Gold
Highlights
- Tulu Kapi Phase 2 drill, resource definition, programme
underway
- Guji Phase 2 drill, resource definition, programme underway
- Dina extensive old workings discovered
Overview
Minerva Resources, through subsidiaries, holds a number of exploration
licences in Ethiopia, Sierra Leone, and the Kyrgyz Republic. The
focus of Company activity is in Ethiopia, with the licences in Sierra
Leone run by Joint Venture partners and the licences in the Kyrgyz
Republic available for sale or joint venture.
Western Ethiopian Geology
The Minerva Resource licences overlie a volcano-sedimentary sequence
which is part of the Pan-African system and has affinities with
the ophiolite suites of the Arabian-Nubian shield which host numerous
economic gold deposits. Alluvial gold is widespread throughout
the area and a number of hard rock and eluvial deposits have been
worked historically.
The most advanced of these is at Tulu Kapi, which was mined by an
Italian company in the 1930s, and later explored by the UN in the
1970s and by Tan Range Exploration in the 1990s. Following a re-interpretation
of the structural controls of mineralisation in 2006, drilling by
Minerva Resources intersected significant gold mineralisation in
four holes with a best intersection of 37.9m at 4.61 g/t gold (1.58
g/t when a top-cut of 31.1g/t gold is applied).
Reconnaissance exploration has identified a number of other target
areas where trenching and sampling has demonstrated potentially economic
gold grades and widths, notably at Guji, Dina and Keley.

Figure 4: Yubdo Exploration Licence; Geology
The Tulu Kapi Exploration Licence comprises an area of approximately
20 square kilometres centred on the old Tulu Kapi gold mine. Tulu
Kapi is 9km south of Keley, a small village on the main Gimbi to
Dembi Dolo road, 500km west of Addis Ababa. There is abundant water
in the region, and good road acces and a high power transmission
at Keley. The area is surrounded by the Yubdo Exploration Licence
Area.
Tulu Kapi, was mined by an Italian company in the 1930s, and later
explored by the UN in the 1970s and by Tan Range Exploration in
the 1990s. Following a re-interpretation of the structural controls
of mineralisation in 2006, drilling by Minerva Resources intersected
significant gold mineralisation in four holes with a best intersection
of 37.9m at 4.61 g/t gold (1.58 g/t when a top-cut
of 31.1g/t gold is applied). Mineralisation is hosted in proterozoic
syenites and associated with zones of hydrolytic hydrothermal alteration
centred on a NNE shear.
The UNDP work demonstrated anomalous gold grades continue for
1.2km along the shear structure, but Minerva Resources is focusing
on a 600m section that is oriented northwest-southeast. Seven Phase
1 drill holes have to date delineated two dominant hydrothermally
altered zones that dip to the southwest. The upper zone is over
20m thick, and the lower zone is over 10m thick. Phase 2 drilling
is designed to test the grade, and the depth and strike continuity
of these altered zones.
| Tulu Kapi Diamond Drilling, significant intersections |
| Hole Number |
From |
To |
Metres |
Au(g/t) |
| UNDP |
|
|
|
|
| UN1 |
21.1 |
21.8 |
0.7 |
27.0 |
| UN2 |
65.2 |
67.4 |
2.2 |
3.1 |
| and |
70.4 |
71.9 |
1.5 |
3.1 |
| Tan Range |
|
|
|
|
| TKDD1 |
45.0 |
51.0 |
6.0 |
1.7 |
| and |
63.0 |
65.0 |
2.0 |
3.3 |
| TKDD2 |
21.0 |
27.2 |
6.2 |
2.5 |
| TKDD3 |
12.0 |
17.0 |
5.0 |
2.6 |
| TKDD4 |
48.7 |
53.0 |
4.3 |
1.6 |
| and |
103.7 |
104.4 |
0.7 |
12.5 |
| TKDD5 |
22.0 |
23.0 |
1.0 |
7.7 |
| and |
25.4 |
37.6 |
12.2 |
1.3 |
| GPMC |
|
|
|
|
| TKBH01 |
10.3 |
20.3 |
10.0 |
2.1 |
| TKBH02 |
137.3 |
143.0 |
5.7 |
2.9 |
| and |
147.9 |
153.9 |
6.0 |
1.9 |
| TKBH04 |
46.4 |
84.3 |
37.9 |
4.6 |
| |
46.4 |
84.3 |
37.9 |
1.6 |
| and |
134.2 |
136.7 |
2.5 |
5.9 |
Guji is a greenfield evaluation target within the Yubdo Exploration
licence area discovered by the Minerva Resources geological team.
