Frae Wikipedia
Jump to navigation Jump to search
Asbestos with muscovite.jpg
Fibrous tremolite asbestos on muscovite
Category Meeneral
Strunz clessification 09.ED.15
Dana clessification 71.01.02d.03
Creestal seestem Orthorhombic
Formula mass 277.11 g
Colour Green, reid, yellae, white, blue
Creestal habit Amorphous, granular, massive
Fractur Fibrous
Mohs scale haurdness 2.5–3
Skinkle 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 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 (July 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. 
  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.