摘要
前期普查中发现杭州余杭中泰下铜山多金属矿区产有矽卡岩型钨钼多金属矿脉,并有铅锌矿(化)点分布,可能是以矽卡岩型为主,伴有沉积改造型多金属矿床。矿化与化探异常具有较好吻合性,通过聚类分析以及因子分析,成矿区内有Pb-Mo-Zn-Sb,W-Cu-Bi,Sb-Bi,Ag四类元素组合。钨、铋、铜和钼异常,体现高温元素的特点,空间分布上与区内花岗闪长岩密切相关,属甲类异常,目前已发现二条矽卡岩型钨、钼、铋矿脉,找矿潜力巨大;铅、锌(钼)异常与板桥山组第六岩性段(白云岩)有关,呈带状北东向展布,铅和锌异常规模大,多处见铅锌矿(化)脉,属于乙类异常,该异常可能反映未出露的矿化体或在碳酸盐岩风化过程中残余富集铁和锰而形成金属元素的次生富集,需进一步加以确认。
The early survey found the multi metal mine in Xiatongshan Village,Yuhang Zhongtai Township are skarn tungsten and molybdenum polymetallic veins, and has Pb ＆ Zn mineralization distribution, may be dominated by skarn type, with reformed sedimentary polymetallic deposit. Mineralization and geochemical anomaly has good consistency, through cluster analysis and factor analysis, there have Pb-Mo-Zn-Sb, W-Cu-Bi, Sb-Bi and Ag etc four kinds of elements in metallogenic zone . Tungsten, bismuth, copper and molybdenum anomaly, has high temperature element features, the spatial distribution of granite and diorite closely related area, belonging to class A anormaly, has found two skarn tungsten, molybdenum, bismuth ore, with great prospecting potential;Lead, zinc and molybdenum’ s anomaly have relationship with Banqiaoshan group sixth rock section of dolomite, with NE-SW zonal distribution, lead and zinc’s anomaly is large in scale, the lead-zinc mineralized veins can be found in many places, which belongs to the class B anomaly, the anomaly may reflect the unexposed mineralized bodies or in the carbonate rock weathering process of residual concentration of iron and manganese and the formation of metal elements in the secondary enrichment, needs further confirmation.
出处
《科技通报》
北大核心
2014年第5期60-65,71,共7页
Bulletin of Science and Technology
基金
浙江省地质勘查局地勘资金资助:浙地勘发[2013]116号
关键词
矽卡岩
富集系数
元素组合
异常规模
衬度
浓集中心
下铜山
skarn the enrichment factor elements abnormal size contrast the concentration center Xiatongshan Village
