CANADIAN AND WORLD MINERAL DEPOSIT DATABASES
Geological Survey of Canada


Deposit number Country Location Names Commodities
761 Peru (Lima) 12.42.16 S -- 076.35.19 W Raúl-Condestable Cu; Ag; Au
 
Database name: World Fe-oxide+/-Cu-Au-U (IOCG) deposits
Compilers: Sunil S. Gandhi
Release date: 2015-03-04
   
Deposit name(s): Raúl-Condestable
Political location(s): Peru; Province or state: Lima; Nearest community: Lima (100 km SE)
Deposit clan (type): Kiruna-type
Deposit (sub) types: stratabound; magnetite-pyrite-chalcopyrite-actinolite-apatite replaces limestone, permeable tuffs, fragmentals and flows; veins cut dacitic intrusives; mantos up to 250x200x5 m, with dissseminated zone; Reference: Injoque, J., 2002: Fe Oxide-Cu-Au Deposits in Peru: An Integrated View; Section The Americas, in Hydrothermal Iron Oxide Copper-Gold and Related Deposits: A Global Perspective, Volume 2, Edited by Porter, T. M., Australian Mineral Foundation, Adelaide, Australia, PGC Publishing, Adelaide, 377 p, p. 97 - 114
Deposit status: producer; Size category: 50 Mt; Status comments: mining since 1950s; total resources including reserves and past production are approx. 50 Mt averaging 1.5 % Cu with Ag and Au as by-products; note locatin for Condestable 76° 35' 2" W, 12° 41' 28" S
Geologic province: Andean Orogen
Geologic subprovince: Coastal Cordillera
Geologic district: Cañete-Huarmey Marginal Basin
Commodities: Cu; Ag; Au
Mineralization styles: stacked lenses; marginal disseminations; veins
Geological ages: Early Cretaceous (host rocks)
Tectonic setting: continental marginal rift-basin; multiple regimes; Formal name: Cañete-Huarmey Marginal Basin (host rocks)
Coincident features: fissure eruptive zone (fissure-controlled Raúl-Condestable volcanic assemblage is 1 to 2 km thick in a marine basin); Coincident feature name: Calycantro Fault
Host rocks: (1) volcanic; mafic-intermediate volcanic rocks (Flows, volcaniclastics, limestone beds); Magma series/sedimentary package/metamorphic group: calc-alkaline; Depositional setting: ensialic rift; Metamorphic grade: prehnite-pumpellyite
Host rock stratigraphy:Chilca Formation (early Cretaceous)
Related igneous rocks: (1) intrusive; granodiorite-tonalite suite (dykes and stocks, andesitic to dacitic, controlled by ensiallic fissure); Initials: Chilca volcanic equivalents ; Magma series: calc-alkaline; Depositional setting: continental
(2) intrusive; granodiorite-tonalite suite (dykes and stocks, andesitic to dacitic, controlled by ensiallic fissure); Initials: Chilca volcanic equivalents; Magma series: tholeiitic
Country rocks: (1) marine sediments; (distal to volcanic centre); Country rock name: Chilca Formation; Metamorphic grade: burial
Metallogenic signatures: Fe
Cu
Au
Ag
Alteration signatures: albite-actinolite vein/replacement: albite, actinolite; What was altered: host volcanics, limestone and intrusives
potassic alteration: sericite, K-feldspar; What was altered: host volcanics, limestone and intrusives
chloritization: chlorite; What was altered: host volcanics, limestone and intrusives
hematization: hematite; What was altered: host volcanics, limestone and intrusives
carbonatization: calcite; What was altered: host volcanics, limestone and intrusives
silicification: quartz, silica; What was altered: host volcanics, limestone and intrusives
skarn: pre- or early mineralization formation of pyroxene; What was altered: limestone
Mineralogy: (alteration): sericite, k-feldspar, prehnite, albite, chlorite, pyrrhotite, scapolite, hornblendic actinolite, hastingsite
(gangue): calcite, silica
(mineralization): magnetite, chalcopyrite, pyrite, actinolite, apatite, bornite, mackinawite, valleriite, marcasite, electrum, cobaltite, molybdenite, ilmenite, galena, sphalerite
Radiometric ages: Object dated: Alteration Signature; Age - Ma: 128; +3.3; -3.3; Dating method: K-Ar; Concentrate: hastingsite; Source rock: ore zone; Formal name: hydrothermal alteration; Event dated: mineralization; Interpretive comment: the data indicate the time of mineralization and associated hydrothermal alteration; Reference: Vidal, C. E.; Injoque, J.; Sidder, G., 1990: Amphibolitic Cu-Fe Skarn Deposits in the Central Coast of Peru; Economic Geology, Volume 85, p. 1447 - 1461

