摘要
高温高压下水岩界面反应与金的迁移富集王玉荣阚小凤王志强（中国科学院广州地球化学研究所，广州５１０６４０）关键词水岩界面反应自发电池实验地球化学本实验以哈达门沟［１］及东坪金矿［２］为地质背景，研究钾长石岩中金矿化富集的物理化学条件。该区金矿既与早期变...
Experimental study on the reactions of 1.0 mol KCl and (0.5 mol KCl+0.5 mol KHCO 3) solutions with mineral mixture(feldspar + biotite+quartz)in gold capsule and at 200～400℃ and 50 MPa was carried out.Results showed that gold was dissolved from the inner wall of the capsule into the solution and then recrystallized on the biotite surfaces.It was observed that the more the gold crystallized the more the biotite was associated on the biotite sufaces.This is considered as a result of the galvanic cell effect,which can be shown as such a process:dissolving on anode-transportating-reducing and depositing on cathode.And this phenomenon reveals a new mechanism of transportation and enrichement of gold .In conclusion,in the process of water rock reaction the electric potential difference on the mineral surface makes gold transported and enriched
出处
《矿物岩石地球化学通报》
CAS
CSCD
1997年第2期33-36,共4页
Bulletin of Mineralogy, Petrology and Geochemistry
关键词
水岩界面反应
自发电池
实验地球化学
water rock interface reaction
galvanic cell
experimental geochemistry
