- The deposit in total is now estimated to contain 200 million pounds of copper, 180,000 ounces of gold, 2.94 million ounces of silver and 74 million pounds of zinc*
- The underlying enriched supergene zone is estimated to contain 158 million pounds of copper with an average grade of 5.15% copper*
- Within the copper supergene zone there is a zone of high-grade copper estimated to contain 41 million pounds with an average grade of 16.0% copper*
- The surface oxide gold cap (oxide and transition zones) contains 83,000 ounces of gold at an average grade of 2.38 g/t gold*
The Debarwa deposit is a copper/gold/zinc VMS deposit that is approximately 8 by 30 metres in width and dips to the west at about 50 to 60 degrees. Drilling has defined mineralization over a strike length of more than 1,000 metres and down to about 250 metres from surface. The main body of mineralization consists of three zones, the gold gossan zone at surface underlain by a zone of supergene enrichment with high-grade copper, gold and silver underlain by a zone of zinc rich primary sulphides.
Location
Debarwa is located approximately 25 kilometres south of the capital city of Asmara and is accessible by paved roads with excellent infrastructure.
Resource
The current NI43-101 compliant resource was completed on August 18, 2011 by AMC Consultants Pty Ltd.
Debarwa Measured & Indicated Resources
Material |
Cut-off |
Tonnes |
Copper |
Zinc |
Gold |
Silver |
|---|---|---|---|---|---|---|
Type |
(%) |
(%) |
(g/t) |
(g/t) |
||
Oxide |
Au 0.5g/t |
371,000
|
0.06
|
0.04
|
1.47
|
6
|
Transition |
Au 0.5g/t |
720,000
|
0.08
|
0.05
|
2.85
|
27
|
Supergene |
Cu 0.5% |
1,389,000
|
5.15
|
0.07
|
1.40
|
33
|
Primary (Cu) |
Cu 0.5% |
774,000
|
2.34
|
3.92
|
1.30
|
29
|
Primary (Zn) |
Zn 2.0% (<0.5% Cu) |
58,000
|
0.36
|
3.05
|
1.24
|
22
|
Totals |
3,312,000
|
|||||
Debarwa Measured Resources
Material |
Cut-off |
Tonnes |
Copper |
Zinc |
Gold |
Silver |
|---|---|---|---|---|---|---|
Type |
(%) |
(%) |
(g/t) |
(g/t) |
||
Oxide |
Au 0.5g/t |
300 |
0.01
|
0.01 |
1.03 |
4
|
Transition |
Au 0.5g/t |
103,000 |
0.07 |
0.03 |
4.59
|
90
|
Supergene |
Cu 0.5% |
321,000
|
11.63 |
0.007
|
2.58
|
65
|
Primary (Cu) |
Cu 0.5% |
7,000 |
2.39 |
5.97 |
1.32
|
26
|
Primary (Zn) |
Zn 2.0% (<0.5% Cu) |
|||||
Totals |
434,000
|
|||||
DebarwaIndicated Resources
Material |
Cut-off |
Tonnes |
Copper |
Zinc |
Gold |
Silver |
|---|---|---|---|---|---|---|
Type |
(%) |
(%) |
(g/t) |
(g/t) |
||
Oxide |
Au 0.5g/t |
368,000 |
0.06 |
0.05 |
1.47 |
6 |
Transition |
Au 0.5g/t |
617,000 |
0.08 |
0.06 |
2.55 |
17
|
Supergene |
Cu 0.5% |
1,068,000 |
3.21 |
0.08 |
1.04
|
23 |
Primary (Cu) |
Cu 0.5% |
767,000 |
2.34 |
3.90 |
1.30
|
29
|
Primary (Zn) |
Zn 2.0% (<0.5% Cu) |
58,000 |
0.36 |
3.05 |
1.24 |
22 |
Totals |
2,878,000
|
|||||
DebarwaInferred Resources
Material |
Cut-off |
Tonnes |
Copper |
Zinc |
Gold |
Silver |
|---|---|---|---|---|---|---|
Type |
(%) |
(%) |
(g/t) |
(g/t) |
||
Oxide |
Au 0.5g/t |
239,000 |
0.01 |
0.1 |
1.1 |
5 |
Transition |
Au 0.5g/t |
138,000 |
0.01 |
0.0 |
1.4 |
22
|
Supergene |
Cu 0.5% |
144,000 |
2.7 |
0.1 |
0.6 |
31 |
Primary (Cu) |
Cu 0.5% |
154,000 |
1.2 |
3.6 |
2.6
|
41
|
Primary (Zn) |
Zn 2.0% (<0.5% Cu) |
6,000 |
0.4 |
3.3 |
1.1 |
21 |
Totals |
||||||
High-Grade Copper Supergene Zone
Cut-off (%Cu) |
Tonnes |
Copper (%) |
Zinc (%) |
Gold (%) |
Silver (%) |
|---|---|---|---|---|---|
10 |
155,000 |
14.8 |
0.06 |
2.88 |
74 |
11 |
138,500 |
15.3 |
0.05 |
2.91 |
75 |
12 |
115,900 |
16.0 |
0.05 |
3.00 |
77 |
13 |
95,900 |
16.8 |
0.05 |
2.99 |
80 |
14 |
68,100 |
18.2 |
0.05 |
3.07 |
81 |
