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去年五月,我室蔡克勤、赵德钧两同志首次在四川省渠县农乐地区发现了多钙钾石膏(K_2SO_4·5CaSO_4·H_2OG(?)rgerite).目前已完成了矿物学方面的测试和研究工作.本区产出的多钙钾石膏普遍交代杂卤石(K_2SO_4·MgSO_4·2C_aSO_4·2H_2O),并保留有杂卤石的被交代残余.关于多钙钾石育形成的物理化学条件,经韩蔚田等同志查阅已有的水—盐体系相平衡资料表明,多钙钾石膏只能在较高的温度(>40℃)下,从富钾贫镁的溶液中形成.我们配制了100个合成卤水的实验点,出现人工合成多钙钾石膏晶体的卤水组成,都位于富含KCI的区域.这与已有的实验资料是基本吻合的.目前已有的实验资料大多是从查明杂卤石的形成条件出发的,因而有关多钙钾石膏形成条件的资料尚不充分,我们的实验也刚刚开始,但从物理化学资料来看,应是富钾贫镁卤水作用于杂卤石,才有利于生成多钙钾石膏.同时,本区还发现有疏锶钾石(K_2SQ_4·∽rSO_4)和氯氧镁铝石(Na_4Ca_2Mg_7Al_4(OH)_(22)
Last May, two gays, including Cai Keqin and Zhao Dejun, discovered for the first time the K 2 SO 4 .5 CaSO 4 .H 2OG (R) rgerite in Nongle District, Qu County, Sichuan Province. At present, we have completed the mineralogical testing and research work The calcareous gypsum produced in this area generally concretes the polyhalite (K_2SO_4 · MgSO_4 · 2C_aSO_4 · 2H_2O) and retains the residual parahalogenated residue.For the physical and chemical conditions of calcareous stone fertilization, Comrades reviewing the available water-salt system phase balance data shows that Ca-G-Gypsum can only form from potassium-rich, lean-magnesium solutions at higher temperatures (> 40 ° C) We have prepared 100 synthetic brine Of the experimental point, the emergence of synthetic calcium and potassium gypsum crystal brine composition, are located in the region rich in KCI.This is consistent with the existing experimental data is currently the experimental data mostly from the identification of polyhalite Of the conditions for the formation of starting, and therefore the conditions for the formation of calcined calcium gypsum material is not sufficient, our experiment has just begun, but from the physical and chemical data, it should be potassium-rich lean magnesium brine on the role of polyhalite, only Conducive to the formation of calcium and calcium gypsum at the same time The area also found that there are K_2SQ_4 · ∽rSO_4 and the magnesia (Na_4Ca_2Mg_7Al_4 (OH) _ (22)