Igneous Minerals Flashcards

1
Q

Tridymite

A

SiO₂

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2
Q

Cristobalite

A

SiO₂

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3
Q

Orthoclase

A

KAlSi₃O₈

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4
Q

Sanidine

A

KAlSi₃O₈

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5
Q

Microcline

A

KAlSi₃O₈

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6
Q

Albite

A

NaAlSi₃O₈

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7
Q

Anorthite

A

CaAl₂Si₂O8

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8
Q

Forsterite

A

Mg₂SiO4

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9
Q

Fayalite

A

Fe₂SiO4

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10
Q

Diopside

A

CaMgSi₂O₆

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11
Q

Hedenbergite

A

CaFeSi₂O₆

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12
Q

Augite

A

*like He-Di, but Ca deficient, some (Ti,Al,Cr) in place of (Fe,Mg), some Al in place of Si

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13
Q

Enstatite

A

Mg₂Si₂O₆

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14
Q

Ferrosilite

A

Fe₂Si₂O₆

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15
Q

Aegerine

A

NaFe³⁺Si₂O₆

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16
Q

Jadeite

A

NaAlSi₂O₆