tremolite

A white to dark gray amphibole mineral, Ca₂Mg₅Si₈O₂₂(OH)₂, typically occurring in aggregates and used as a substitute for asbestos and in paints and ceramics.

A variety of amphibole, having usually a white to gray color, and occurring in fibrous or columnar crystalline masses.

A white variety of amphibole, or hornblende, occurring in long, bladelike crystals, and coarsely fibrous masses.

A pale grey/green amphibole mineral that is a mixed calcium and magnesium silicate, with the chemical formula Ca2Mg5Si8O22(OH)2; sometimes used in place of asbestos.

a white or pale green mineral (calcium magnesium silicate) of the amphibole group used as a form of asbestos