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用斜长石、黑云母等单矿物或斜长石+黑云母+石英的矿物组合与KCl溶液或KCl+KHCO3溶液在150-400℃, 50-80 MPa条件下进行反应. 实验显示碱性流体对斜长石蚀变形成钾长石有利, 而酸性流体对斜长石、钾长石、黑云母蚀变形成绢云母和绿泥石有利. 反应后溶液的酸碱度往往向相反方面转变. 实验中观察到反应器皿金管上的金溶解后到黑云母或黄铁矿表面重结晶, 并同时出现赤铁矿. 因此, 金的迁移、富集与流体-矿物界面形成原电池效应有关. Fe3+-Fe2+是氧化-还原剂. Cl?和CO2是重要的挥发组分.
The mineral combination of plagioclase, biotite and other single minerals or plagioclase + biotite + quartz is reacted with KCl solution or KCl + KHCO3 solution at 150-400 ℃ and 50-80 MPa.The experiments show that the alkaline fluid The alteration of plagioclase feldspar is favorable for K-feldspar, while the acid fluid is favorable for the alteration of sericite and chlorite to plagioclase, K-feldspar and biotite, and the pH value of the solution often changes in the opposite direction after the reaction It is observed that the gold on the reaction vessel is dissolved to the surface of biotite or pyrite, and the hematite reacts with it at the same time, so the migration and enrichment of gold are related to the formation of galvanic cell effect on the interface of fluid and mineral.Fe3 + -Fe2 + Is an oxidation-reduction agent. Cl and CO2 are important volatile components.