phenocryst texture 斑晶结构
pyroxene phenocryst 辉石斑晶
phenocryst apatite 斑晶磷灰石
feldspar phenocryst 长石斑晶
Sanidine phenocryst 透长石斑晶
plagioclase phenocryst 斜长石斑晶
clinopyroxene phenocryst 单斜辉石斑晶
alkali feldspar phenocryst 碱性长石斑晶
N any of several large crystals that are embedded in a mass of smaller crystals in igneous rocks such as porphyry 斑晶
The groundmass has the same mineral components as phenocryst, and is composed of plagioclase, augite and olivine.
电子探针成分分析显示，基质矿物组成与斑晶矿物组成相同，均是由斜长石、辉石和橄榄石组成；
The results show that the TL signals of pumice and sanidine phenocryst have better thermal-stability, so they can be used for TL dating.
结果表明，浮岩和透长石的TL信号具有良好的热稳定性，适用于TL测年。
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