矿床地质2012，Vol.31Issue(4)：917-929,13.
浙江安吉港口多金属矿床铅物质来源初探——铅同位素证据
A preliminary study of source of lead in Gangkou polymetallic deposit, Anji,Zhejiang Province: Lead isotope evidence
摘要
Abstract
Lying in northwest Zhejiang Province, the Gangkou Pb-Zn-Ag(-Mo) polymetallic deposit in Anji is a recently discovered deposit at the northeast edge of the Qinzhou-Hangzhou metallogenic belt. Lead isotope compositions of galena grains frofn the deposit are all rich in radiogenic J-type lead. In V1-V2 diagram and △γ-△β diagram, all the samples fall in Souch China geochemical province and upper crust mixed with mantle lead related to magmatism respectively. The lead isotope composition of galena has 208Pb/206Pb ratios for the fine-grained granite, 208pb/206Pb ratios for the mixing of fine-grained granite and Wushanguan complex, and the 208Pb/204Pb and 208Pb/206Pb ratios approximately for the fine-grained granite. The contour lines of lead isotope suggest that the fine-grained granite probably provided most of the lead source for galena, whereas part of 2 Pb and 206Pb was from Wushanguan complex and part of 208Pb was from Cambrian Formation in the ore district. Exploration around the fine-grained granite at Gangkou in Anji might lead to further achievements.关键词
地球化学/铅锌多金属矿/铅同位素/成矿物质来源/安吉Key words
geochemistry, lead-zinc polymetallic deposit, lead isotope, mineralization material source, Anji分类
天文与地球科学引用本文复制引用
李应栩,谢玉玲,唐燕文,张欣欣,邱立明..浙江安吉港口多金属矿床铅物质来源初探——铅同位素证据[J].矿床地质,2012,31(4):917-929,13.基金项目
本文受科技部公益性行业科研专项经费(201011011-01)和"十二·五"科技支撑计划(2011BAB04B02)联合资助 （201011011-01）
