安徽省泾县雷塘钼矿点矿化特征及找矿标志研究

Study on Mineralization Characteristics and Prospecting Direction of Leitang Molybdenum Ore Spot in Jingxian County,Anhui Province

雷塘钼矿点为泾县包村—旌德县板桥地区金铜多金属矿资源调查评价区新发现矿点。通过1∶5万钻孔揭露岩体深部发育钼矿化,矿物主要为辉钼矿、黄铁矿等,主要赋存于花岗闪长岩石英细脉中或石英脉边缘,为石英细脉浸染型钼矿石。通过与区内其他类似矿床进行对比研究,发现雷塘钼矿点位于茂林花岗闪长岩体北部边缘地段,茂林岩体的侵入及岩浆期后热液活动为本区矿化富集成矿作用提供了必要的热源,并与构造及热液蚀变都有密切的关系。研究结果表明,雷塘钼矿为中低温热液矿床,矿床类型为斑岩型钼矿床。

Leitang molybdenum ore spot is a new discovery in the gold-copper polymetallic ore resource investigation and evaluation area of Baocun(Jingxian County)—Banqiao(Jingde County)area.1∶50,000 drilling holes revealed that molybdenum mineralization developed in the deep part of the rock mass,and the minerals were mainly molybdenite,pyrite,etc.,which mainly occurred in quartz veins of granodiorite or the edge of quartz veins,and it was quartz veins disseminated molybdenum ore.Compared with other similar deposits in the area,it is found that Leitang molybdenum ore spot is located in the northern edge of Maolin granodiorite body.The intrusion of Maolin rock mass and its post-magmatic hydrothermal activities provided the necessary heat source for the mineralization,enrichment and mineralization in this area,and were closely related to the structure and hydrothermal alteration.Based on the study,it is considered that Leitang molybdenum deposit is a low temperature hydrothermal deposit,and the deposit type is porphyry molybdenum deposit.