POSSIBLE EFFECTS OF IRON-OXIDE COATING IN THE RECOVERY OF PARTICULATE GOLD FROM STREAM SEDIMENTS

被引：7
|
作者：
BHEEMALINGESWARA, K
机构：
[1] Department of Geology, University of Delhi, Delhi
来源：
JOURNAL OF GEOCHEMICAL EXPLORATION | 1995年 / 52卷 / 03期
关键词：
D O I：
10.1016/0375-6742(94)00066-K
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
The influence of iron hydroxide/oxide coatings on the recovery of gold was studied using 13 stream sediment samples collected from an area of known gold mineralisation. Magnetic products collected from a Frantz isodynamic separator showed higher gold values than did non-magnetic fractions. An acid-treated magnetic product when run through the isodynamic separator yielded a significant amount of non-magnetic component which, when viewed by binocular microscope, showed the presence of gold grains in both bulk sample and in bromoform-separated heavy mineral concentrate. It is suggested that concentrates are treated with 10% HCl prior to magnetic separation where iron oxide coatings are conspicuous.
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页码：373 / 380
页数：8
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