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CH3041
MAJOR MINERAL GROUPS I
Class Mineral     Formula
Silicates Quartz     SiO2
Olivines     (Mg,Fe)2SiO4
Pyroxenes     (Mg,Fe)SiO3
(amfeebowls) Amphiboles     (Ca,Mg)7(Si4O11)2(OH)2
Feldspar     (Ca,Na,K)AlSi3O8
       eg. Orthoclase Feldspar     KAlSi3O8
Subclass Micas
Biotite    K(Mg,Fe)3AlSi3O10(OH)2
Muscovite KAl3Si3O10(OH)2
Oxides
Corundum Al2O3
Magnetite Fe3O4
Muscovite
Magnetite
K-feldspar
Pyroxene