Geita Gold Project
Table 1. Details of the Geita Prospecting Licenses.
| License ID | Area (km2) |
| PLR 2806/2004 | 21.59 |
| PLR 5958/2009 | 20.85 |
| TOTAL AREA | 42.44 |
Figure 1.Location map of the Geita Prospecting License showing
the underlying geology and the Geita Gold mine.
click on to enlarge
1. Location and Access
The Geita Gold Project is located in northern Tanzania near Lake Victoria in the Geita District of the Mwanza Region (Figure 1). The project is 78km northwest from Mwanza and immediately south of the Geita Gold Mine of Anglo Ashanti Goldfields.
Access to the property, via the Geita-Biharamulo tarmac road, is good.
2. Physiography, Climate, Vegetation and Water
The topography of the property consists of low hills with intervening flat plains covered by "mbuga". The highest hill is Nyamalembo, located north east of the property. With the exception of Samena Hill, which is composed of Banded Iron Formation rocks of the Miamian system, all the other hills comprise of granite. These hills rise between 1218m and 1474m above the surrounding terrain. The area is drained by the north-westerly flowing Mtakuja stream into swampland near Nungwe Bay, Lake Victoria.
3. History of the property:
The Geita Greenstone Belt has been the most productive gold province in Tanzania with a nearly continuous history of activity from 1932 to the present. Before its closure in 1966, Geita Gold Mines Ltd constituted the largest gold operation in East Africa. It mined 5.5 million tonnes of ore at an average grade of 5.3g/t gold, sourced from five deposits including Geita, North-East Extension, Lone Cone, Prospect 30 and Ridge 8. No record of previous work undertaken, prior to the acquisition of the license by Geo Can Resources Company Limited, is currently available.
4. Regional Geology
The Geita Greenstone Belt, in which PL2806/2004 and PL5958/2009 are located, is dominated by upper Nyanzian (2.5-2.8Ga) sediments composed of intermediate to felsic volcanoclastics rocks and BIF, forming a sedimentary sequence up to 1000 meters thick. Pre-syn- and post-tectonic igneous lithologies, consisting of various compositions of diorite, felsic porphyry, quartz porphyry and lamprophyre, intrude the sedimentary sequence.
The supracrustal rocks in the Geita Greenstone Belt are tectonically juxtaposed against strongly mylonitic biotite-quartzo-feldspathic granitoid gneisses and the shear-foliated granodiorite gneisses. Internal granitoids, including amphibolite-biotite-granite, granodiorite and diorite and quartz-feldspar porphyry, are also deformed to a certain degree. Lamprophyre dykes in the Geita Greenstone domain are deformed and in place contain gold mineralization.
From the mineralisation styles seen in the Geita Gold Mine property to the north, mineralisation is hosted by Granitoids, BIF/felsic tuff sequences and within shear zones in mafic rocks.
5. Property Geology
Mapping was focused at the Samena and Nyamalembo hills, located in the northwest and northeast corners of the property respectively. On the eastern side of license, northeast lineaments have been observed within the granitic rocks close to greenstone contact. Most of the southern part of the license is dominated by granitic rocks which in part have been covered by "mbuga".
The main artisanal workings, extending over 700m in strike, are located at Nyamalembo Hill within a northwest trending shear zone along the BIF/tuff contact. At the Samena Hill, the geology consists of BIF and granitoid rocks which have been intruded by granite in the south. The granite-greenstone contact trends east-west. Minor pyrite mineralization is present.
5. Exploration Strategy
The following exploration programs have been undertaken by Geo Can since 2007:
- Geology and regolith mapping of the license
- Detailed ground magnetic survey on 50m and 100m spaced lines
- RC drilling
Two prospective exploration targets blocks, namely the Nyakanga-Nyamalembo block of 6km x 2 km and the Samena block of 4km x 2km in size have been identified.
Follow-up exploration involving gradient IP and pole-dipole surveys are to be taken across these key target areas in an attempt to delineate targets for trenching and drilling.