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Collective term for three highly fibrous (asbestiform) varieties of amphibole: crocidolite, amosite, and actinolite. All have long, silky to splintery fibres with appreciable tensile strength and are of economic importance as asbestos.
This entry comes from Encyclopædia Britannica Concise. For the full entry on amphibole asbestos, visit Britannica.com.
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