浙江省桐村钼矿床Re—Os同位素年龄及地质意义

浙江桐村斑岩型钼矿床位于钦杭成矿带东段，紧邻赣东北成矿带，矿床的形成与燕山早期侵入的同熔型花岗岩有关，含矿岩体的成岩年龄165～168Ma。辉钼矿矿石呈浸染状产于岩体内部或岩体与围岩的接触带。本文首次对矿床中3件辉钼矿样品进行了Re—Os同位素年代学研究，测得辉钼矿的等时线年龄为162．2Ma±1．3（MSWD=0．006），代表了成矿年龄。成矿成岩年龄具有一致性，矿床成因类型为斑岩一矽卡岩型钼（铜）矿床。...

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Published in地质与勘探 Vol. 49; no. 1; pp. 50 - 57
Main Author 张世铭 肖渊甫 王强 张雪辉 杨玲 王瑜亮 张春茂
Format Journal Article
LanguageChinese
Published 2013
Subjects
成矿物质来源
桐村斑岩型钼矿辉
浙西地区
钼矿Re—Os同位素年龄
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Summary:浙江桐村斑岩型钼矿床位于钦杭成矿带东段，紧邻赣东北成矿带，矿床的形成与燕山早期侵入的同熔型花岗岩有关，含矿岩体的成岩年龄165～168Ma。辉钼矿矿石呈浸染状产于岩体内部或岩体与围岩的接触带。本文首次对矿床中3件辉钼矿样品进行了Re—Os同位素年代学研究，测得辉钼矿的等时线年龄为162．2Ma±1．3（MSWD=0．006），代表了成矿年龄。成矿成岩年龄具有一致性，矿床成因类型为斑岩一矽卡岩型钼（铜）矿床。
Bibliography:11-2043/P
ZHANG Shi -ming , XIAO Yuan -fu , WANG Qiang1 , ZHANG Xue -hui2, YANG Ling3 , WANG Yu - liang1 , ZHANG Chun - mao~ （ 1. Chengdu University of Technology, Chengdu,Sichuan 610059;2. Nanfing Institute of Geology and Mineral Resources, Nanjing, Jiangsu 210016; 3. Jiangxi Bureau of Exploration and Development of Geology ＆ Mineral Resources, Nanchang,Jaingxi 330002）
The Tongcun porphyry molybdenum deposit is located in the east section of the Qinzhou-Hangzhou metallogenic belt, close to the large- scale mineralized concentration area in northeastern Jiangxi Province. The formation of the deposit is related to the syntectiegranite which invaded in the early Yanshan period. The mineralization age of the granite is 165 - 168Ma. The disseminated molybdenite occurs in the contact zone between the intru- sion and alteration zone. Re-Os isotopic age of the three molybdenite samples was measured for the first time, yielding 187 Re - 187 Os isochron age of mo- lybdenite as 161.8 ± 2.2Ma（ MSWD = 0. 006 ）, representin
ISSN:0495-5331