noun Mineralogy.
a white or grayish variety of amphibole, Ca 2 Mg 5 Si 8 O 22 (OH) 2 , usually occurring in bladed crystals.

1790–1800; named after Tremola, valley in Switzerland; see -ite1

tremolitic [trem-uh-lit-ik] , adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
tremolite (ˈtrɛməˌlaɪt)
a white or pale green mineral of the amphibole group consisting of calcium magnesium silicate. When occurring in fibrous habit, it is used as a form of asbestos. Formula: Ca2(Mg,Fe)5Si8O22(OH)2
[C18: from Tremola, name of Swiss valley where it was found + -ite]

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