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A Shaba-type Cu-Co(-Ni) Deposit at Luamata, West of the Kabompo Dome, Northwestern Zambia

2000; Volume: 9; Issue: 3-4 Linguagem: Inglês

10.2113/0090277

1878-6715

N. Steven,

Geochemistry and Geologic Mapping

Research Article| July 01, 2000 A Shaba-type Cu-Co(-Ni) Deposit at Luamata, West of the Kabompo Dome, Northwestern Zambia NICHOLAS MACRAE STEVEN NICHOLAS MACRAE STEVEN Rockwater Consulting Constantia, Cape Town, South Africa Search for other works by this author on: GSW Google Scholar Author and Article Information NICHOLAS MACRAE STEVEN Rockwater Consulting Constantia, Cape Town, South Africa Publisher: Canadian Institute of Mining, Metallurgy and Petroleum Received: 25 Sep 2000 Accepted: 25 May 2001 First Online: 02 Mar 2017 © 2002 Canadian Institute of Mining, Metallurgy and Petroleum Exploration and Mining Geology (2000) 9 (3-4): 277–287. https://doi.org/10.2113/0090277 Article history Received: 25 Sep 2000 Accepted: 25 May 2001 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation NICHOLAS MACRAE STEVEN; A Shaba-type Cu-Co(-Ni) Deposit at Luamata, West of the Kabompo Dome, Northwestern Zambia. Exploration and Mining Geology 2000;; 9 (3-4): 277–287. doi: https://doi.org/10.2113/0090277 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyExploration and Mining Geology Search Advanced Search Abstract The Shaba-type Luamata Cu-Co(-Ni) deposit (11°50′S, 24°28′E) is located in a tectonic slice of Katangan Roan Supergroup (Mines Group) sedimentary rocks, surrounded by younger Kundelungu Supergroup lithologies in the external fold and thrust belt of the Lufilian Arc. Luamata is a classic central African copper clearing in dense woodland, visible as a tonal botanical anomaly on Landsat imagery. Supergene Cu-Co mineralization (especially malachite and subordinate chalcocite, digenite, covellite, and copper and cobalt oxides) and, probably hypogene, bornite, and chalcopyrite are hosted by altered, but essentially unmetamorphosed, moderately dipping, dolostones and dolomitic shales. Alteration products include talcose dolomite, sericite rocks and intense silicification and brecciation. Friable yellow shale is best mineralized with cobalt (up to 0.43 wt%), whereas, highest copper grades occur in brecciated, silicified shale (up to 13.5 wt% CuO). Soil copper and cobalt contents are up to 2.2 and 0.6 wt%, respectively. A newly identified nickel zone (where soil contents exceed 0.1 wt% Ni) fringes the Cu-Co deposit. Polymictic, matrix-supported breccias with a calcareous matrix that underlie the Cu-Co deposit are interpreted to be fluidization breccias related to thrust tectonics and the emplacement of the Mines Group slice. Although small compared to the Kolwezi district Shaba deposits in the Democratic Republic of the Congo, Luamata exhibits all the classic features of an ore deposit type (with low calcite contents), whose high metal concentrations could potentially be very profitably exploited by low-cost opencast mining and hydrometallurgical recovery methods. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.