|
Metallurgical Drill
Hole Results, Bisha, Eritrea
February 2, 2006
METALLURGICAL DRILL HOLE
RESULTS, BISHA,
ERITREA
Nevsun Resources Ltd. (NSU-TSX and AMEX) (“The Company”) is pleased
to
announce the results of assaying from drill
holes specifically put down to obtain a bulk
sample for metallurgical purposes. The drill
program took part in two phases in 2005.
Although preliminary test results having
been recently released in the Bisha Scoping
Study carried out by AMEC Americas Limited,
additional metallurgical test work will be
completed in conjunction with the Bisha
Feasibility Study currently being
completed. Metallurgical test work for both
the Scoping Study and the Feasibility Study
is being carried out at SGS Lakefield.
Metallurgical Drill Hole Assays
A summary
of significant assay intervals follows:
|
Hole # |
Domain |
From |
To |
Meters |
Au g/t |
Ag g/t |
%
Cu |
%
Zn |
|
Met-05-01 |
oxide |
30.0 |
36.0 |
6.0 |
8.15 |
94.20 |
- |
- |
|
|
supergene |
42.0 |
68.5 |
26.5 |
- |
- |
2.11 |
- |
|
|
primary |
67.5 |
157.5 |
90.0 |
- |
- |
1.33 |
5.53 |
|
|
primary |
157.5 |
202.5 |
45.0 |
- |
- |
1.07 |
1.13 |
|
Met-05-02 |
supergene |
55.5 |
70.0 |
14.5 |
- |
- |
0.46 |
1.27 |
|
|
primary |
70.0 |
112.0 |
42.0 |
- |
- |
0.35 |
1.75 |
|
|
primary |
175.7 |
247.0 |
71.3 |
- |
- |
0.71 |
9.24 |
|
|
primary |
247.0 |
255.4 |
8.4 |
- |
- |
0.92 |
3.00 |
|
Met-05-03 |
oxide |
3.0 |
33.0 |
30.0 |
6.09 |
|
- |
- |
|
|
supergene |
40.5 |
82.5 |
42.0 |
- |
- |
4.41 |
- |
|
|
primary |
82.5 |
123.3 |
40.8 |
- |
- |
0.02 |
1.12 |
|
Met-05-04 |
oxide |
0.0 |
36.0 |
36.0 |
3.36 |
- |
- |
- |
|
|
supergene |
40.5 |
84.0 |
43.5 |
- |
- |
1.23 |
- |
|
Met-05-05 |
supergene |
34.5 |
50.5 |
16.0 |
- |
- |
9.04 |
- |
|
|
primary |
50.5 |
109.0 |
58.5 |
- |
- |
2.29 |
7.31 |
|
|
primary |
109.0 |
115.0 |
6.0 |
- |
- |
2.15 |
2.00 |
|
Hole # |
Domain |
From |
To |
Meters |
Au g/t |
Ag g/t |
%
Cu |
%
Zn |
|
Met-05-06 |
oxide |
22.0 |
34.5 |
12.5 |
3.18 |
19.80 |
- |
- |
|
|
supergene |
34.5 |
62.5 |
28.0 |
- |
- |
9.14 |
- |
|
|
primary |
62.5 |
89.5 |
27.0 |
- |
- |
1.95 |
7.04 |
|
|
primary |
89.5 |
125.0 |
35.5 |
- |
- |
2.16 |
1.96 |
|
|
Stringer sulphides |
125.0 |
145.0 |
20.0 |
- |
- |
0.69 |
0.27 |
|
Met-05-07 |
oxide |
31.5 |
42.0 |
10.5 |
5.48 |
6.64 |
- |
- |
|
|
supergene |
42.0 |
68.5 |
26.5 |
- |
- |
2.11 |
- |
|
|
primary |
68.5 |
124.3 |
55.8 |
- |
- |
0.46 |
4.09 |
|
Met-05-08 |
supergene |
40.5 |
58.8 |
18.3 |
- |
- |
16.40 |
- |
Not all
intervals were assayed for all elements on a
sample by sample basis. Composite samples
were subsequently assayed for multiple
elements. Drill holes using PQ and HQ sized core were located in areas where it
was thought samples representative of the
various phases of the deposit could be
obtained. The holes were not necessarily
designed to cross-cut the mineralized trend
at right angles but more to obtain adequate
quantities of material to make up various
composite samples that reflected the three
major metallurgical domains that make up the
Bisha deposit. See Figure 1 for drill hole
locations.
Bill
Nielsen, P.Geo. and Nevsun’s Vice-President
of Exploration, the qualified person under
National Instrument 43-101, supervised and
directed all work associated with the
drilling program.
The Bisha
Scoping Study indicated recoveries of 87%
for the gold in the Oxide layer, 85% for
copper in the Supergene copper layer, and
concentrate recoveries of 83% copper and 85%
zinc for the Primary massive sulphides.
|
Ore |
Tonnes
m |
Au g/t |
Ag g/t |
Cu
% |
Zn
% |
Au
recovery |
Ag
recovery |
Cu
recovery |
|
Oxide |
4.1 |
7.6 |
35.8 |
0.1 |
0.1 |
87% |
45% |
|
|
Supergene Cu |
6.3 |
1.0 |
| 
