金红石的颗粒相对较粗，主要分布于石榴石粒间空隙和石榴石与绿辉石粒间，部分细粒金红石被石榴石和绿辉石包裹；
The particles of rutile are relatively large, mainly in the spaces between grains of garnet and omphacite grains, part of the fine rutile are encapsulated by garnet and omphacite.
结构组织与磨粒间的空隙量有关。
Structure. Structure refers to the amount of void space between the abrasive grains.
爆发相的主要空隙类型为粒间孔隙；
The main pore-type identified in explosive facies is intergranular pore;
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