amphibole - a mineral or mineral variety belonging to the amphibole group

amphibole group - a group of minerals with similar crystal structures containing a silicate chain and combinations of chiefly sodium and calcium and magnesium and iron and aluminum

chrysotile - a gray or green fibrous mineral; an important source of commercial asbestos

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