集安正岔铅锌矿床成因讨论  

Discussion on the causes of Ji'an Zhengcha Pb-Zn deposit

作　　者：赵华伟[1] 臧兴运[1] 宋爽 马春生[1] ZHAO Hua-wei;ZANG Xing-yun;SONG Shuang;MA Chun-sheng(Institute of Geological Investigation of Jilin Province,Changchun 130102,Jilin,China;Institute of Exploration and Development for Geological and Mineral Resources of Jilin Province,Chang chun 130061,Jilin,China)

机构地区：[1]吉林省地质调查院,吉林长春130102 [2]吉林省地质矿产勘查开发研究院,吉林长春130061

出　　处：《吉林地质》2018年第2期52-55,共4页Jilin Geology

摘　　要：正岔铅锌矿床已发现铅锌矿体48条,大部分赋存于集安群荒岔沟组中,并随着地层的变形而变形,矿石类型为层控型铅锌矿,矿物组合以方铅矿、闪锌矿和黄铜矿为主。少部分铅锌矿体赋存于早白垩世花岗斑岩接触带上,矿石类型为矽卡岩型铅锌矿,矿物组合主要为方铅矿与闪锌矿。结合区域资料,认为本矿床主要形成于古元古代末沉积变质作用,并叠加早白垩世矽卡岩化成矿作用。48 pieces of Pb-Zn ore bodies have been found in Zhengcha Pb-Zn deposit, Most of them are stored in Huangchagou Formation of Ji＇an Group, and deformed along with the deformation of the stratum. The ore type is Pb-Zn deposit of stratabound type, the main mineral assemblage are galena, sphalerite and chalcopyrite. A few parts Pb-Zn ore deposit occur host in the contact zone of granite porphyry of Early Cretaceous, the ore type is skarn type, the main mineral assemblage are galena and sphalerite. Combining with the regional data, the authors think that this deposit is mainly formed in diagenism of Late Paleoproterozoic, and superimposed the mineralization of skarn in Early Cretaceous.

关 键 词：荒岔沟组 沉积变质 矽卡岩化 铅锌矿 

分 类 号：P618.42[天文地球—矿床学]