酸性火成岩,也叫做“花岗岩-流纹岩,是火成岩的一大类,其中富含二氧化硅,含量达65-75%。

酸性岩包括花岗岩花岗斑岩流纹岩等,其中浅色的含有长石、斜长石石英等,深色的含有黑云母

酸性岩中富含矿物,一般有、以及稀有金属等。

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