Page 101 - Geochemical Remote Sensing of The Sub-Surface

78 O.F. Putikov and B. Wen

FeZ+

Q2

0 +1.0 +2.0
q),V

Fig. 2-54. Logging polarograms of natural water at the site of underground leaching of uranium
ore: 1-3- cathodic polarograms; 4- anodic polarogram (reproduced with permission from Putikov,
1993).

~ Mn2+
I A I B

V02,~ V02

f .- I I .... ~ ! . I
0 -0.5 -1.0 0 -0.5 -1.0 -1.5
q~,V q~,V

Fig. 2-55. Dependence of shape of cathodic PL polarogram on depth at site of underground
leaching of uranium ore: (A) borehole 7 (sensitivityl0 6 A) at 1- 90 m, 2- 95 m, 3- 103 m; (B)
borehole 3H (sensitivity 10 .6 A) at 4- 90 m, 5- 98 m, 6- 104 m, 7- 107 m and (sensitivityl0 5 A) at
8- 98 m.

DISCUSSION AND CONCLUSIONS

Geoelectrochemistry found wide application in the 1970s and 1980s in the
exploration of copper-nickel sulphides, lead-zinc sulphides and polymetallic deposits in
the Rudny Altay, Kola Peninsula, Caucasus, Orenburg and Pacific coastal regions of
Russia, and in Kazakhstan, Uzbekistan, Tajikistan. By using the CPC method for
evaluation of geophysical anomalies, some hundreds of small mineral occurrences were
very quickly eliminated and exploration expenses on promising targets were reduced by