Mineral varieties of asbestosChrysotile asbestos, the fibrous variety of the mineral serpentine, is by far the most important type of asbestos. It forms in metamorphic rock, that is, rock that has been altered by intense heat and pressure. Another natural form of asbestos, crocidolite, is a dark blue variety of the mineral riebeckite. It, too, occurs in metamorphic rock. Only about 4% of the asbestos consumed is crocidolite. Other, less important asbestos minerals in occasional use are amosite, anthophyllite asbestos, tremolite asbestos, and actinolite asbestos.
Related category• GEOLOGY AND PLANETARY SCIENCE
Source: Mineral Information Institute
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