But there are some different of mineral elements among them, such as, the content of K, Na, Fe, Mn, Zn in the NXZ is higher than NTZ, NKB, NYC, NSZY.

• 但各样点的岩石矿质元素含量有一定的差异,如,NXZ中K、Na、Fe、Mn、Zn含量比NTZ、NKB、NYC、NSZY高,NSZY中S的含量较其它四个岩样的低。