Igneous Minerals Flashcards
1
Q
Tridymite
A
SiO₂
2
Q
Cristobalite
A
SiO₂
3
Q
Orthoclase
A
KAlSi₃O₈
4
Q
Sanidine
A
KAlSi₃O₈
5
Q
Microcline
A
KAlSi₃O₈
6
Q
Albite
A
NaAlSi₃O₈
7
Q
Anorthite
A
CaAl₂Si₂O8
8
Q
Forsterite
A
Mg₂SiO4
9
Q
Fayalite
A
Fe₂SiO4
10
Q
Diopside
A
CaMgSi₂O₆
11
Q
Hedenbergite
A
CaFeSi₂O₆
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
13
Q
Enstatite
A
Mg₂Si₂O₆
14
Q
Ferrosilite
A
Fe₂Si₂O₆
15
Q
Aegerine
A
NaFe³⁺Si₂O₆