四川盆地三叠系蒸发岩的变质作用与富钾卤水的成因

在四川盆地三叠系蒸发岩建造中已发现钾盐镁矾、无水钾镁矾、软钾镁矾、杂卤石、钾石膏、多钙钾石膏、钙芒硝等矿物，并在多处发现富钾卤水。已有的资料表明，这些矿物组合是已沉积的固体钾盐层在成岩期水溶变质作用过程中形成的变质矿物组合。在此过程中大量的钾质转入水溶液，形成了富钾卤水。这种富钾卤水是可综合利用的ＫＣｌ、ＮａＣｌ和Ｌｉ、Ｓｒ、Ｃｓ、Ｒｂ、Ｂ、Ｂｒ、Ｉ的优质盐化工业原料卤水。

ORIGIN OF POTASSIUM RICHED BRINE AND THE METAMORPHISM OF TRIASSIC EVAPORITES IN SICHUAN BASIN

here is discovered kainite, langbeinite, pieromerite, polyhalite, syngenite, glauberite and potassium riched brine, containing K + 4995g/l,Br - 262g/l,B 2O 3 1535g/l, I - 0022g/l,at the Triassic evaporites in the Sichuan Basin. On the basis of available data, the sedimentary solid potash layers can be changed into potassium riched brine by the metamorphic process in diagenetic stage. KCl, NaCl and Sr, Li, Cs, Rb, B, Br, I can be recovered from the potassium riched brine.