CANADIAN AND WORLD MINERAL DEPOSIT DATABASES
Geological Survey of Canada


Deposit number Country Location Names Commodities
298 Chile (Atacama) 26.33.18 S -- 070.19.00 W Manto Verde; Mantoverde Cu; Au; Ag; Fe
 
Database name: World Fe-oxide+/-Cu-Au-U (IOCG) deposits
Compilers: Sunil S. Gandhi
Release date: 2015-03-04
   
Deposit name(s): Manto Verde; Mantoverde
Political location(s): Chile; Province or state: Atacama; Nearest community: Copiapo (100 km 350)
Deposit clan (type): Olympic Dam-type
Deposit (sub) types: specularite-rich breccia ; Located on Manto Verde Fault, which dips moderately to the east and is part of the regional north-trending Atacama Fault Zone; older Manto Verde breccia and younger Manto Atacama breccia; Reference: Vila, T.; Lindsay, N.; Zamora, R., 1996: Geology of the Manto Verde Copper Deposit; in Andean Copper Deposits: New Discoveries, Mineralization Styles and Metallogeny, Edited by Camus, F.; Sillitoe, R.; Peterson , R. , Special Publication, Society of Economic Geologists, 5, 198 p, p. 157 - 169
Deposit status: producer; Size category: 120 Mt; Status comments: Production records date back to 19th century; 400 000 t mined during 1909-1939 (grade >3 % Cu); exploration by Empresa Minera de Mantos Blancos S. A. from 1988-95 outlined 85 Mt averaging 0.82 % Cu.
Geologic province: Chilean Coastal Cordillera
Geologic subprovince: Cretaceous Iron Belt
Geologic district: Los Pozos
Deposit object located: open pit
Commodities: Cu; Au; Ag; Fe
Mineralization styles: breccia-fillings
Geological ages: Early Cretaceous (host rocks)
Middle Cretaceous (alteration)
Tectonic setting: continental orogenic belt-major fault zone; convergent; Formal name: Atacama Fault Zone (mineralization)
Coincident features: fault trending NNW with breccia zones (Subsidiary fault of the regional Atacama Fault Zone; premineralization strike-slip and postmineralization dip-slip (E-side down) movements); Coincident feature name: Manto Verde Fault
Regional tectonic structure: fault Tectonic structure name: Atacama Fault
Host rocks: (1) volcanic; intermediate volcanic rocks (subaerial); Magma series/sedimentary package/metamorphic group: calc-alkaline; Depositional setting: continental arc; Metamorphic grade: greenschist
Host rock stratigraphy:Bandurrias Formation
Related igneous rocks: (1) intrusive; gabbro-diorite suite (subvolcanic diorite porphyry stocks); Magma series: calc-alkaline; Depositional setting: continental
(2) intrusive; granite suite (granite stocks); Magma series: calc-alkaline; Depositional setting: continental
Metallogenic signatures: Cu
Au
Ag
Fe
Alteration signatures: sericitization: sericite, clay; What was altered: andesite, diorite
potassic alteration: potash feldspar; What was altered: andesite,diorite
chloritization: chlorite; What was altered: andesite, diorite
tourmalinization: tourmaline; What was altered: host rock
silicification: quartz; What was altered: host rocks
Mineralogy: (alteration): hematite, malachite, chrysocola, brochantite, atacamite, cuprite, native copper
(gangue): specularite, calcite
(mineralization): chalcopyrite, pyrite, bornite
Radiometric ages: Object dated: Host Rocks; Age - Ma: 117; +3; -3; Dating method: K-Ar; Concentrate: sericite; Source rock: Intermediate to felsic volcanics; Event dated: host rock; Interpretive comment: sericite alteration related to copper mineralization, hence age of host rocks is minimmum; Reference: Vila, T.; Lindsay, N.; Zamora, R., 1996: Geology of the Manto Verde Copper Deposit; in Andean Copper Deposits: New Discoveries, Mineralization Styles and Metallogeny, Edited by Camus, F.; Sillitoe, R.; Peterson , R. , Special Publication, Society of Economic Geologists, 5, 198 p, p. 157 - 169

Object dated: Related igneous rocks(2); Age - Ma: 121; +3; -3; Dating method: K-Ar; Concentrate: sericite; Source rock: granophyric dyke; Event dated: post-mineralization (intrusion); Interpretive comment: Ages for alteration-mineralization slightly older than adjacent plutons (130-127 Ma); Reference: Vila, T.; Lindsay, N.; Zamora, R., 1996: Geology of the Manto Verde Copper Deposit; in Andean Copper Deposits: New Discoveries, Mineralization Styles and Metallogeny, Edited by Camus, F.; Sillitoe, R.; Peterson , R. , Special Publication, Society of Economic Geologists, 5, 198 p, p. 157 - 169
References:
Benavides, J.; Kyser, T. K.; Clark, A. H.; Oates, C. J.; Zamora, R.; Tarnovschi, R.; Castillo, B., 2007
The Mantoverde Iron Oxide-Copper-Gold District, III Región, Chile: The Role of Regionally Derived, Nonmagmatic Fluids in Chalcopyrite Mineralization
Economic Geology, Volume 102, p. 415 - 440

Sillitoe, 2003
Iron Oxide-Copper-Gold Deposits: An Andean View
Mineralium Deposita, Volume 38, p. 787 - 812

Vila, T.; Lindsay, N.; Zamora, R., 1996
Geology of the Manto Verde Copper Deposit
in Andean Copper Deposits: New Discoveries, Mineralization Styles and Metallogeny, Edited by Camus, F.; Sillitoe, R.; Peterson , R. , Special Publication, Society of Economic Geologists, 5, 198 p, p. 157 - 169

Resource data:
Disclaimer - Reserves/Resource Data

Her Majesty the Queen in Right of Canada, represented by the Minister of Natural Resources (NRCan) does not warrant or guarantee the accuracy, completeness or fitness for any purpose of Reserve and Resource information (Data) contained in this database, including whether the Data is compliant with any securities regulations or standards, and NRCan does not assume any liability with respect to any damage or loss incurred as a result of the use made of the Data.

Resource and reserve figures are historical in nature. The Data source provided with each set of figures should be cited if the Data are re-reported.

Estimate date: 2001; Component: Oxide; 230 million metric tons ore; Combined with production?: yes; Provisional entry?: no; Resource category: total resource
Grade-commodity information:Cu: 0.55 percent
Au: 0.11 grams/metric ton
Cutoff grade-commodity:Cu: 0.2 percent
Reference: Sillitoe, 2003: Iron Oxide-Copper-Gold Deposits: An Andean View; Mineralium Deposita, Volume 38, p. 787 - 812
Percent weights allocated to deposit: 100.0%


Estimate date: 2001; Component: sulphide; 400 million metric tons ore; Combined with production?: yes; Provisional entry?: no; Resource category: total resource
Grade-commodity information:Cu: 0.52 percent
Reference: Sillitoe, 2003: Iron Oxide-Copper-Gold Deposits: An Andean View; Mineralium Deposita, Volume 38, p. 787 - 812
Percent weights allocated to deposit: 100.0%

Generated 2015-03-04 14:15:30 with GQuery -- 3.7 ADO (3.19..3.22 -- 2008-12-16)
GlobalDB System, Geological Survey of Canada, Natural Resources Canada