沅麻盆地西南缘凤凰-麻阳白垩系红层中脉状铅锌矿控矿条件
ORE-CONTROLLING CONDITIONS OF THE VEIN-TYPE LEAD-ZINC DEPOSITS IN THE CRETACEOUS RED BEDS IN FENGHUANG-MAYANG AREA IN THE SOUTHWEST EDGE OF YUANMA BASIN
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摘要: 沅麻盆地为一中生代断陷盆地,盆地西缘铅锌矿点较多.矿床(点)类型为赋存于白垩系红层砂岩-砾岩中脉状铅锌矿,具有规模较大、品位较高、矿石选冶性能良好等特点.对凤凰-麻阳地区白垩系红层中脉状铅锌矿(点)特征及控矿条件进行分析、归纳、总结.加强对区内铅锌矿控矿条件的研究,对促进区内铅锌矿的找矿勘查具有重要意义.Abstract: The Yuanma basin is a Mesozoic fault basin, with many lead and zinc mineralized occurrences in the western edge. The deposits are in vein type hosted in the sandstone-conglomerate of Cretaceous red beds, in large size, with high grade and easily dressing and smelting ores. The characteristics of the deposits and ore-controlling conditions are analyzed. It is significant for the mineral exploration in the area.