摘要
黄沙钨矿为一大型含多金属硫化物的脉状黑钨矿矿床。本文重点讨论了脉钨矿床的地质特征及成矿流体的性质。脉钨矿化与燕山早期的花岗岩有成因联系。这类花岗岩具有叠加—重熔程度相对较高、酸性较大,K、Na和挥发组分明显增加等特点。成矿可分为两期七个阶段,同期诸阶段具有一次贯入连续演化的特点。根据矿床地质特征,流体包裹体和稳定同位素等研究,我们认为成矿流体是由高成熟度叠加—重熔花岗岩浆熔离而成的一种富SiO_2饱和水及挥发分的熔体。
The Huangsha tungsten deposit is a large vein-type polymetallic sulfide-richwolframite deposit.In this paper, emphasis is placed on the discussion about the geological features and the property of ore-forming fluid of the wolframite quartz-vein. The vein-type tungsten mineralization is genetically related to granites in the early Yanshan episode ( γ23Band γ25C ) . This kind of granites is characterized by relatively high superposed-remelting degree, comparatively high acidity, and obviously increased K, Na and volatile components. The tungsten mineralization is divided into two periods and seven stages. The relation among every mineralization stages of same period is characteristic of once filling and continuous evolution. Based on a large number of geological facts, it is believed that the fluid forming these wolframite quartz-veins is likely derived from superposed-remelting maturity high magma to produce a fluid with enriched SiO2 saturated water and volatile components.
出处
《地球科学（中国地质大学学报）》
EI
CAS
CSCD
北大核心
1989年第4期423-432,共10页
Earth Science-Journal of China University of Geosciences
关键词
钨矿
黑钨矿
石英脉
成矿流体
deposit, superposed-remelting type granite, wolframite quartz-vein, ore-forming fluid, Jiangxi
