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Whether particular gold ore is leachable with cyanide (3 replies and 1 comment)
|
SAMPLE |
TYPE |
Location |
Au |
Cu |
Ni |
Co |
Zn |
Pb |
MnO% |
Fe2O3% |
|
AM 4 |
Basalt |
River Solo |
- |
54 |
50 |
65 |
300 |
20 |
0.114 |
8.571 |
|
AM 16 |
Basalt |
28-subdrive |
- |
83 |
30 |
41 |
200 |
30 |
0.692 |
16.000 |
|
AM 17 |
Basalt |
28-subdrive |
- |
38 |
20 |
38 |
320 |
20 |
0.485 |
10.571 |
|
AM 23 |
Basalt |
45N-drive |
- |
1640 |
330 |
105 |
1840 |
120 |
0.294 |
8.000 |
|
AM 24 |
Quartz vein |
45N-drive |
4.8 |
183 |
20 |
127 |
4920 |
180 |
0.046 |
0.571 |
|
AM 33 |
Basalt |
28S/N-drive |
0.1 |
103 |
80 |
55 |
560 |
30 |
0.687 |
19.143 |
|
AM 34 |
Basalt/Quartz vein |
28S/N-drive |
2.1 |
92 |
10 |
87 |
220 |
120 |
0.235 |
5.143 |
|
AM 36 |
Basalt |
28-subdrive |
0.7 |
290 |
40 |
45 |
440 |
40 |
0.349 |
9.714 |
|
AM 38 |
Basalt |
28-subdrive |
- |
198 |
100 |
53 |
200 |
70 |
0.367 |
8.286 |
|
AM 40 |
Basalt/Quartz vein |
28-subdrive |
6.8 |
80 |
40 |
58 |
200 |
460 |
0.183 |
7.143 |
|
AM 81 |
Granite |
Buteba |
- |
3 |
10 |
45 |
180 |
40 |
0.026 |
0.857 |
|
AM 83 |
Granite |
Buteba |
- |
3 |
10 |
77 |
100 |
40 |
0.031 |
1.429 |
Table 9: AAS analysis (in ppm except MnO and Fe2O3) of rock samples from Tira underground mine, Buteba and River Solo
|
SAMPLE |
TYPE |
Au |
Ag |
Cu |
Ni |
Zn |
Pb |
MnO% |
|
AM 9 |
Rv |
2.0 |
2.0 |
119 |
110 |
72 |
90 |
0.338 |
|
AM 66 |
Sl (pit) |
0.8 |
1.0 |
43 |
40 |
131 |
40 |
0.039 |
|
AM 72 |
Sl (pit) |
6.8 |
1.5 |
108 |
90 |
330 |
620 |
0.170 |
|
AM 84 |
Rv |
38.6 |
3.0 |
366 |
60 |
234 |
1250 |
0.279 |
|
AM 87 |
Rv |
30.4 |
2.5 |
204 |
60 |
356 |
990 |
0.351 |
|
AM 90 |
Rv |
19.4 |
2.5 |
106 |
80 |
87 |
250 |
0.157 |
|
AM 92 |
Rv |
3.6 |
0.5 |
78 |
90 |
52 |
40 |
0.085 |
|
AM 93 |
Rv |
4.4 |
0.5 |
95 |
100 |
80 |
50 |
0.392 |
|
AM 123 |
Sl |
0.6 |
0.5 |
105 |
110 |
92 |
50 |
0.238 |
|
AM 129 |
Sl |
0.8 |
0.5 |
107 |
120 |
76 |
20 |
0.150 |
|
AM 131 |
Sl |
0.4 |
1.0 |
96 |
120 |
96 |
30 |
0.108 |
|
AM 133 |
Sl |
0.4 |
1.0 |
58 |
90 |
67 |
30 |
0.046 |
|
AM 135 |
Sl |
1.6 |
0.5 |
31 |
60 |
40 |
30 |
0.044 |
|
AM 139 |
Sl |
0.4 |
1.0 |
89 |
100 |
96 |
30 |
0.145 |
|
AM 187 |
Sl |
4.8 |
- |
111 |
110 |
73 |
30 |
0.183 |
Table 7: AAS analyses of soil and stream sediment samples from the study area (Trace element values in ppm).
I would recommend a diagnostic leach test on the samples. This test will show you the gold associations and determine what portion is leachable with cyanide. Alternatively you could just do some BLEG tests (bulk leach extractable gold) or simple bottle rolls. I would composite samples in a manner that is consistent with ore types and mineralogy. In general most gold is leachable it just depends on the association (occluded by quartz or sulfides,...). The copper in these ores may present some challenges but you wont know until you test it. If you need assistance let me know we can help with test work and the approach to this ore.
Regards
Todd
Todd Harvey - Global Resource Engineering http://www.global-resource-eng.com
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Hi. Ive attached sample gold ore sample results. I would like to know whether its leachable with cyanide.