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African Metals Corp
Symbol AFR
Shares Issued 79,308,537
Close 2010-08-20 C$ 0.24
Market Cap C$ 19,034,049
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African Metals drills 48 m of 2.80% Cu at Luisha South

2010-08-23 14:27 ET - News Release

Mr. Nigel Ferguson reports

BROAD COPPER AND COBALT MINERALISATION INTERCEPTED IN DRILLING AT THE LUISHA SOUTH PROJECT

African Metals Corp. has received final assay results from seven of the 21 holes completed during the June, 2010, reverse-circulation (RC) percussion drilling program conducted on its Luisha South project in the Katanga province of the Democratic Republic of Congo.

Highlights

  • Sixteen metres at 2.20 per cent copper and 0.70 per cent cobalt from one metre (LURC015);
  • Twenty-one metres at 2.30 per cent Cu and 0.40 per cent Co from two m (LURC017) ending in mineralization;
  • Forty-eight metres at 2.80 per cent Cu and 0.50 per cent Co from two m (LURC018) ending in mineralization, including nine metres at 5.20 per cent Cu and 1.10 per cent Co from 41 m;
  • Forty-one metres at 1.5 per cent Cu and 0.5 per cent Co from one m (LURC020).

Reverse-circulation drill assay results

Titan Drilling SPRL completed a 2,002-metre drilling program at the Luisha South project in June, 2010. Nineteen angled and two vertical holes were drilled in the vicinity of the historical Luisha South pit. Fifteen holes were collared to the northwest, west and south of the pit, whilst six holes were collared in the pit floor.

Drilling tested the potential for mineralization both downdip and along strike from the current excavated open pit and also tested significant high-grade copper and cobalt assay results returned from trench and adit sampling completed earlier in March of this year and reported in Stockwatch on June 15, 2010.

Drill samples were collected from all holes at one-metre intervals and riffle-split to produce approximately one-kilogram subsamples for analysis. A total of 1,462 samples including quality controls were dispatched to SGS Minerals laboratory in Kalulushi, Zambia, for sample processing and analysis.

Final results from seven of the 21 drill holes have been received including drill holes LURC014A and LURC015 to LURC020 inclusive.

Drill holes LURC015 to LURC020 were collared in the base of the pit testing the transition and sulphide zones, downdip of the March, 2010, trench and adit sampling results. Widths encountered in the mineralized intercepts are comparable with those defined in trench intercepts suggestive of a tabular and consistent continuation to mineralization.

Technical staff are confident that the extensive oxide mineralization reported in the surface trench results will continue downdip within the footwall contact zone for an additional 10 to 30 metres below the current pit base. Drill intercepts within the transition and sulphide zones contain significant copper and cobalt mineralization warranting further detailed drilling and completion of diamond tails on several of the holes where ground conditions terminated progress.

LURC014A was collared on the surface on the northwest edge of the pit testing for a transverse fault offset to mineralization. Groundwater issues forced the early abandonment of two of the seven drill holes reported, namely LURC017 and LURC018. Both of these holes terminated in significant copper and cobalt mineralization and will be further tested with a diamond core tail.

Geological logging and interpretation of the drill chips suggest that the mineralization is hosted by siltstone, dolomitic siltstone and carbonaceous siltstone of the Roan formation. More specifically, it is hosted within the Grey RAT, RSF, RSC and BOMZ stratigraphic horizons of the R2. The interpretation is significant as these units host the upper and lower ore horizons in other nearby mines along the line of lode such as the Kipoi Central copper deposit as defined by Tiger Resources Ltd.

Site visit completed by independent geological consultant

An independent resource consultant visited the project between Aug. 15 and 17 as part of the diligence requirements for resource estimation for the Luisha South project. Initial interpretations by AFR technical staff have been made, and the resource estimation is expected to be finalized and released in either late August or early September, dependent on the receipt of the outstanding assay results.

Soil sampling of southeast strike extensions

A regional first-phase soil sampling program has been completed on the southeastern extension to the Luisha South pit mineralization. Samples were collected at 50-metre spacing on lines 200 metres apart to produce a total of 353 samples. All samples will be analyzed by the Niton Analyzer with all anomalous samples being dispatched to ALS Laboratories in South Africa.

Nigel Ferguson, AusIMM, president and chief executive officer of the company and a qualified person under National Instrument 43-101, has verified data disclosed in this release.

Drill hole sampling and assaying procedure

The company undertakes drilling and sampling to strict guidelines. The 5.5-inch RC percussion samples were collected from the cyclone at one-metre intervals. Individual bags were weighed to determine sample recovery and weights recorded on the appropriate drill logs. The one-metre cyclone sample was run through a 50-50 riffle splitter twice to homogenize and was subsequently further split to produce two subsamples each of approximately one-kilogram sample weight. One subsample was bagged, labelled and stored as reference sample for future use with the other subsample being combined with the subsample from the subsequent one-metre sample interval to produce a two-metre sample composite. Holes collared around the surface of the pit had the two-metre composite samples submitted for analysis. Holes collared in the pit floor had the one-metre reference samples submitted for analysis. Quality control measures included collection of field duplicates and submission of standards with the samples.

Samples were delivered under security by road transport to SGS Minerals Laboratory in Kalulushi, Zambia, for sample preparation and analysis. The laboratory maintains quality assurance protocols in line with ISO 17025 and maintains quality accreditation for commercial laboratories in line with ISO 9002. The laboratory also participates in international round-robin programs organized by LQSI of the United States.

The sample preparation scheme was PRP90; drying for four hours at 105 C; crushing to two millimetres with 90 per cent passing two mm; and pulverizing of a 1,000-gram subsplit of the two-millimetre chips to 85 per cent passing 75 microns. Digest was scheme DIG42S; 0.4 gram of pulverized material digested in a four-acid mixture on a hot plate at 200 C for 45 minutes, with subsequent dilution back to 100 millilitres before AAS analysis by method AAS42S. Results for copper, cobalt and manganese were reported in percentages. Lower detection limits were 0.01 per cent for all three elements.

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