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用法例句

Amphibole is the major mafic phenocryst of the Huichang shoshonite in southern Jiangxi.

赣南会昌橄榄玄粗岩中镁铁矿物斑晶以角闪石为主,通过电子探针分析、湿化学分析及X射线衍射分析,一致确认会昌橄榄玄粗岩中角闪石属于钙质角闪石亚类,为镁绿钙闪石。

)consists of a series of volcanic-sedimentary rock predominated by intermediate-basic volcanic rocks with rare picrite and ankaramite at the base.

阿尔泰南缘晚古生代火山岩十分发育,其中中泥盆世北塔山组为一套以中基性火山岩为主的火山—沉积岩系,并且其下部发育少见的苦橄岩和富辉橄玄岩。