Stanienda-Pilecki Katarzyna J
Department of Applied Geology, Silesian University of Technology, Akademicka 2 Street, 44-100, Gliwice, Poland.
Sci Rep. 2023 Oct 31;13(1):18759. doi: 10.1038/s41598-023-46013-2.
Detailed data on carbonate minerals different in magnesium content including their crystal structures were presented in this article. The samples were collected from the formations of the Lower Muschelkalk and the Upper Muschelkalk. X-ray diffraction and electron microprobe analysis were used for carbonate phases determination. The following minerals with different Mg content were identified: low-Mg calcite, high-Mg calcite, proto-dolomite, ordered dolomite and de-huntite. The content of Mg in high-Mg calcite is higher than in low-Mg calcite but lower than that of proto-dolomite. Proto-dolomite is characterized by lower content of Mg than typical for stoichiometric value for dolomite-ordered dolomite. Due to the reduced Mg content in identified huntite, this carbonate phase was named as de-huntite. The research results are significant because they are a source of new data on carbonate phases with different Mg content which build studied Triassic rocks and crystal structures of these minerals.
本文给出了关于镁含量不同的碳酸盐矿物及其晶体结构的详细数据。样品采自下马斯石灰岩组和上马斯石灰岩组地层。采用X射线衍射和电子微探针分析来确定碳酸盐相。鉴定出了以下具有不同镁含量的矿物：低镁方解石、高镁方解石、原白云石、有序白云石和脱羟水菱镁矿。高镁方解石中的镁含量高于低镁方解石，但低于原白云石。原白云石的特征是镁含量低于白云石化学计量值的典型含量——有序白云石。由于鉴定出的水菱镁矿中镁含量降低，这种碳酸盐相被命名为脱羟水菱镁矿。研究结果意义重大，因为它们是关于构成所研究的三叠纪岩石的不同镁含量碳酸盐相及其矿物晶体结构的新数据来源。
