution: The Lapworth Museum of Geology Named collection: Zambian Copper Belt Definition: Malachite; Chrysocolla Object type: Carbonate; Silicate Place collected: Zambia; Kalengwa Mine Chronostratigraphy: Precambrian; ?Kalengwa Lithology: Kalengwa Marker Horizon |
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Description: Slab of green/grey limestone bearing green malachite. Attached label reads "K5 Mineralised silty limestone Medium grade ore 3-18% Cu. Malachite & Chrysocolla (from oxidation of bornite etc). Kalengwa Open Pit. Zambia. Pres by Roan Consol Mines 22.8.72." Attached descriptive list from Roan Consolidated Mines Limited states "K5 Decomposed silty limestone (Kalengwa Marker Horizon) with malachite and chrysocolla mineralisation representing oxidation of primary sulphiders (Bornite chalcopyrite and chalcocite) contained in the limestone at depth. "Medium grade" ore specimen >3 <18%Cu." |
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