钾长石

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面体黄铁矿铁方解钾脉。

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，的钠可见于成早期，而钾的钠发生于成晚期。