Tremolite, Ca2(Mg,Fe2+)5Si8O22(OH)2, is a common inosilicate (chain silicate) mineral of the amphibole group. Its crystal system is monoclinic with long bladed or prismatic crystal habit. It is known to crystallize in the asbestiform habit and the fibrous form of temolite is one of six recognized types of asbestos. Tremolite is sometimes found as a contaminant in talc, vermiculite (as in Libby, Montana) and crysolite (itself as an asbestos mineral).
Highlighting FeaturesSilicon (Si) atoms Calcium (Ca) atoms Magnesium (mg) atoms Oxygen (O) atoms Tetrahedrally-coordinated silicon atom Silicon double-chain structural unit Single unit cell All atoms
Tremolite is found in metamorphosed limestone.
Sueno, S., M. Cameron, J.J. Papike, and C.T Prewitt. 1973.The high temperature crystal chemistry of tremolite T=400 C. American Mineralogist. 58:649-664.