Ore Deposits Flashcards

1
Q

Low Sulfidation Gangue Minerals

A

Quartz, carbonate, adularia, illite, fluorite

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2
Q

High Sulfidation Gangue Minerals

A

Quartz, Alunite, Pyrophyllite, Diaspore, Dickite, Topaz, Anhydrite, Kaolinite

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3
Q

Deposit type - Colliform Quartz

A

Low-Sulfidation Epithermal

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4
Q

Low Sulfidation Ore Minerals

A

Galena, Sphalerite, Chalcopyrite, Pyrite, Pyrrhotite

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5
Q

Tennantite ≥ Tetrahedrite in an Epithermal System

A

High Sulfidation

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6
Q

Tetrahedrite ≥ Tetrahedrite in an Epithermal System

A

Low Sulfidation

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7
Q

High Sulfidation Ore Minerals

A

Enargite, Pyrite, Covellite, Chalcocite/Diginite

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8
Q

Gangue Minerals - Redbed Deposits

A

Tenorite, Cuprite, MnOx, Hematite, Carbonate

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9
Q

Host Rock - Redbeds

A

Siltstones - Sandstones

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10
Q

Host Environment - Redbeds

A

Failed Rifts, Intracontinental Rifts

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11
Q

Supergene CuOx Minerals

A

Malachite/Azurite, Brochantite, Antlerite, Chalcanthite, Atacamite, Chrysocolla, Cuprite, Smectites, White Phyllosilicate

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12
Q

Supergene Leached Capping Minerals

A

Hematite, Jarrosite, Goethite, Pyrite + Chalcopyrite (Acid Generators), Native Copper

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13
Q

Supergene Enrichment Zone

A

Chalcocite-Covellite, Sphalerite, White Phyllosilicate, Kaolinite, Quartz (low temp)

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14
Q

Potassic Alteration Assemblage

A

K-Feldspar - White Phyllosilicate - Quartz

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15
Q

Phyllic Alteration Assemblage

A

Quartz - Muscovite - Pyrite

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16
Q

Argyllic Alteration Assemblage

A

Kaolinite - Muscovite - Smectite

17
Q

Advanced Argyllic Alteration Assemblage

A

Kaolinite - Alunite - Quartz

18
Q

Propylitic Alteration Assemblage

A

Chlorite - Epidote - Calcite

19
Q

Near-Intrusion Skarn Assemblage

A

Andradite Garnet, Iron Ore

20
Q

Moderately Distal Skarn Assemblage

A

Diopside, Copper-Gold Ore

21
Q

Contact Zone Skarn Assemblage

A

Wollastonite, Epidote, Zinc-Lead Ore