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.

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

ReferencesEedit

  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 original (PDF) on 3 June 2010. Retrieved 26 November 2010. Unknown parameter |deadurl= ignored (help)
  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 Apryle 2010.