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西藏北喜马拉雅马扎拉金锑矿床地质特征及成矿作用张建芳1,2,郑有业1,张刚阳2,龚瑞君0(1.湖北省武汉市地质大学资源学院2.浙江省杭州市浙江省地质调查院)摘 要:马扎拉金锑矿床位于西藏北喜马拉雅金锑成矿带.阐述了马扎拉金锑矿床矿床地质特征,金的赋存状态以及矿床地球化学特征,并对矿床成矿作用进行了探讨.研究结果表明,马扎拉金锑矿床严格受构造及层位的控制,金主要以裂隙金,包裹金和晶隙金3种形式赋存在黄铁矿,辉锑矿,石英及方解石中;流体包裹体类型主要为气液二相包裹体和含CO2三相包裹体,成矿温度在180~350℃之......
crust lead. In sedimentary exhalative stage the ore-forming fluid is an H2O-NaCl system, with medium to low temperature (166-289 ℃), low salinity (4.01%-14.07%) and low density (0.804-0.955 g/cm3......
to low salinity, rich CO2 and mid-temperature fluid system, and the fractionation of CO2 from the ore-forming fluid caused by the fluid immiscibility in main metallogenic stage is the major factor...): 691-712. [11] Collins P L F. Gas hydrates in CO2-bearing fluid inclusions and the use of freeing data for estimation of salinity[J]. Economic Geology, 1979, 74(6): 1435-1444. [12] Bodnar R. Revised......
混溶相分离作用,分离为富CO2和富NaCl-H2O(少量CO2)两种独立的流体. 图7 包裹体均一温度-盐度关系图 Fig. 7 Relationship between homogenization temperature and salinity of fluid inclusions 4.2 成矿压力与成矿深度 卢焕章等[28]认为若在测温片同一视域内同... that the mineralization fluid is characteristic by CO2-bearing, medium-high temperature and low salinity. Based on geological and fluid inclusions characteristics, Liba gold deposit is regarded as carlin-like gold......
in the northwest and central is relatively deep, while that in the northeast is less deep and that in southeast is comparatively shallow. The water salinity in the southeast and northeast is higher......
hydrothermal fluid, belongs to low salinity, medium-low temperature,CO2-rich Ca2+(Na+, K+)-SO42-(Cl-, F-)-H2O-CO2 system. Liyuan Gold Deposit formed in intracontinental orogeny belongs to magmatic......
mineralization episode in Baojinshan gold deposit belongs to low salinity, medium-high temperature, CO2-rich Ca2+(Na+, Mg2+)-SO42-(Cl-, NO3-)-H2O-CO2 system. The calculated metallogenic pressures......
and diagenetic burial goes through B-C substage of the late digenetic stage, water medium is basically alkaline which has high salinity of K+,Fe2+ and Mg2+, and the organic matter is at high and over mature......
and coastal retreat shifting, it has high ground water content and water salinity, through evaporation and capillary action, salt in water would concentrate on the surface or shallow horizon under...; Influence of compaction degree on unconfined compressive strength 3.4 Salinity According to "Specifications for Design of Highway Subgrades"(TJT 013-86)[8]: saline soil is divided into four types......
for hypersaline wastewater, high salinity may lower the microbial metabolism, leading to the death of microorganism due to cell rupture and deterioration of biochemical treatment effects [1]. In addition, it will also lead to a bad influence on microbial flocculation and lower the sedimentation performance of sludge [2]. High salinity will also have negative impacts on the efficiency of organics removal......