2005/09/29 | 长石[Feldspar]
类别(℃〖化学〗) | 评论(0) | 阅读(24) | 发表于 20:40
A class of framework silicates. The feldspar minerals form a continuous solid solution from Ca to Na to K. No (K,Ca) feldspars are found. Feldspar names are assigned to specific composition regions of the solution diagram (Klein and Hurlbut 1985).

Feldspar Mineral
Albite NaAlSi3O8
Andesine (Na,Ca)AlSi3O8
Anorthite CaAl2Si2O8
Anorthoclase (K,Na)AlSi3O8
Bytownite (Na,Ca)AlSi3O8
labradorite (Na,Ca)AlSi3O8
microcline KAlSi3O8
orthoclase KAlSi3O8
plagioclase CaAlSi2O8
sanidine KAlSi3O8
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