Rositsa Nikolova, Vladyslav Kostov-Kytin, P. Petrov, Liliya Tsvetanova, Nikolay Gospodinov, Kristina Metodieva
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引用次数: 0
摘要
通过化学分析和 X 射线衍射，对东罗多彼山脉 Lozen 矿区的一组硫酸盐进行了鉴定。已确定的矿物种类有三种：硫酸镁（epsomite，MgSO4）、泡沸石（MgAl2(SO4)4-22H2O）和矾土（Al2(SO4)3-17H2O）。研究人员试图描述所研究样品在润湿时发生的相变。结果表明，在湿度较高的情况下，泡沸石会溶解，为随后的沸石和矾土的结晶提供成分。此外，褐藻原在干燥时会失去部分结晶水，再次结晶为泡沸石，包括周围介质中的镁元素。这项研究揭示了在类似条件下与硫酸盐矿化沉积机制和顺序有关的某些遗传学问题。
Sulphate mineralization from one locality in Lozen ore field, Eastern Rhodopes
A suite of sulphates from a locality in Lozen ore field in the Eastern Rhodopes has been characterized by chemical analyses and X-ray diffraction. Three mineral species have been identified: epsomite (MgSO4), pickeringite (MgAl2(SO4)4•22H2O) and alunogen (Al2(SO4)3•17H2O). An attempt was made to characterize the phase transformations that occur upon wetting of the studied samples. The results show that at high humidity, pickeringite dissolves, providing constituents for subsequent crystallization of epsomite and alunogen. Further on, upon drying alunogen loses some of its crystallization water and recrystallizes again to pickeringite including magnesium species from the surrounding medium. This study draws light on certain genetic aspects related to the mechanisms and sequence of deposition of sulphate mineralization under similar conditions.
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