浅成低温热液金矿床中金、钯溶解性状的实验研究  

EXPERIMENT ON Au-Pd SOLUBILITY OF EPITHERMAL GOLD DEPOSIT

作　　者：卫万顺[1] 刘贵阁[1] 刘志杰[1] 邢俊兵[1] 

机构地区：[1]武警黄金地质研究所

出　　处：《地质与勘探》1999年第1期26-29,共4页Geology and Exploration

摘　　要：在ｐＨ２Ｏ为１００×１０５Ｐａ，ｐＨ为８．５的０．５ＭＮａＨＣＯ３＋０．０１ＭＫ２ＳＯ４溶液中花岗斑岩的Ａｕ、Ｐｄ溶解实验表明，温度在１００℃时有利于Ａｕ的溶解，２５０℃时有利于Ｐｄ的溶解。在ｐＨ２Ｏ为１００×１０５Ｐａ、２００℃条件下，随着压力的升高，Ａｕ的浸出率有升高的趋势，Ｐｄ浸出率则呈降低的趋势。随着原岩样品中Ａｕ品位的降低，Ａｕ的浸出率呈十倍速度增加。The experiment under condition of p H 2O of 100×10 5 P a and pH of 8.5 for 0.5 M NaHCO 3 + 0.1 M K 2SO 4 solution indicates that Au at 100℃ and Pd is considerably soluble at 250 ℃. Under the condition of p H 2O of 100×10 5 Pa at 200℃, Au e xtraction intends to increase and Pd extraction intends to decrease with pressur e asce nding. With descending of Au content of crude ore samples, Au extraction increas e by ten times, but Pd extraction remains stable.

关 键 词：浅成低温 金矿床 实验研究 金 钯 溶解性状 

分 类 号：P618.510.4[天文地球—矿床学]