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Mineral Science > Mineral Environments > Flashcards

Mineral Environments Flashcards

1
Q

Genisis

A

Primary crystallization, properties are explained by the conditions of formation

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2
Q

sources crystallizing magma

A

Aqueous 1

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3
Q

dehydrating sedimentary rocks

A

Aqueous 1

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4
Q

mantle degassing

A

aqueous 1

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5
Q

migrated meteoric and seawater

A

aqueous 1

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6
Q

heated solution transport and precipitate along path where minerals like calcite can accumulate

A

aqueous 1

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7
Q

hydrothermal endogenic

A

aqueous 1

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8
Q

surface solutions or brines (exogenic)

A

aqueous 2

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9
Q

ground, karst and soil water

A

aqueous 2

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10
Q

what type of sea do we have?

A

Aragonite sea that is high in magnesium

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11
Q

Evaporite minerals

A

halite, gypsum

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12
Q

Gas and fluid minerals

A

Hematite and sulfur

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13
Q

volcanic gas vents (fumaroles)

A

gas and fluids

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14
Q

skarns and metamorphism of limestone

A

gas and fluids

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15
Q

Ocean floor silt, clay minerals

A

Colloidal solutions

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16
Q

Al, Fe, Mn-HYdroxides

A

Colloidal solutions

17
Q

amorphous opal

A

colloidal solutions

18
Q

Silica tetrahedron present as dissolved clusters

19
Q

silicate liquids with silica tetrahedron chains

20
Q

Parameters of magma

A

Temp and pressure, partial pressures of H2O and O2

21
Q

< 45% SiO2

A

Ultramafic

22
Q

About 50% SiO2

23
Q

about 60% SiO2

A

intermediate

24
Q

> 65% SiO2

25
Q

Polymorphic transitions

A

Solid systems

26
Q

Prophyroblasts: garnet in a schist or gneiss

A

solid systems

27
Q

replacement processes

A

solid systems

28
Q

Mineral crystallization types

A

Free space, metasomatism, recrystallization

29
Q

Freely grow in gas, melt, solution

A

free space

30
Q

euhedral crystal habits

A

free space

31
Q

sulfur in volcanic gas, amethyst in hydrothermal solutions, porphyritic feldspars in magma

A

free space

32
Q

chemical composition is changed due to liquid flow

A

metasomatism

33
Q

simultaneous capillary dissolution and crystallization where a mineral replaces another

A

metasomatism

34
Q

Magmatic mineral deposits (exo vs. endo)

35
Q

metamorphic mineral deposits (endo vs. exo)

36
Q

Supergene mineral deposits (exo vs. endo)

37
Q

sedimentary mineral deposit (exo vs. endo)

Mineral Science (5 decks)

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