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河北省大营子金矿床成矿流体地球化学特征为 :成矿流体属Na+ -K+ -Ca2 + -Mg2 + -F--Cl-型 ;盐度为中低等 ;成矿温度为 2 80℃ ;成矿压力约为 74 7MPa ;成矿深度约为地下 3km 属中温中深成热液矿床 矿床形成于中性 -弱碱性且丰对还原条件下 ;成矿流体为混合来源 ,为先期岩浆热液叠加了后期地下热卤水所致
The geochemical characteristics of the ore-forming fluids of the Dayingzi gold deposit in Hebei Province are: the ore-forming fluid belongs to Na + -K + -Ca2 + -Mg2 + -F- Cl- type; the salinity is low and middle; the ore-forming temperature is 280 ℃ ; The metallogenetic pressure is about 74 7MPa; the metallogenic depth is about 3km underground. The medium-temperature medium-deep hydrothermal deposit is formed under the neutral-weak alkaline and abundance-reduction conditions. The ore-forming fluid is a mixed source, Hydrothermal superposition caused by the late underground brine