feldspar

The ore-hunting indicator is of calcite-potassium feldspar veins containing pyritohedron pyrite.

直接找矿标志为含五角十二体黄铁矿铁方解钾脉。

The middle oil-member is characterized by medium-sized sandstone and pebbled sandstone, with fair sorting and subangular sphaericity.Rock types mainly were feldspar debris sandstone.

中油组主要沉积中砂岩和含砾中砂岩，粒度整体较粗，分选性较好，磨圆度以次棱角状为主，岩类型为岩屑砂岩。

Therefore, the albitization of plagioclase is shown in the early stage of diagenesis and albitization of potash feldspar appears only in the late stage of diagenesis.

因此，斜钠化可见于成岩早期，而钾钠化只发生于成岩晚期。

Latites contain plagioclase feldspar (andesine or oligoclase) as large, single crystals (phenocrysts) in a fine-grained matrix of orthoclase feldspar and augite.

安粗岩中包含斜（中或奥），是在正和普通辉组成细粒基质中大单晶体（斑晶）。