Class IV: Oxides

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Class IV	Oxides
Anatase	TiO2
Brookite	TiO2
Chrysoberyl	BeAl2O4
Corundum	Al2O3
Hematite	Fe2O3
Opal	SiO2nH2O
Quartz	SiO2
Rutile	TiO2
Spinel	MgAl2O4

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