Object dated: Alteration Signature; Age - Ma: 127; +3.1; -3.1; Dating method: K-Ar; Concentrate: hastingsite; Source rock: ore zone; Formal name: hydrothermal alteration; Event dated: mineralization; Interpretive comment: the data indicate the time of mineralization and associated hydrothermal alteration; Reference: Vidal, C. E.; Injoque, J.; Sidder, G., 1990: Amphibolitic Cu-Fe Skarn Deposits in the Central Coast of Peru; Economic Geology, Volume 85, p. 1447 - 1461

Object dated: Related igneous rocks; Age - Ma: 124; +3; -3; Dating method: K-Ar; Concentrate: whole rock; Source rock: monzodiorite dyke; Formal name: subvolcanic intrusion; Event dated: post-mineralization (intrusion); Interpretive comment: the age of monzodiorite intrusion is indistinguishable from the ; Reference: Vidal, C. E.; Injoque, J.; Sidder, G., 1990: Amphibolitic Cu-Fe Skarn Deposits in the Central Coast of Peru; Economic Geology, Volume 85, p. 1447 - 1461

Object dated: Related igneous rocks; Age - Ma: 107; +2.8; -2.8; Dating method: K-Ar; Concentrate: whole rock; Source rock: Trachyandesite porphyry; Formal name: subvolcanic intrusion; Event dated: post-ore dyke ; Interpretive comment: the age indicates post-ore igneous activity during the Albian (mid-Cretaceous) age; Reference: Vidal, C. E.; Injoque, J.; Sidder, G., 1990: Amphibolitic Cu-Fe Skarn Deposits in the Central Coast of Peru; Economic Geology, Volume 85, p. 1447 - 1461

Object dated: Related igneous rocks; Age - Ma: 104; +2.9; -2.9; Dating method: K-Ar; Concentrate: whole rock; Source rock: monzodiorite porphyry; Formal name: subvolcanic intrusion; Event dated: post-mineralization (intrusion); Interpretive comment: the age indicates post-ore igneous activity during the Albian (mid-Cretaceous) age; Reference: Vidal, C. E.; Injoque, J.; Sidder, G., 1990: Amphibolitic Cu-Fe Skarn Deposits in the Central Coast of Peru; Economic Geology, Volume 85, p. 1447 - 1461

Object dated: Related igneous rocks; Age - Ma: 102; +2.7; -2.7; Dating method: K-Ar; Concentrate: whole rock; Source rock: Trachyandesite porphyry; Formal name: subvolcanic intrusion; Event dated: post-ore dyke ; Interpretive comment: the age indicates post-ore igneous activity during the Aptian (mid-Cretaceous) age; Reference: Vidal, C. E.; Injoque, J.; Sidder, G., 1990: Amphibolitic Cu-Fe Skarn Deposits in the Central Coast of Peru; Economic Geology, Volume 85, p. 1447 - 1461

Object dated: Country Rocks; Age - Ma: 95; +2.6; -2.6; Dating method: K-Ar; Concentrate: whole rock; Source rock: post-ore dyke; Formal name: diabase dyke; Event dated: post-mineralization (intrusion); Interpretive comment: lake Cretaceous diabase dyke may be unrelated to the mineralization and host rocks; Reference: Vidal, C. E.; Injoque, J.; Sidder, G., 1990: Amphibolitic Cu-Fe Skarn Deposits in the Central Coast of Peru; Economic Geology, Volume 85, p. 1447 - 1461
Qualified comments: (Applies to: discovery and development) Mining since 1950s; total resources including reserves and past production are approx. 50 Mt averaging 1.5 % Cu with Ag and Au as by-products; note locatin for Condestable 76° 35' 2" W, 12° 41' 28" S.
References:
Injoque, J., 2002
Fe Oxide-Cu-Au Deposits in Peru: An Integrated View
Section The Americas, in Hydrothermal Iron Oxide Copper-Gold and Related Deposits: A Global Perspective, Volume 2, Edited by Porter, T. M., Australian Mineral Foundation, Adelaide, Australia, PGC Publishing, Adelaide, 377 p, p. 97 - 114

Ripley, E. M.; Ohmoto, H., 1977
Mineralogic, Sulfur Isotope,and Fluid Inclusion Studies of the Strata-bound Copper Deposits at the Raúl Mine, Peru
Economic Geology, Volume 72, p. 1017 - 1041

Ripley, E. M.; Ohmoto, H., 1979
Oxygen and Hydrogen Isotopic Studies of Ore Deposition and Metamorphism at the Raúl Mine, Peru
Geochimica et Cosmochimica Acta, Volume 43, p. 1633 - 1643

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

Vidal, C. E.; Injoque, J.; Sidder, G., 1990
Amphibolitic Cu-Fe Skarn Deposits in the Central Coast of Peru
Economic Geology, Volume 85, p. 1447 - 1461


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