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
Word origin
C18: from Tremola, name of Swiss valley where it was found + -ite
tremolite in American English
(ˈtrɛməˌlaɪt)
noun
a hard, white to dark-gray, monoclinic amphibole, Ca2Mg5Si8O22(OH)2, that is closely related to actinolite and found in either fibrous or crystalline form; hydrous calcium magnesium silicate
Word origin
after the Tremola valley, in Switzerland, where it was found + -ite1