寻甸县河口地区铅锌矿化特征及矿床对比

THE PB-ZN METALLOGENESIS FEATURE AND CORRELATION IN HEKOU AREA OF XUNDIAN

云南寻甸县河口地区三个铅锌矿化带,均沿断层构造破碎带展布,矿化带岩性多为白云岩白云质灰岩,重晶石化为之最主要的矿化蚀变,而铅锌矿中富铅贫锌特征明显。将河口地区铅锌矿化带与滇东北已知铅锌矿床进行对比。发现两者间不论构造控矿关系,还是容矿岩层、隔挡层和矿化特征都存在较多的共同特点,类比展示了河口地区有较好的成矿远景。

The 3 P b-Z n metallogenesis zones in Hekou area o f X u n d ia n, Yunnan are dis tribu te d along the fault fracture zone. The rocks in metallogenesis zone are mainly the d o lom it ite, do lomit ic l im es ton e, the most main alteration of metallogenesis is b a r it iza t io n. The feature r ic h in Pb and poor in Zn in the deposit is c le a r. Accordingto the correlation between the P b -Z n metallogenesis zone in Hekou area and the known Pb-Z n deposit in NE Y u n-nan ,we have discovered there are many common characteristics in eith er ore control o f structure relat ionship or ore-bearing rock bed,b lo c k in g layer and metallogenesis fe a tu re, w h ich shows that the metallogenesis po tent ia lity in Hekou area is good.