论文部分内容阅读
本文对河台金矿测定了形成时的物理化学条件,T=200～280℃,P=573.3×10°Pa,fo_2=10~(-37)—10~(-39),成矿溶液具有Na~+>K~+>Ca~(2+),HCO_3~->Cl~_>F~->ΣS,CO_2>CH_4的特点,从早期到晚期,成矿溶液中的Au与Na~+、K~+、F~-、Cl~-等呈同步增长。在高压釜中不同温度压力下以不同浓度的NaHCO_3、HCl为介质对含金建造进行了淋滤试验;模拟了成矿时的温度压力条件,成功地用硫化物还原出溶液中的金,揭示出硫化物、溶液与还原金的定量关系,并阐述了成矿物质、成矿溶液的来源以及金在成矿溶液中的迁移形式和沉淀机制。
In this paper, the physical and chemical conditions for the formation of Hetai gold deposit were determined. T = 200-280 ℃, P = 573.3 × 10 Pa, and fo_2 = 10- (-37) -10- (-39) The characteristics of Au, Na ~ +> K ~ +> Ca ~ (2 +) and HCO_3 ~ -> Cl ~ _> F ~ -> ΣS and CO_2> CH_4 from early to late stage in the ore- , K ~ +, F ~ -, Cl ~ - showed a synchronous growth. In the autoclave at different temperatures and pressures with different concentrations of NaHCO_3, HCl as a medium for gold-bearing leaching test was carried out; simulated temperature and pressure conditions of mineralization, the successful reduction of gold sulfide solution revealed The quantitative relationship between sulfide, solution and reducing gold was discussed. The origin of metallogenic materials and metallogenic solution and the migration mechanism and precipitation mechanism of gold in ore-forming solution were described.