Tectosilicates Flashcards
(18 cards)
1
Q
tectosilicate shape
A
framework
2
Q
tectosilicate formula
A
SiO2
3
Q
where does carlsbad show
A
alkali
4
Q
where does tartan show
A
alkali
5
Q
where does albite show
A
both
6
Q
where does perthitic show
A
both
7
Q
where does baveno show
A
both
8
Q
where does rapakivi show
A
both
9
Q
what mineral intrudes in granophyric
A
quartz
10
Q
what mineral intrudes in myrmekitic
A
quartz
11
Q
calcic to sodic
A
normal zoning
12
Q
sodic to calcic
A
reverse zoning
13
Q
alternating sodic and calcic
A
oscillatory
14
Q
light blue feldspathoid
A
haüyne
15
Q
bright blue feldspathoid
A
lazurite
16
Q
blue to violet feldspathoid
A
sodalite
17
Q
rare feldspathoid
A
cancrinite
18
Q
low birefringence feldspathoid
A
laucite
