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silicates Flashcards

types of silicates (5 cards)

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1
Q

nesosilicates-

A

no shared corners- (mg,Fe2 )SIO4 - contains the basic island unit of sio4-

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2
Q
A

“Double island” silicates
Shared vertex- [Si2O7]6-
SiO₄ tetrahedra share one oxygen atom-
Ca 2(Al,Fe3+)Al2Si 3O 12(OH)

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3
Q

Inosilicates:

A

Chain silicates- Si:O 1:3 [Si2O6]4-
Pyroxene
(Mg,Fe)SiO3

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4
Q

Cyclosilicates

A

Rings of linked [SiO4]4-
tetrahedra
Beryl
Be3Al2[Si6O18]
Aluminosilicate
Emerald, aquamarine

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5
Q
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