Projects | Included Licenses | Summary & Overview | Tanzanian Royalty Exploration Interest | Geology | Reconnaissance Sampling | Geophysics | Drilling Results | Future Activity

Mbogwe Property

• The majority (approximately 80%) of the project area is underlain by granite, with a minor indication or presence of greenstone. However, there are two areas, one on the northeastern corner of one PL and the other on the northwestern corner of another PL which define a geophysical domain distinct and different from the normal G4 granitoid (young, post-tectonic intrusive) domains to the N and S, which may suggest an underlying greenstone lithology. The "G" notation for defining different granite types was used by David J Kerr, a consulting geologist for Tanzam 2000, whereby a G3 granite referred to the oldest known granite (Early Archaean and therefore Pre-Nyanzian). Whereas the G4 granite is a relatively young (Mesoproterozoic), peraluminous granite, which is post-tectonic. Kerr also describes a G1 and G2 granite, which represent an early orogenic (micaceous) and orogenic domes, respectively.
• Airborne geophysical assessment has identified N-S, NNE, E-W to NW trending magnetic lineaments.
• A favorable structural setting, which includes excellent N-S and NW trending structures known to be strongly associated with gold mineralization, in addition to indications of additional greenstone occurrences, lends this project area to further exploration.

The Mbogwe Project Area is located in the central granitoid "dome" of the Sukumaland Greenstone Terrain located in the southern Lake Victoria region. Not much is known about the regional geology apart from what is observed on the Barth Map and the numerous lineaments taken from the LandSat and regional magnetics.</html>


Principal Structures

The prominent structures are the N-S to NNE, E-W to NW trending magnetic lineaments.

Geophysical (radiometric, magnetic and LandSat imagery) data have indicated 2 mafic dykes, one to the west of the two licenses, with a N-S to NNE trend, and a second striking diagonally across the two licenses, along a NE trend. Other prominent structural features are manifested by N-S, NNE to NE, NNW to NW trending magnetic lineaments, which have been interpreted as shear zones or faults. The mapped prominent structural trend in the granites is 320o, which is well defined by lines of pegmatite.

The most prominent structural features are manifested by NW to NNW, NE to NNE and N-S trending magnetic lineaments.

Geology of the Prospecting Areas

The bedrock geology is concealed under grey to orange-greyish brown sandy soils and laterite. The entire area boasts no outcrop, but the interpretation of geophysical (radiometric, magnetics, landSat imagery) data suggests that this area may be underlain by a combination of older granites and supracrustal rocks.

There is abundant granite outcrop in this area, which stand out as kopjes, rolling hills and, in places, extended ridges within a generally flat terrain.

The bedrock geology of the western half of the license is concealed under orange-brown to grey residual soils, whilst most of the eastern half boasts granite outcrop. Geophysical (KUTh ternary imagery) data suggests that over 90% of the license is underlain by granites, with the extreme southern margin being underlain by greenstone lithology.

The bedrock geology of the northern two thirds of the license is concealed under grey to orange-brown soils and laterite. There are abundant granite outcrops towards the S.

Reconnaissance Sampling

A single 3m pit was excavated within a laterite duricrust, which revealed no significant gold values.

Some 39 regolith samples were collected from 8 different pits, with the highest gold assay reporting 0.05g/t. A single biotite granite outcrop mapped to the southwestern corner of one PL contained fresh sulphides (pyrite) within xenoliths. Once again, gold values are very low.

Old artisinal workings were observed to the north of the license, which follow a sheared quartz vein (approximately 30-50m thick and some hundreds of meters along strike 335°). Channel samples were collected from a trench dug across the quartz vein (060o), in addition to some 5 regolith samples collected from old artisinal workings. Despite fresh sulphides (mainly pyrite) being visible along the unweathered surfaces of the quartz vein, no significant gold values were recorded.

Geophysics


Geodass flew an aeromagnetic and radiometric survey in 1999. This forms part of a larger survey which is at present not for public domain.

Drilling Results


No drilling has been carried out on the project area to date.