现代地质2016，Vol.30Issue(2)：328-340,13.
豫西熊耳山地区上道回钼矿床地质及流体包裹体研究
Characteristics of Ore Geology and Fluid Inclusions of the Shangdaohui Mo Deposit in the Xiong’ershan Region,Western Henan
摘要
Abstract
The Shangdaohui Mo deposit is located in the Xiong’ershan-Waifangshan region which is in the southern margin of the North China Craton.The orebodies,controlled by the secondary fault of the Machaoying fault,occur as veins and are hosted by the Mesoproterozoic intermediate to felsic volcanic rocks of the Xiong’er Group.The major metallic minerals are molybdenite and pyrite.The silicification,K-felsparization and carbona-tization are the main hydrothermal alteration types.The hydrothermal ore-forming process can be divided into three stages,quartz +pyrite stage (early stage),quartz +molybdenite +polymetallic sulfide stage (middle stage)and quartz +calcite stage (late stage).Three types of fluid inclusions can be identified in the Shangdao-hui Mo deposit,including aqueous (W-type),CO2-rich (C-type),daughter mineral-bearing (S-type)fluid in-clusions.The early stage quartz contains mostly W-type,C-type and minor S-type fluid inclusions,the middle stage quartz contains C-type,W-type and S-type fluid inclusions,and the late stage calcite only contains the W-type fluid inclusions.The homogenization temperatures of early-stage fluid inclusions range from 21 0 ℃ to 390 ℃,with salinity of 1 .0% -1 3.4% and 27.2% -33.2%.The middle-stage homogenization temperature is 1 80 ℃ to 300 ℃,with salinity of 0.3% -1 4.1 % and 27.3% -28.5%,and the last-stage homogenization temperature ranges from 1 20 ℃ to 220 ℃,with salinity 0.1 % -1 4.2%.The ore-forming fluid evolved from carbonic to aqueous from early to late mineralization stage.Fluid boiling occurred in both early and middle sta-ges,and resulted in release of CO2 ,which caused the precipitation of the MoS2 and other sulfides.Trapping pressures estimated according to the C-type fluid inclusions are 1 48 -371 MPa and 1 08 -383 MPa in the early and middle stages,corresponding to metallogenic depth of 5 -1 4 km.关键词
上道回钼矿/钾长石 -石英脉型/地质特征/流体包裹体/熊耳山地区/豫西Key words
Shangdaohui Mo deposit/K-feldspar-quartz vein type/geological characteristics/fluid inclusion/Xiong'ershan region/western Henan分类
天文与地球科学引用本文复制引用
王文博,张静,陈良,李雷,苏蔷薇,王琦崧..豫西熊耳山地区上道回钼矿床地质及流体包裹体研究[J].现代地质,2016,30(2):328-340,13.基金项目
国家自然科学基金项目（41030423）；五矿勘查开发有限公司科技找矿项目；中央高校基本科研业务费专项资金项目（2652013017）。 （）
