摘要
湖南黄沙坪铅锌多金属矿床位于我国南岭构造带中段北缘,骑田岭—千里山多金属矿集区西侧,系南岭成矿带与钦杭成矿带叠加区的一个重要的矿床。在综合其成矿地质背景、矿物共生组合和成矿期次等因素的基础上,重点对黄沙坪矿床Cu-Pb-Zn和W-Mo-Pb-Zn两套矽卡岩成矿系统中闪锌矿元素地球化学特征进行分析反演,推断闪锌矿中存在Fe^2+→Zn 2^+的替换模式,确定该矿床成矿温度为中高温(252℃~261℃),成矿硫逸度条件为中—低硫逸度,综合判断两套成矿系统的成矿环境有所差异,为黄沙坪矿床叠加成矿机制提供新的依据。
Huangshaping lead-zinc polymetallic deposit in Hunan is located at the west of the Qitianling-Qianlishan polymetallic ore field in the northern edge of the middle segment of the Nanling structural belt in China.It is one important deposit in the superposition area of the Nanling and Qinhang metallogenic belts.On the basis of summary of its geological ore-forming background,mineral assemblage and combination and ore-forming period,the paper focuses on the analysis and inversion of zinc geochemisty in the two skarn mineralization systems of Cu-Pb-Zn and W-Mo-Pb-Zn types in Huangshaping deposit.It is inferred for the existence of Fe^2+→Zn^2+substitution pattern in sphalerite,and is confirmed that the ore-forming temperature of the deposit is medium-high temperature(252℃–261℃),and the ore-forming sulfur fugacity condition is medium-low fugacity.It is comprehensively judged that there is a certain difference between two systematic ore-forming environments.A new basis is provided for the superimposed metallogenic mechanism of Huangshaping deposit.
作者
王俊霖
邓安平
张宇
邵拥军
李宏斌
WANG Junlin;DENG Anping;ZHANG Yu;SHAO Yongjun;LI Hongbin(School of Geosciences and Info-physics,Central South University,Changsha 410083,Hunan,China;Huangshaping Mining Branch of Hunan Nonferrous Metals Co.,Ltd.,Chenzhou 424400,Hunan,China)
出处
《矿产与地质》
2020年第1期56-63,共8页
Mineral Resources and Geology
基金
科技部国家重点研发计划项目“钦杭成矿带湘南段铜锡多金属矿产深部探测技术示范”(编号:2018YFC0603900)资助。
关键词
黄沙坪多金属矿
闪锌矿
微量元素
温度
硫逸度
成矿环境
Huangshaping polymetallic deposit
sphalerite
trace element
temperature
sulfur fugacity
metallogenic environment
