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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

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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