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罗布泊盐湖位于新疆塔里木盆地东端,为我国最大的硫酸盐型卤水钾盐成矿区,富钾卤水主要赋存于巨量钙芒硝岩晶间孔隙中。一般海水和陆相盐湖需经历石盐沉积之后,才出现钾元素富集和钾盐矿物沉积,晶间卤水通常赋存于石盐晶间孔隙中。海水蒸发至石盐析出时卤水中KCl含量约0.52%(瓦里亚什科,1965)。然而,罗布泊盐湖在石膏沉积之后出现巨量钙芒硝沉积,石盐析出时间相对很晚,沉积量也相对很小。钙芒硝大量沉积后,晶间卤水钾元素出现超前富集,卤水KCl平均含量达1.40%,
The Lop Nur Salt Lake is located in the eastern tip of the Tarim Basin in Xinjiang. It is the largest sulphate-type brine potassium mineralization in China. The potassium-rich brine mainly occurs in the pores of large amounts of glauconite. Ordinary seawater and terrestrial salt lakes need to experience the deposition of rock salt before potassium enrichment and potassium mineral deposits occur. Intergranular brine usually occurs in the pores of the stone salt intergranular. The KCl content in the brine is about 0.52% when seawater is evaporated until the stone salt is precipitated (Variyasco, 1965). However, large deposits of Glauber’s salt deposits appear in the Lop Nur Salina after the deposition of gypsum, and the deposition time of the rock salt is relatively late with a relatively small amount of deposition. After the glauberite was deposited in a large amount, potassium in the intercrystalline brine appeared advanced enrichment, the average content of brine KCl reached 1.40%