钾长石

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

直接找标志为含五角十二面体黄解石钾长石脉。

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，斜长石的钠长石化可见于成早期，而钾长石的钠长石化只发生于成晚期。