于MnCl2-Na2B4O7（或NaB（OH）4-H2O）体系中进行锰方硼石（Chambersite）的合成实验研究，合成相用X射线衍射法和扫描电镜法鉴定。200℃和500巴条件下（2-10天）形成锰方硼石、羟锰方硼石（Mn3B7O13OH）和硼锰矿（MnBO2OH）；在110℃和溶液蒸汽压力下（30天）得到锰方硼石、羟锰方硼石和两个未知的锰硼酸盐。200℃、酸性溶液中（pH<5.2）锰方硼石易于结晶，而在碱性溶液中（pH>9.5）硼锰矿是惟一的合成相，文献中尚未见有关该矿物合成的报道。据本实验研究结果推测自然界锰方硼石的形成为一两步骤过程。第一步，在沉积环境中锰盐溶液与含硼溶液反应形成锰硼酸盐；第二步，在沉积后阶段由于物理化学条件的变化，早期形成的锰硼酸盐在酸性、富氯和较高的温度下转变为锰方硼石。论文作者推测，河北蓟县锰方硼石-硼锰矿组合的产出指示它们的形成温度应高于110℃和介质pH 在5.2-7.5之间。

于300℃，10MPa时测定了Fe2O3在KOH和HClO4稀溶液中的溶解度。溶解度数据分析表明，在中性-碱性热液中铁主要成Fe（OH）03和Fe（OH）-4形式存在。计算求得：300℃时，△G0FeOH03=-561.9土3.3kJ/mol，ΔG0FeOH-4=-662.7士5.0kJ/mol。在分析前人有关铁运移形式实验研究成果的基础上讨论了热液中铁的存在形式。Fe2O3， 溶解度， 中-碱性热液， 铁的存在形式。

Na-F solutions with different pH were allowed to react under flow conditions with limestone, dolomite and siderite at 300 and 400℃ at 500 bars, in order to understand the geochemical characteristics of the interaction between rock and F-bearing hydrothermal solutions. The mineralogical and chemical composition of these carbonate rocks was studied by chemical analysis, XRD and SEM/EDAX before and after reaction with Na-F solutions. Based on an approximate thermodynamic calculation the formation of alteration phases is discussed. The pH value at room conditions and the contents of K, Na, Ca, Mg, Fe, F, SiO2 and total dissolved CO2 in solution after interaction with carbonate rocks were determined. From solution chemistry data, it is found that the amount of Na and F in the reacted solutions seemed to have roughly similar fluctuations with time, and hence, carbonate might be an effective precipitating agent for Fe in hydrothermal solutions. The present experimental study demonstrates that hydrothermal metasomatism played a very important role in the formation of the Baiyun Ebo iron deposit.