Tags: Chemical Substance, Mineral.
Tremolite is a member of the amphibole group of silicate minerals with composition: Ca2Mg5Si8O22(OH)2. Tremolite forms by metamorphism of sediments rich in dolomite and quartz. Tremolite forms a series with actinolite and ferro-actinolite. Pure magnesium tremolite is creamy white but the color grades to dark green with increasing iron content. It has a hardness on Mohs scale of 5 to 6.
