CANADIAN AND WORLD MINERAL DEPOSIT DATABASES
Geological Survey of Canada


Deposit number Country Location Names Commodities
699 Zambia 13.27.40 S -- 024.59.40 E Kalengwa Cu
 
Database name: World Fe-oxide+/-Cu-Au-U (IOCG) deposits
Compilers: Sunil S. Gandhi
Release date: 2015-03-04
   
Deposit name(s): Kalengwa
Political location(s): Zambia; Nearest community: Kasempa (56 mi 270)
Deposit clan (type): Olympic Dam-type
Deposit (sub) types: sedimentary clast breccia; hosted by siliclastic sediments, with some shale and carbonate beds, overturned and steeply dipping; intruded by sodic altered mafic body; high grade due to strong supergene enrichment.; Reference: Ellis, M. W.; McGregor, J. A., 1967: The Kalengwa Copper Deposit in North-western Zambia; Economic Geology, Volume 62, p. 781 - 797
Deposit status: past producer; Size category: 0.6 million tonnes; Status comments: Blind ore body discovered in 1965; steeply dipping and lenticular; open pit mine to a depth of 150 m; the high grade ore, averaging 24 % Cu, is comprised mainly of supergene malachite and chalcocite.
Geologic province: Lufilian Fold Belt
Geologic subprovince: Zambian Copperbelt
Geologic district: western margin of Zambian Copperbelt
Deposit object located: mine site
Commodities: Cu
Mineralization styles: breccia-fillings; replacement of carbonate matrix ; disseminated Cu-sulphides in strata
Geological ages: Late Neohelikian - Cambrian (related magmatics)
Tectonic setting: continental rift-intracratonic; convergent; Formal name: Lufilian (mineralization)
Coincident features: fractures and breccia zones (ore zone transgressive at low angle to overturned host beds dipping 50-70 degrees to NW); Coincident feature name: folded sedimentary sequence
Regional tectonic structure: Neoproterozoic granitoids in Paleoproterozoic terrane (two phases of granitoids in ca. 570-530 Ma range; younger phase with magnetic anomalies on carapace) Tectonic structure name: Hook Batholith
Host rocks: (1) sedimentary; mudstone-carbonate-sandstone-conglomerate (Post-Katanga Neoproterozoic strata); Metamorphic grade: lower greenschist
Related igneous rocks: (1) intrusive; gabbro-diorite suite (altered strongly to albite-rich rock); Initials: Albite-chlorite rock; Magma series: calc-alkaline; Depositional setting: continental
(2) intrusive; unclassified granitoid rocks (Late tectonic, Pan-African, granite); Magma series: alkaline (A-type); Depositional setting: continental
Country rocks: (1) conglomerate; (calcareous conglomerate); Country rock name: Kc; Metamorphic grade: lower greenschist
(2) shale; (stratigrafically beolw Kc); Country rock name: Kd; Metamorphic grade: lower greenschist
(3) silty dolomitic limestone; (stratigraphic marker above Kc); Country rock name: Kb; Metamorphic grade: lower greenschist
(4) sandstone-shale; (youngest unit of host sequence); Country rock name: Ka; Metamorphic grade: lower greenschist
Alteration signatures: albitization: albite; What was altered: intrusion in host sediments near the deposit
chloritization: chlorite; What was altered: intrusion in host sediments near the deposit
supergene enrichment: malachite, chalcocite, digenite, cuprite, native c; What was altered: ore zone
Mineralogy: (mineralization): chalcocite, malachite
Radiometric ages: Object dated: Related igneous rocks; Dating method: U-Pb; Concentrate: zircon; Source rock: granite; Formal name: Hook granite; Event dated: mineralization; Reference: Hanson, R. E.; Wardlaw, M. S.; Wilson, T. J.; Mwale, G., 1993: U-Pb Zircon Ages from the Hook Granite Massif and Mwembeshi Dislocation: Constraint of Pan-African Deformation, Plutonism and Transcurrent Shearing in Zambia; Precambrian Research, Volume 63, p. 189 - 209
References:
Ellis, M. W.; McGregor, J. A., 1967
The Kalengwa Copper Deposit in North-western Zambia
Economic Geology, Volume 62, p. 781 - 797

Hanson, R. E.; Wardlaw, M. S.; Wilson, T. J.; Mwale, G., 1993
U-Pb Zircon Ages from the Hook Granite Massif and Mwembeshi Dislocation: Constraint of Pan-African Deformation, Plutonism and Transcurrent Shearing in Zambia
Precambrian Research, Volume 63, p. 189 - 209

Nisbet, B.; Cooke, J.; Richards, M.; Williams, C., 2002
Exploration for Iron Oxide Copper Gold Deposits in Zambia and Sweden: Comparison with the Australian Experience
in Hydrothermal Iron Oxide Copper-Gold and Related Deposits: A Global Perspective, Volume 1, Edited by Porter, T. M., Australian Mineral Foundation, Adelaide, Australia, PGC Publishing, Adelaide, 349 p, p. 297 - 308


Generated 2015-03-04 14:17:48 with GQuery -- 3.7 ADO (3.19..3.22 -- 2008-12-16)
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