塔吉克斯坦某金矿成因探讨

Discussion on Genesis of a Gold Mine in Tajikistan

通过对塔吉克斯坦某金矿地层、构造、岩浆岩及地球化学成果综合研究表明,工作区矿体主要受石炭系马尔古佐尔岩系灰岩和炭质页岩-砂岩的硅/钙控矿岩性界面,层间破碎-糜棱岩化的构造界面,以及酸碱/氧化还原双重地球化学界面,三者叠加成矿控矿,形成矿体呈近于平行的大型带状、厚似层状、大而厚状分布,其矿床成因类型属岩浆期后中低温热液金矿床。

Through study of stratum,structure,magmatic rock and geochemistry of a gold mine in Tajikistan,comprehensive research shows orebody at working area is mainly controlled by mineralization of three interfaces,including silicon/calcium ore-controlling lithologic interface of carboniferous marguzzolar limestone and carbonaceous shale,tectonic interface of interlay fracture– mylonitization,dual geochemical interface of acid-base/oxidation-reduction.The formed orebody is distributed more like a parallel large banded,thick layered and large lens.The orebody belongs to postmagmatic medium-low temperature hydrothermal gold deposit in terms of genetic type.