出典:Wiktionary
chrysotile (countable かつ uncountable, 複数形 chrysotiles)
出典:Wikipedia
出典:『Wikipedia』 (2011/06/14 12:40 UTC 版)
Chrysotile or white asbestos is the most commonly encountered form of asbestos, accounting for approximately 95% of the asbestos in place in the United States and a similar proportion in other countries. It is a soft, fibrous silicate mineral in the serpentine group of phyllosilicates; as such, it is distinct from other asbestiform minerals in the amphibole group. Its idealized chemical formula is Mg3(Si2O5)(OH)4.