Chambishi Mine, Chambishi, Kalulushi District, Copperbelt Province, Zambiai

Regional Level Types
Chambishi Mine	Mine
Chambishi	Town
Kalulushi District	District
Copperbelt Province	Province
Zambia	Country

A copper property at 948 meters deep (pump chamber and sumps). Ore averages 1.45% to 1.55% Cu (1983-84). Owned by the ZCCM, Kalulushi Div.

Mining at the Chambishi main orebody commenced in 1963. The first mineralisation extracted (July 1963) was stockpiled as low-grade oxide mineralisation but was never processed. Malachite, pseudomalachite and other copper secondary minerals could be collected from the low-grade oxide stockpile which was still accessible in the 1980s (information from Allan Ryan, a mine geologist at Chambishi from 1980 to 1986; see https://www.mindat.org/mesg-667798.html).

The Chambishi sediment-hosted copper-cobalt deposit (Davidson, 1931) is hosted by the Lower Roan Group in the Zambian Copper Belt and is located on the SW margin of the Kafue Anticline, approximately halfway between Nkana and Nchanga in northern Zambia.

The Chambishi deposits is estimated to contain 6.1 Mt Cu resources at an average grade of 2.71 % and Co resources of 0.15 Mt at an average grade of 0.10 %. The Chambishi deposit contains the Chambishi Main, Chambishi West, and Chambishi Southeast (SE) orebodies. The individual orebodies are distinguished by the presence of barren carbonate rocks (dolomitic biohermal reefs) separating the SE orebody from the Main orebody. The Chambishi SE orebody is situated on the southwestern flank of the Kafue Anticline, approximately 7 km southeast of the Main and West orebodies. The orebody comprises three concealed, deep-seated mineralization zones, designated as No. 1, No. 2, and No. 3, each extending to depths greater than 500 m). The ore body No. 1 strikes NW-SE and dips to the southwest and extends approximately 6.9 km along the strike, with a vertical thickness ranging from 1 to 24 m (averaging 8 m). It is located at depths between 480 and 1300 m. The ore body No. 2 is positioned adjacent to ore body No. 3, with a weakly mineralized zone interposed between them. The thickness of ore body No. 2 varies between 4 and 15 m, and it is defined by a strike length of 1280 m, a dip width ranging from 110 to 950 m, and an average thickness of 6.45 m. In contrast the ore body No. 3 is characterized by a strike length of 1250 m, a dip width of 250 to 850 m, and an average thickness of 3.51 m. The SE orebody is mainly stratiform and quasi-stratiform, occurring within the COM layer at the base of the Kitwe Formation in the Lower Roan Subgroup. Locally, the mineralization extends into the footwall conglomerate and quartzite.

Fossils

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Wikipedia:	https://en.wikipedia.org/wiki/Chambishi

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References