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Asbestiform is a crystal habit. It describes a mineral that grows in a fibrous aggregate of high tensile strength, flexible, long, and thin crystals that readily separate.[1] The most common asbestiform mineral is chrysotile, commonly called "white asbestos", a magnesium phyllosilicate part of the serpentine group. Other asbestiform minerals include riebeckite, an amphibole whose fibrous form is known as crocidolite or "blue asbestos", and brown asbestos, a cummingtonite-grunerite solid solution series.

The United States Environmental Protection Agency explains that, "In general, exposure may occur only when the asbestos-containing material is disturbed or damaged in some way to release particles and fibers into the air."[2]

"Mountain leather" is an old-fashioned term for flexible, sheet-like natural formations of asbestiform minerals which resemble leather. Asbestos-containing minerals known to form mountain leather include: actinolite, palygorskite, saponite, sepiolite, tremolite, and zeolite.[3]

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  1. ^ Committee on Asbestos: Selected Health Effects, 2006, Asbestos: Selected Cancers, National Academies Press, ISBN 978-0309101691
  2. ^ "More Information on Asbestos Removal". Total Asbestos Removal Brisbane. 2019-07-21. Retrieved 2019-07-24.
  3. ^ "Mountain Leather". Retrieved 2021-09-20.