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单词 andesine
释义 andesine
[`an·dǝ´zēn]
MINERALOGY
A plagioclase feldspar with a composition ranging from Ab70An30 to Ab50An50, where Ab = NaAlSi3O8 and An = CaAl2Si2O8; it is a primary constituent of intermediate igneous rocks, such as andesites.
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