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The asbestos formerly used in the arts was generally a fibrous form of some kind of amphibole, like tremolite, or anthophyllite, though occasionally perhaps a pyroxene.

In Georgia the asbestos, which is anthophyllite, occurs in lenticular masses in peridotite associated with gneiss.

The asbestos of Italy and Cyprus is anthophyllite, more like the Georgia material.

Asbestos consists mostly of magnesium silicate minerals—chrysotile, anthophyllite, and crocidolite.