Projects
West Desert
Location and Access
Regional Geology
Property Geology and Mineralization
West Desert Zn-Cu-In Deposit
High Grade Silver
Molybdenum
Resource Estimate
Preliminary Economic Assessment





High Grade Silver


East of the West Desert deposit, silver-rich galena with minor sphalerite and pyrite has been found in steeply dipping, structurally controlled replacement zones within the Ordovician carbonates. One of these was historically exploited by the adjacent Utah and Galena mines. A total of about 4,875 metres of interconnected workings on six levels were accessed via two shafts. Minor production of similar mineralization from parallel structures was derived from the Emma mine and to a much lesser extent from a number of other small excavations. The total production from the Fish Springs district between 1890 and 1953, the bulk of which was derived from the Utah, Galena and Emma mines, is recorded at 17,292,796 pounds of lead, 2,800 pounds of zinc, 5,366 pounds of copper, 508 ounces of gold and 2,658,220 ounces of silver from 20,303 tons of ore.

A deep drill hole (CC-43) completed by Utah below the Utah mine workings intersected a 2.87 metre interval grading 6.8% Zn, 3.8% Pb and 167.1 gpt Ag approximately 230 metres below the lowermost mine level, indicating that mineralization continues to depth. Although another hole drilled here by Lithic intersected a thin bed of un-reactive and barren quartzite where mineralization was projected through, the potential to find mineralization in the immediately adjacent carbonate rocks remains good.

Although silver mineralization was not otherwise targeted in the 2007-2008 program, Lithic drill holes C07-03 and C08-11 intersected significant intervals of replacement-style silver-zinc-lead mineralization between the West Desert Main zone and the Utah mine. Numerous other intervals of high-grade silver mineralization outside of the Utah mine area were encountered in historical drilling. These intercepts suggest significant potential for additional high-grade silver mineralization east of the main West Desert deposit and similar to but distinct from that mined historically at the Utah mine.

Hole From To Metres gpt Ag opt Ag % Zn % Pb
C07-03
25.30
30.94
5.64
136.0
4.0
3.78
0.33
C08-11
172.91
218.70
45.79
124.1
3.6
2.78
0.76
incl
193.99
204.82
10.83
253.8
7.4
4.28
0.68
CC-27
223.97
227.53
3.56
361.5
10.5
10.19
12.95
CC-29
345.19
353.75
8.56
131.5
3.8
10.53
1.28
CC-34
62.18
72.39
10.21
207.8
6.1
12.81
0.98

 

East of the West Desert deposit, silver-rich galena with minor sphalerite and pyrite has been found in steeply dipping, structurally controlled replacement zones within the Ordovician carbonates. One of these was historically exploited by the adjacent Utah and Galena mines. A total of about 4,875 metres of interconnected workings on six levels were accessed via two shafts. Minor production of similar mineralization from parallel structures was derived from the Emma mine and to a much lesser extent from a number of other small excavations. The total production from the Fish Springs district between 1890 and 1953, the bulk of which was derived from the Utah, Galena and Emma mines, is recorded at 17,292,796 pounds of lead, 2,800 pounds of zinc, 5,366 pounds of copper, 508 ounces of gold and 2,658,220 ounces of silver from 20,303 tons of ore.

A deep drill hole (CC-43) completed by Utah below the Utah mine workings intersected a 2.87 metre interval grading 6.8% Zn, 3.8% Pb and 167.1 gpt Ag approximately 230 metres below the lowermost mine level, indicating that mineralization continues to depth. Although another hole drilled here by Lithic intersected a thin bed of un-reactive and barren quartzite where mineralization was projected through, the potential to find mineralization in the immediately adjacent carbonate rocks remains good.

Although silver mineralization was not otherwise targeted in the 2007-2008 program, Lithic drill holes C07-03 and C08-11 intersected significant intervals of replacement-style silver-zinc-lead mineralization between the West Desert Main zone and the Utah mine. Numerous other intervals of high-grade silver mineralization outside of the Utah mine area were encountered in historical drilling. These intercepts suggest significant potential for additional high-grade silver mineralization east of the main West Desert deposit and similar to but distinct from that mined historically at the Utah mine.

Hole From To Metres gpt Ag opt Ag % Zn % Pb
C07-03
25.30
30.94
5.64
136.0
4.0
3.78
0.33
C08-11
172.91
218.70
45.79
124.1
3.6
2.78
0.76
incl
193.99
204.82
10.83
253.8
7.4
4.28
0.68
CC-27
223.97
227.53
3.56
361.5
10.5
10.19
12.95
CC-29
345.19
353.75
8.56
131.5
3.8
10.53
1.28
CC-34
62.18
72.39
10.21
207.8
6.1
12.81
0.98