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Zani-Kodo Project

Full name:

Zani–Kodo Joint Venture

Mwana interest:

Mwana Africa holds 80% in the Kilo Moto Joint Venture with Office des Mines d'Or de Kilomoto (Okimo) in terms of an agreement signed in June 2005.

Resource

Zani–Kodo Gold Resource

Cut off (g/t)	Category	Tonnes (t)	Grade (g/t)	Ounces (oz)
0.5	Indicated	3,543,828	3.94	448,901
0.5	Inferred	19,745,357	2.45	1,557,265
Total		23,289,185	2.68	2,006,166

Note:The effective date for the Zani–Kodo resource statement is January 2012

Geology and history:

The Zani-Kodo project comprises four licences (including the Zani-Kodo mining licence) covering 1,605km² in the highly prospective Ituri district in the north-east of the country (Figure 1). The area is situated in the same Archaean greenstone belt that hosts the giant Kibali project (>20Moz) 60km to the NW and the Mongbwalu Project (5Moz) 30km to the SW (Figure 2).

The regional geology consists of basements gneisses and greenstone belt metasediments and minor metavolcanics. The metasedimentary sequence contains both banded and massive iron formations. Banded iron formations are the main gold host rocks. The district scale geology is shown in Figure 3.

The historical Zani-Kodo operation reached a total production of 572,000t at 6.5g/t (mining high-grade veins), but was abandoned during the civil war in 1964. Zani-Kodo's mineralised zone is 700m in length at the surface and up to 30m wide. The Main Zone consists of silicification in sheared metasediments and banded iron formation with gold associated with sulphides. At the time of abandonment the (non-compliant) sulphide reserve was reported to be 352,000t at 8.15g/t. The location of the historical pit is shown in Figure 4.

Current status and prospects:

A combination of aeromagnetic interpretation and ground mapping has identified the 9km Zani-Kodo trend which hosts the historical Kodo mine and a number of smaller artisanal sites. The position of these localities is shown in Figure 5.

To end of January 2012 a total of 317 diamond holes have been completed for 70,656m.

Kodo Main:

Drilling commenced at the site of the old Kodo mine in April 2007. To date a total of 48,200m has been drilled at this location. Mineralisation has been identified to a vertical depth of 450m (open ended).

Gold is hosted in sheared black shale/BIF units close to the contact with a competent footwall metagreywacke (Figure 6). A high grade shoot is present consisting of quartz veins and breccias (Figure 7) with pyrrhotite and arsenopyrite the dominant sulphides. This zone is up to 21m thick with a strike length of 300m.

Drilling results for Kodo Main are shown in Figures 8 and 9 with the latest assay results available.

A detailed interpretation of drilling results, surface mapping and downhole structure has allowed the definition of a robust structural model of the Kodo area. The deposit is interpreted to comprise of a basal thrust along the metasandstone-BIF contact with a series of steeper hangingwall splays. Enhanced mineralization at Kodo occurs at a major frontal ramp where the dip is significantly steeper than elsewhere. A series of late NE trending normal faults have also been identified. These have allowed the wireframes to be tightly defined in specific fault blocks. The margins of the orezone are invariably sharp with <1% difference between 0 and 0.5g/t cut offs. The mineralization wireframes at 0.5g/t cut off along with the main late normal faults are shown in Figure 10.

Resource:

The resource for Kodo Main was calculated by BMRE Ltd and is as follows:

Le Badolite

Following the definition of a >1Moz resource at Kodo drilling moved the the Badolite target 1.5km south of Kodo (Figure 11). A total of 46 holes for 9,001m were completed. The drilling accurately intersected the Zani-Kodo trend as predicted with mineralization present in sheared BIF’s and quartz veins (Figure 12). Drilling results are shown in Figure 13, with the latest assay results available.

The area is bounded to north and south by faults with a well defined orebody present (Figure 14)

Resource

The resource for Badolite was calculated by BMRE Ltd and is as follows:

Zani Central:

Exploration drilling has been completed at the Zani Central target to the south of Badolite, with the two areas separated by a NE trending fault. Artisanal workings are present at surface (Figure 15) in this area as well as two historical exploration adits.

Drilling has intersected a broad zone of mineralization in sheared banded iron formations. A cross section is shown in Figure 16 and results to date are shown in Figure 17. The latest assay results are available.

The resource for Zani Central was calculated by BMRE Ltd. And is as follows:

Exploration targets:

Target areas have been defined along a further 6km of strike length of the Zani-Kodo trend to the south of Zani Central. These were defined initially by interpretation of airborne geophysics then tested by soil sampling. Several significant anomalies with gold values >100ppb have been identified (Figure 18). Drilling will commence in these areas in 2011.

Further targets have been identified away from the main Zani-Kodo trend where high magnetic lithologies are present in prospective structural settings. These are shown in Figure 19. Soil sampling has been completed on several of these targets with significant anomalies defined, notably in the Grid 1 target (Figure 20).

Geological maps:

Figure 1: Distribution of Kibalian age greenstone belts with locations of major gold deposits. N.B: DRC and Tanzanian belts separated by younger East African rift. (PDF - 255KB)

Figure 2: District scale geology of Zani-Kodo District (PDF - 338KB)

 

 

Figure 3: District scale geology of Zani-Kodo District (PDF - 125KB)

Figure 4: Historical Kodo pit looking northwards (PDF - 119KB)

 

Figure 5: Zani-Kodo trend with location of sub areas. Background image airphoto. (PDF - 314KB)

Figure 6: Cross section through Kodo Main deposit. (PDF - 295KB)

 

 

Figure 7: Quartz rich ore zone, Kodo Main. (PDF - 132KB)

Figure 8: Drilling results, Kodo Main 2007-2008. (PDF - 2.5MB)

 

Figure 9: Drilling results Kodo Main, 2009 - June 2011. (PDF - 2.5MB)

Figure 10: Mineralised wireframes and late normal faults, Kodo Main. (PDF - 357KB)

 

 

Figure 11: Badolite area looking south from Kodo. (PDF - 96KB)

Figure 12: Drilling results, Badolite area. (PDF - 96KB)

 

 

Figure 13: Cross section through Badolite zone. (PDF - 194KB)

Figure 14: Badolite orebody wireframe (0.5g/t cut off). (PDF - 106KB)

 

 

Figure 15: Surface workings in broad zone of sheared BIFs, Zani Central, viewing SSE. (PDF - 157KB)

Figure 16: Cross section through Zani Central target. (PDF - 301KB)

 

 

Figure 17: Drilling results at end January 2012, Zani Central target. (PDF - 466KB)

Figure 18: Zani Kodo trend and location of soil anomalies and target areas along southern extension. 4000m strike length remaining to be tested. (PDF - 354KB)

 

 

Figure 19: District scale target areas identified from aeromagnetic data. (PDF - 348KB)

Figure 20: Processed aeromagnetic data, Zani–Kodo district

 

 

Figure 21: 1m resolution IKONOS satellite image (PDF - 326KB)

Assay Data

Latest assay results (XLS - 2.8MB)