河北邢台地区脉石英矿的包裹体研究

以河北邢台地区优质的脉石英矿为研究对象,在光学显微镜、化学成分等对脉石英矿研究的基础上对石英中流体包裹体进行了岩相学、测温及成分分析,结果表明:石英中SiO2的含量高达99.979%,石英颗粒内普遍可见流体包裹体,以气液两相为主,少量的气相、液相和三相包裹体.拉曼分析显示气相和液相成分分别为CO2、H2 O.测温结果显示其均一温度为143~247℃,平均温度为196℃,三相包裹体中子晶的溶解温度为160~180℃,对应矿物为三水菱镁矿.认为该石英矿的成矿流体为中低温的热液.

Inclusions of Vein Quartz Ore in Xingtai Area of Hebei Province

High quality vein quartz ore in Xingtai area of Hebei Province was studied .The fluid inclusions in quartz were analyzed by petrography , temperature measurement and composition analysis on the basis of optical microscopy and chemical composition .The results show that the content of SiO 2 in the quartz is as high as 99 .979%, and the fluid inclusions can be generally observed in the quartz grains , mainly in the state of gas-liquid two phases , and a small amount of gas , liquid and three-phase inclusions .Raman analysis show that the gas and liquid components are CO 2 , H2 O.The results show that the homogeneous temperature is 143-247 ℃, the average temperature is 196 ℃, the solubility of the neutron inclusions in three-phase inclusions is 160-180 ℃, and the corresponding mineral is nesquehonite .The ore-forming fluids of the quartz ore are considered to be medium-low temperature hydrothermal fluids .