高校地质学报2016，Vol.22Issue(1)：1-11,11.DOI:10.16108/j.issn1006-7493.2015031
浙江建德铜矿流体包裹体研究
Fluid Inclusion Studies of the Jiande Copper Deposit, Zhejiang Province,China
摘要
Abstract
Jiande copper deposit in Zhejiang Province was found in the 1960, and it is located in the northeastern part of Qinzhou-Hangzhou suture belt between Yangtze and Cathaysia blocks. Research about ore-forming fluids on it is still lacking. This study made a systematic investigation of fluid inclusions in the Jiande copper deposit. Based on petrographic observations of ore-bearing quartz collected from the massive ores, there are three types of primary inclusions of Jiande deposit:two-phase liquid-rich (type Ⅰ), two-phase vapor-rich (type Ⅱ), and halite-bearing (type Ⅲ) fluid inclusions. Type Ⅰ inclusions occur widely in the Jiande deposit and show homogenization temperatures of 220~377℃ and salinities of 0.63~8.00 wt.%NaCl equivalent. Type Ⅱ and type Ⅲ inclusions primarily coexist in ore veins. Homogenization temperatures of type Ⅱ and type Ⅲ reveal peak temperatures at 296~334℃and 290~326℃, respectively, and their salinities at 1.22~2.00 wt.%NaCl and 31.87~38.16 wt.%NaCl, respectively. The results indicate that fluid boiling process took place, and metal precipitation was probably induced by extensive fluid boiling events during the ore stage. Raman analysis of fluid inclusions indicates that, in the gaseous phase, water is dominant with small amount of CO2, CH4, and N2. Our study suggests that the Jiangde copper deposit is a Yanshanian Skarn deposit rather than a Hycernian Sedex Cu deposit.关键词
流体包裹体/显微测温/激光拉曼光谱/建德铜矿/浙江省Key words
fluid inclusion/microthermometry/raman spectroscopy/jiande copper deposit/Zhejiang Province分类
天文与地球科学引用本文复制引用
陈辉,倪培,陈仁义,叶天竺,王国光,张伯声,徐颖峰..浙江建德铜矿流体包裹体研究[J].高校地质学报,2016,22(1):1-11,11.基金项目
国土资源公益性行业科研专项(201411024) （201411024）
中国地质调查局地质调查项目([2014] 04-025-025) （[2014] 04-025-025）
