Framework Silicates (1:2) Flashcards
1
Q
Quartz
A
SiO2
Silica
2
Q
Chalcedony
A
SiO2
Microcrystalline silica
3
Q
Opal
A
SiO2 • n H2O
4
Q
Plagioclase
A
NaAlSi3O8, CaAl2Si2O8
Na-Ca feldspar
Albite-anorthite
5
Q
Potassium feldspar
A
KAlSi3O8
K-feldspar
Orthoclase, microcline, sanidine
6
Q
Leucite
A
KAlSi2O6
K-feldspathoid
7
Q
Nepheline
A
(Na,K)AlSiO4
Na-feldspathoid