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Minerals-Chemical Formulas
Chemical formulas of basic minerals
19
Geology
Undergraduate 2
09/17/2009
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Term
Quartz
(Framework Structures)
Silicates
 Definition
SiO2
Term
Opal
(Framework Structures)
Silicates
 Definition
SiO2*2H20
Term
Plagioclase Feldspar:
general: anorthite ->bytownite ->labradorite ->oligoclase ->albite
(Framework Structures)
Silicates
 Definition
(Na,Ca)(Si,Al)4O8
Term
Anorthite
(Framework Structures)
Silicates
 Definition
CaAl2Si2O8
Term
Albite
(Framework Structures)
Silicates
 Definition
NaAlSi3O8
Term
Potassium Feldspar: Sanidine
(Framework Structures)
Silicates
 Definition
KAlSi3O8
Term
Potassium Feldspar: Microcline(Orthoclase)
(Framework Structures)
Silicates
 Definition
KAlSi3O8
Term
Feldspathoids: Sodalite
(Framework Structures)
Silicates
 Definition
Na8(AlSiO4)6Cl2
Term
Feldspathoids: Nepheline
(Framework Structures)
Silicates
 Definition
(Na,K)AlSiO4
Term

Stilbite

Zeolites

Framework Structures Silicates

 Definition
NaCa2Al5Si13O36*14H2O
Term

Kaolinite

Sheet Silicates

 Definition
Al2Si2O5(OH)4
Term

Serpentine

Sheet Silicates

 Definition
Mg3Si2O5(OH)4
Term

Talc

Sheet Silicates

 Definition
Mg3Si4O10(OH)2
Term

Muscovite

Sheet Silicates

 Definition
KAl2Si3AlO10(OH)2
Term

Phlogopite-Biotite

Sheet Silicates

 Definition
K(Mg,Fe)3Si3AlO10(OH)2
Term

Chlorite

Sheet Silicates

 Definition
(Mg,Fe)6(Si,Al)4O10(OH)8
Term

Tremolite-Actinolite

Ambhiboles

Double Chain Silicates

 Definition
Ca2(Mg,Fe)5Si8O22(OH)2
Term

Hornblende

Amphiboles

Double Chain Silicates

 Definition
(Ca,Na)2-3(Mg,Fe,Al)5Si6(Si,Al)2O22(OH)2
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