Guji is only seven kilometres west of Tulu Kapi, enabling significant
sharing of logistics and infrastructure.
Discovered through regional spur soil sampling, follow-up rock chip
sampling and soil geochemistry, Guji is hosted in a suite of proterozoic
metasediments and metavolcanics. Guji lies on a major NNE shear and
the heavily deformed rocks have permitted an extremely deep (40-50m)
weathering profile to develop.
The principal target is a 1.2km x 200m soil geochemistry anomaly
and assays from trenching and three 100m boreholes are awaited. Encouraging
alteration features in the core have prompted Minerva Resources to
plan a 3,000m Phase 2 drill programme for Q3 2007.
The following exploration properties are held 100% by Golden Prospect
Mining Company Limited (GPMC) which is registered in Ethiopia and
which is a wholly owned subsidiary of Minerva Resources plc. The
licences are approximately
| Yubdo Exploration Licence |
535.6 km2 |
| Yubdo Extension Exploration Licence |
274.0 km2 |
| Tulu Kapi and Ankore Exploration Licence |
20.1 km2 |
| Tulu Dimtu Exploration Licence |
66.2 km2 |
| Tulu Dimtu Extension Exploration Licence |
185.0 km2 |
Minerva Resources has a team of 9 Ethiopian geologists and 1 British
geologist and is building a portfolio of assets at various stages
of evaluation. Systematic reconnaissance and follow-up exploration
is carried out on the licence areas. In addition to the Guji prospect
area, the Dina, Chago and Keley targets are subject to follow-up
investigation within the Yubdo Exploration Licence area.
The Minerva Resources Exploration Licences are located in western
Ethiopia in Wellega Province, Oromiya Regional State, in Western
Ethiopia, approximately 360 kilometres west of the capital Addis
Ababa. The Yubdo Mining Licences are centred on Latitude 9° 10’ 00” South
and Longitude 35° 35’ 00” East.
Under Ethiopian Mining Law, a Prospecting Licence is valid for a
one year period after which further exploration requires an Exploration
Licence, valid for a three year period with a possible two year extension.
Small Scale Mining Licences are valid for 10 years, with a possible
additional 5 year extension. Large Scale Mining Licences are valid
for 20 years, with a possible additional 10 year extension. Royalties
for precious metals are 5%. Corporation
tax is 35% of profits.
The licence areas are situated on the western side of the Ethiopian
plateau, an undulating hilly area varying in elevation from about
1500 metres to 2000 metres, cut by a reticulate drainage system feeding
a number of larger perennial rivers such as the Birbir which is a
tributary of the Baro and the White Nile.
The climate of the area is semi-arid with total annual precipitation
ranging from 1400 to 1550 mm, falling mostly in the wet season between
May and October, when smaller roads become impassable, hampering
exploration activity. Daytime temperatures range from 25-35°C in
the dry season. Night time temperatures fall to 11–16°C during
the rainy season.
The vegetation on the flatter ground is dominated by arable crops
with occasional stands of trees, predominantly eucalyptus and acacia.
Valley bottoms are normally wooded and are used for coffee and fruit
plantations. Some of the higher and steeper ground is covered by
low scrub.
The economy of the region is based on subsistence agriculture, with
coffee as the main cash crop. There are no significant industries.
In Sierra Leone Minerva Resources retains a minority interests in
the Lake Sonfon Gold Project, operated by Golden Star Resources Inc.
The Lake Sonfon Gold Project is centred on an area of significant
artisanal production where exploration has outlined stockwork vein
mineralisation with trench intercepts with up to 7.3m @ 7.4g/t gold.
Regolith geochemistry has demonstrated more widespread untested targets
concealed by laterite.
Minerva Resources holds two licence areas in the Kyrgyz Republic.
The Aksur licence area is located 120km northeast of the city
of Osh and is valid until 31 December 2009. The Karakala licence
area is located 140km southeast of the city of Osh and is valid until
31 December 2009.
The Company has carried out extensive exploration in the licence
areas, with a focus on drill definition at Aksur, resulting in a
JORC inferred resource at the Aksur East target of 480,000 tonnes
at a grade of 6.2g/t gold, 190g/t silver and 5.4% arsenic.
The Board reluctantly concluded in September 2006 that further exploration
is likely to delineate a JORC-compliant commercial resource capable
of generating shareholder value within a reasonable time frame. The
Company is conducting a search for possible joint venture partners
or purchasers for the Kyrgyz Exploration Licences. It is anticipated
that the sale of the Kyrgyz Exploration Licences, if included, will
be effected by the sale of the entire issued share capital of Palladex
KR (a wholly owned subsidiary of Minerva Resources).
|