Serpentine

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Mineral class:	Phyllosilicate
Composition:	(Mg, Fe)3 Si2O5 (OH)4
Hardness:	3 - 6
Luster:	Waxy, greasy, pearly
Color:	Olive green, grey with streaked white, light green, brownish yellow
Streak:	White
Crystal form:	Monoclinic; fibrous or platy masses
Environment:	Found in the rock serpentinite, which is usually formed from peridotite by hydrothermal metamorphic processes.
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