Asbestos

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Asbestos
Asbestos with muscovite.jpg
Fibrous tremolite asbestos on muscovite
Category Mineral
Strunz classification 09.ED.15
Dana classification 71.01.02d.03
Identification
Formula mass 277.11 g
Color Green, reid, yellae, white, blue
Crystal habit Amorphous, granular, massive
Crystal seestem Orthorhombic
Fractur Fibrous
Mohs scale hairdness 2.5–3
Luster Silky
Streak White
Optical properties Biaxial
Birefringence 0.008
2V angle 20° tae 60°
Dispersion relatively weak
Ultraviolet fluorescence Non-fluorescent

Asbestos is a set o sax naiturally occurrin silicate minerals,[1] which aw hae in common thair eponymous asbestiform habit: lang (roughly 1:20 aspect ratio), thin fibrous creestals, wi each veesible fibre componed o millions o microscopic "fibrils" that can be released bi abrasion an ither processes.[2] Thay are commonly kent bi thair colours, as blue asbestos, broun asbestos, white asbestos, an green asbestos.

References[eedit | eedit soorce]

  1. Alleman, James E.; Mossman, Brooke T (Julie 1997). "Asbestos Revisited" (PDF). Scientific American. 277: 54–57. Bibcode:1997SciAm.277a..70A. doi:10.1038/scientificamerican0797-70. Archived frae the oreeginal (PDF) on 3 Juin 2010. Retrieved 26 November 2010. 
  2. Gee, David; Greenberg, Morris (9 Januar 2002). "Asbestos: from 'magic' to malevolent mineral" (PDF). Late lessons from early warnings: the precautionary principle 1896–2000. Copenhagen: EEA (22): 52–63. ISBN 92-9167-323-4. Retrieved 20 Aprile 2010.