Asbestos

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Asbestos
Asbestos with muscovite.jpg
Fibrous tremolite asbestos on muscovite
General
CategoryMeeneral
Strunz clessification09.ED.15
Dana clessification71.01.02d.03
Creestal seestemOrthorhombic
Identification
Formula mass277.11 g
ColourGreen, reid, yellae, white, blue
Creestal habitAmorphous, granular, massive
FracturFibrous
Mohs scale haurdness2.5–3
SkinkleSilky
StreakWhite
Optical propertiesBiaxial
Birefringence0.008
2V angle20° tae 60°
Dispersionrelatively weak
Ultraviolet fluorescenceNon-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 feebre 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 June 2010. Retrieved 26 November 2010. Unknown parameter |deadurl= ignored (help)
  2. Gee, David; Greenberg, Morris (9 January 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 April 2010.