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Strunz Classification - Oxides & Hydroxides

	Click on a subgroup to view further divisions.
	4/A	Oxides with metal : oxygen = 1:1 and 2:1 (M2O,MO)
	4/B	Oxides with metal : oxygen = 3:4 (spinel type M3O4 and related), Alumina-Spinels
	4/C	Oxides with metal : oxygen = 2:3 (M2O3 and related compounds)
	4/D	Oxides with metal : oxygen = 1:2 (MO2 and related compounds)
	4/E	Oxides with metal : oxygen < 1:2 (M2O5, MO3)
	4/F	Hydroxides and oxidic hydrates, water-bearing oxides with layered structure
	4/G	Vanadium oxides (with V4+/5+), group-vanadates
	4/H	Uranyl ([UO2]2+) hydroxides and hydrates
	4/J	Arsenides with [AsO3]3- groups
	4/K	Sulphides, selenides, tellurides with [XO3]2- groups and related structures
	4/L	Iodates with [IO3]1- groups
	4/X	Unclassified oxides
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Current server date and time: June 19, 2013 00:21:08