amosite
Britannica Concise Encyclopedia | Date: 2007
Variety of the silicate mineral cummingtonite, which is a source of asbestos. Cummingtonite is an amphibole mineral, an iron and magnesium silicate that occurs in metamorphic rocks in the form of long needlelike, fibrous crystals.
Copyright 1994-2007 Encyclopedia Britannica, Inc.
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