Objective The Lop Nor Basin is a very important Quaternary potash-formation basin in China.It is a typical sulphatepotash brine mine with an average grade of 1.4%(KG)in underground concentrated brines.It is extraordinary that the reservoir of potassium-rich brines is glauberite stratum rather than halite rock.The anomalous potassium enrichment,advanced in relative early stage of lake It is extraordinary that the reservoir of potassium-rich brines is glauberite stratum rather than halite rock. anomaly potassium enrichment, advanced in relative early stage of lake