Ore Deposits Flashcards
Low Sulfidation Gangue Minerals
Quartz, carbonate, adularia, illite, fluorite
High Sulfidation Gangue Minerals
Quartz, Alunite, Pyrophyllite, Diaspore, Dickite, Topaz, Anhydrite, Kaolinite
Deposit type - Colliform Quartz
Low-Sulfidation Epithermal
Low Sulfidation Ore Minerals
Galena, Sphalerite, Chalcopyrite, Pyrite, Pyrrhotite
Tennantite ≥ Tetrahedrite in an Epithermal System
High Sulfidation
Tetrahedrite ≥ Tetrahedrite in an Epithermal System
Low Sulfidation
High Sulfidation Ore Minerals
Enargite, Pyrite, Covellite, Chalcocite/Diginite
Gangue Minerals - Redbed Deposits
Tenorite, Cuprite, MnOx, Hematite, Carbonate
Host Rock - Redbeds
Siltstones - Sandstones
Host Environment - Redbeds
Failed Rifts, Intracontinental Rifts
Supergene CuOx Minerals
Malachite/Azurite, Brochantite, Antlerite, Chalcanthite, Atacamite, Chrysocolla, Cuprite, Smectites, White Phyllosilicate
Supergene Leached Capping Minerals
Hematite, Jarrosite, Goethite, Pyrite + Chalcopyrite (Acid Generators), Native Copper
Supergene Enrichment Zone
Chalcocite-Covellite, Sphalerite, White Phyllosilicate, Kaolinite, Quartz (low temp)
Potassic Alteration Assemblage
K-Feldspar - White Phyllosilicate - Quartz
Phyllic Alteration Assemblage
Quartz - Muscovite - Pyrite