CANADIAN AND WORLD MINERAL DEPOSIT DATABASES
Geological Survey of Canada


Deposit number Country Location Names Commodities
809 Peru (Ica) 15.03.16 S -- 075.06.11 W Mina Justa Cu; Fe
 
Database name: World Fe-oxide+/-Cu-Au-U (IOCG) deposits
Compilers: Sunil S. Gandhi
Release date: 2015-03-04
   
Deposit name(s): Mina Justa (occurrence name)
Political location(s): Peru; Province or state: Ica; Nearest community: Nazca
Deposit clan (type): Kiruna-type
Geologic province: Andean Orogen
Geologic subprovince: Coastal Cordillera
Geologic district: Caņete-Huarmey Marginal Basin
Deposit object located: stripped area
Commodities: Cu; Fe
Mineralization styles: disseminated (structurally-controlled mineralization); veinlets (structurally-controlled mineralization); vein(s) (structurally-controlled mineralization); breccia-fillings (structurally-controlled mineralization); replacement (Cu replacements of Mt Mantos)
Geological ages: Middle Jurassic - Late Jurassic (host rocks)
Tectonic setting: graben; extensional; Formal name: Marcona (mineralization)
Coincident features: fault(s) (shallow (10-30) to steep (70) ESE to SE dipping faults); Coincident feature name: Repetition Fault System
Host rocks: (1) volcanic; intermediate volcanic rocks; Component: main mineralized zone
External host rock forms:sill(s)
intercalated flows and volcaniclastic sediments
Individual lithologies:andesite (porphyritic)
crystal tuffs
sandstone (epiclastic)
siltstone
Host rock stratigraphy:Rio Grande Formation formation
Alteration signatures: albite-actinolite vein/replacement: actinolite+/-magnetite-apatite
potassic alteration: K-feldspar
magnetite replacement; What was altered: carbonate beds; Component: manto replacement
Mineralogy: (mineralization - oxide / fracture fill): chrysocola, atacamite
(mineralization - sulphide / magnetite manto replacement): chalcocite, bornite, chalcopyrite, pyrite
Qualified comments: (Applies to: mineralization) Manto magnetite replacements are hosts to subsequent copper mineralization
References:
Thompson, E.; Rath, U.; Baxter, B.; Bell, D.; Kutkevicius, J.; Porcile, F., 2007
Mina Justa Deposit, March 2007
Presentation, Chariot Resources, Prospectors and Developers Association of Canada, 19 p.


Generated 2015-03-04 14:16:27 with GQuery -- 3.7 ADO (3.19..3.22 -- 2008-12-16)
GlobalDB System, Geological Survey of Canada, Natural Resources Canada