江西东乡火山盆地成矿规律及找矿方向探讨

Discussion of Metallogenic Regularity and Prospecting Direction of Dongxiang Volcanic Basin in Jiangxi Province

东乡火山盆地为钦杭结合带核心部位中发育的中生代上叠式火山盆地,火山杂岩系广泛分布,具有良好的成矿条件。目前已发现虎圩、柴古垅、上官等多个矿床。通过对东乡火山盆地的地质属性及已发现矿床的成矿地质特征的梳理研究,认为东乡火山盆地深部含有大量的铅锌,具有"上金下铅锌"成矿规律,其深部铅锌矿的体量远远超过了金矿的体量,下一步找矿方向应是深部的铅锌矿。

Dongxiang volcanic basin is a renowned Mesozoic volcanic basin in Jiangxi province with favorable mineralization conditions. Multiple small and medium scale Au-Pb-Zn deposits have been discovered in the basin but yet no large ones, which is out of proportion. The gold ore bodies are mainly proved to be at shallow depth in most operating mines within the area. Recent prospecting work have shown that the deep part contains large quantities of Pb and Zn, far more than the proven reserves of gold, which could be specified as a characteristic of "Au above and Pb-Zn underneath". The next direction of prospecting should be Pb-Zn in deep.