Overview
The Livingstonia EPL was granted to Globe Metals & Mining in March 2006, and the Company holds 100% of the project, which is 330 sqkm.
The EPL is 90 kilometres southeast from the Kayelekera Uranium Deposit, covering similar Karroo geology. It covers most of the Livingstonia Basin, a region of gently-dipping Karroo sandstones, mudstones and coal measures lying on metamorphic rocks of the Malawi Basement Complex.
Geological Summary
Previous exploration at Livingstonia has been very limited, and focused on coal. In 1950, diamond drilling by the government intersected a highly radioactive thin bed of coaly shale at 135m in DDH1. Analysis of a core chip 2.5cm long returned 0.73% U3O8 and showed a high calcium phosphate content.
Radiometric traverses of the Livingstonia Scarp nearby found fine laminae of uraniferous phosphate material on bedding planes within arkosic sandstones. Channel sampling of one radioactive outcrop in a stream gully about 900 metres northeast of DDH1 returned 0.9m at 150ppm equivalent uranium oxide for the bulk sample, with individual chip samples to 2,000m (0.20%) equivalent uranium oxide. This occurrence is about 85m stratigraphically higher in the Karoo sequence than the DD1 intercept, suggesting multiple levels of uranium concentration may be present- typical of roll-front type mineralization.
The Company's geophysical consultants reprocessed radiometric and aeromagnetic data from an airborne survey carried out under the sponsorship of the United Nations in 1985. This work identified three primary targets: Chombe, Chiweta and Bunga.
Chombe
A total of 11,000+m of drilling has been completed at Livingstonia over 2007 and 2008, with the majority of this being on the Chombe prospect.
At Chombe, the drilling has identified a broad, shallowly dipping, somewhat tabular mineralised envelope with approximate dimensions more than 1,000m (E-W) by 600m (N-S). Three zones of thicker and higher grade mineralisation, with apparent NW-SE trends, occur within this area:
Best results from Chombe are indicated in the following table:
|
Hole ID
|
Zone
|
|
Intercept (m)
|
eU3O8 (ppm)
|
|
CBRC052
|
Western
|
|
3.3
|
612
|
|
CBRC024*
|
Western
|
|
5.0
|
576*
|
|
|
|
inc.
|
3.0
|
836*
|
|
CBRC037
|
Western
|
|
2.2
|
609
|
|
CBRC021*
|
Western
|
|
15.0
|
402*
|
|
|
|
inc.
|
9.0
|
562*
|
|
CBRC039
|
Western
|
|
3.7
|
446
|
|
CBRC036
|
Western
|
|
2.3
|
362
|
|
CBRC044
|
Western
|
|
7.5
|
236
|
|
|
|
inc.
|
1.0
|
696
|
|
CBRC034
|
Eastern 1
|
|
8.1
|
644
|
|
|
|
inc.
|
3.1
|
806
|
|
CBRC047
|
Eastern 1
|
|
4.6
|
294
|
|
|
|
inc.
|
1.0
|
833
|
|
CBRC048
|
Eastern 1
|
|
11.7
|
283
|
|
|
|
inc.
|
2.2
|
677
|
|
CBPE007
|
Eastern 2
|
|
10.6
|
373
|
|
|
|
inc.
|
3.3
|
820
|
|
CBPE012
|
Western
|
|
1.7
|
630
|
|
CBPE024
|
Western
|
|
1.6
|
236
|
|
|
|
and
|
4.1
|
176
|
|
CBPE025
|
Western
|
|
6.9
|
184
|
*CBRC prefix denotes RC drill-hole; PERC prefix denotes percussion drill hole; Drill-holes CBRC021 and 024 are reported here as laboratory chemical analyses.
Geological evidence suggests that the NW-SE striking mineralised zones may represent paleochannels controlled by basement faults:
Chiweta
The drilling at Chiweta has identified a broad, shallowly dipping, somewhat tabular mineralised zone, with an apparent NW-SE strike (see below). It has been intersected by 6 drill holes over approximately 500m strike length and 200m width. The mineralised zone remains open to the NW and is terminated by the Chiweta Escarpment to the SE. The majority of the mineralised intercepts occur at vertical depths of between 40 and 70m.
