andesite
andesite[ˈandɪzʌɪt, -sʌɪt]noun- [mass noun](Geology)a dark, fine-grained, brown or greyish intermediate volcanic rock which is a common constituent of lavas in some areas
(地质)安山岩
派生andesiticadjective语源- mid 19th cent.: named after the Andesmountains, where it is found + -ite
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