n.長石
=felspar.
There are obvious differences in feldspar content between the north and south sides of the catchment area. 匯水區(qū)南北的長石含量存在明顯差異。
The ore-hunting indicator is of calcite-potassium feldspar veins containing pyritohedron pyrite. 直接找礦標志為含五角十二面體黃鐵礦鐵方解石鉀長石脈。
