Oromin Explorations Ltd.
TSX VENTURE : OLE

Oromin Explorations Ltd.

September 01, 2005 16:19 ET

Oromin Explorations Ltd.: Initial Sampling at Sabodala Returns High Grade Gold

VANCOUVER, BRITISH COLUMBIA--(CCNMatthews - Sept. 1, 2005) - Oromin Explorations Ltd. (TSX VENTURE:OLE) -

HIGHLIGHTS

- TRENCHING AT GOLOUMA RETURNS 30.22 G/T GOLD OVER 5.5 METRES AND 2.96 G/T GOLD OVER 18.5 METRES

- ARTISANAL PIT ROCK SAMPLING RETURNS UP TO 27.54 G/T GOLD

- SOIL SAMPLING RETURNS UP TO 12.00 G/T GOLD

Oromin Explorations Ltd. is pleased to report very encouraging gold results from the initial sampling program that forms part of the ongoing first phase of its USD$8 million comprehensive exploration program at the 230 square kilometre Sabodala Property in eastern Senegal.

Trench, rock and soil geochemical sampling has confirmed historical results and appears to correlate well with induced polarisation ("IP") chargeability anomalies identified by Oromin in the initial phase of its geophysical evaluation of Sabodala. In addition to showing an excellent correlation between strong gold results and the IP anomalies in areas of past and present artisanal gold mining activities, Oromin has identified numerous new gold-in-soil geochemical and IP anomalies.

Although it is still late in the rainy season at Sabodala, field crews have resumed the Phase I exploration program and have now begun mechanised trenching, the expansion of geochemical sampling coverage and ground IP geophysics, and are completing camp construction in preparation for the commencement of drilling.

Within a 200 by 250 metre area at Golouma, Oromin excavated three hand trenches near an old trench sampled in 2004 by Oromin's consulting geologist. A series of shallow hand trenches within the same area were sampled in 1987 by BRGM (Geologic Branch of the French Government). The following summarizes these results:



Trench # Sampled By Width (metres) Gold (g/t)
OLE-01 Oromin 18.5 + 2.96
including 9.5 4.50
OLE-02 Oromin 2.0 + 0.30
OLE-03 Oromin 5.5 30.22
including 2.0 68.59
Pit B Consultant 3.1 + 11.79
GOL T32 BRGM 4.0 + 3.39
GOL T33 BRGM 6.5 + 11.40
GOL T35 BRGM 5.5 + 5.40
GOL T36 BRGM 5.8 + 7.00


Trench OLE-01, which ended within mineralization, is located approximately 250 metres east of trench OLE-03. Trench OLE-02, located approximately 100 metres east of trench OLE-03, ends in mineralization as the anomalous mineralization occurs at the end of the trench exposure. An 8 metre wide section within the centre of trench OLE-02 could not be sampled as the trenching crew was unable to reach bedrock.

All of the historical trenches within the 200 by 250 metre area sampled by BRGM did not expose the full width of the mineralization. This area has not been previously drilled. Additional trenching, including mechanised excavation to accelerate the pace of trenching, will be undertaken to extend and deepen trenches OLE-01 and OLE-02 and to explore for additional on-strike extensions of the mineralised intervals.

While prospecting, mapping and sampling the Golouma grid, Oromin discovered a 100 metre by 200 metre area of extensive trenching, artisanal pitting and manual excavations located approximately 600 to 800 metres east of trenches OLE-01 to OLE-03. This area of artisanal workings, which has not been previously drilled, shows excellent correlation with the recently identified IP geophysical anomalies. A total of 37 widely-dispersed prospecting samples were collected from the various rock dumps, outcrops and trenches throughout this area, returning values ranging from below detection to 27.54 g/t gold. Eighteen of the samples returned greater than 1.0 g/t gold, of which thirteen samples were greater than 3.0 g/t gold and the following eight of which were in excess of 10.0 g/t gold: 12.83, 17.97, 18.11, 21.16, 22.12, 24.14, 24.25 and 27.54 g/t gold. Additional excavations, trenches and pits were observed beyond the area currently sampled and will be followed-up during the current field program.

Oromin has also received results for approximately 75% of the 1,300 soil geochemical samples collected prior to the onset of the rainy season. To date, less than 5% (approximately 12 square kilometres) of the 230 square kilometre Sabodala Property has been explored with ground geophysics, prospecting and soil sampling. So far, this exploration coverage includes a 2,400 by 3,000 metre area at Golouma, an 1,800 by 3,000 metre area at South Sabodala and two orientation test lines covering both the Sabodala deposit owned by Mineral Deposits Limited ("MDL") and Oromin's Masato area. The results received so far outline a series of extensive gold-in-soil geochemical anomalies that correlate well with induced polarisation chargeability anomalies identified by Oromin in the initial phase of its geophysical evaluation of the Golouma, Masato, South Sabodala and Maka Madina areas.

At Golouma, soil samples as high as 8.0 g/t gold and 12.0 g/t gold occur within a highly anomalous area covering a minimum extent of approximately 1.5 by 2 kilometres. As noted above, this area has not been previously drilled. This strong, broad series of geochemical anomaly covers and extends well beyond the area of Oromin's initial three trenches and the area of artisanal excavations. For example, a 500 metre section of grid line 26+00S at the site of Oromin's three hand trenches returned the following sequence of highly anomalous soil geochemical results at 50 metre spacing: 0.17, 1.51, 0.13, 2.13, 0.23, 1.37, 3.94, 0.10, 2.43 and 0.28 g/t gold.

Immediately along trend to the south of MDL's Sabodala South deposit that lies 300 metres from Oromin's concession boundary, a broad soil geochemical anomaly is present. This anomaly measures approximately 400 metres in width and extends to at least 1,800 metres south of the concession boundary with MDL to the Maka Madina area where historical rock sampling by BRGM returned 64 g/t gold. Oromin has identified a second, sub-parallel soil anomaly measuring approximately 300 metres in width and extending to at least 1,200 metres south of the concession boundary with MDL that has returned soil results as high as 1.6 g/t gold. As at Golouma, there is an excellent correlation between the gold-in-soil geochemical anomalies and the recently identified IP geophysical anomalies, none of which have been previously drilled. Historical drill results obtained by BRGM from the Sabodala South deposit include 3.5 g/t gold over 32.0 metres.

Oromin has also completed two orientation test lines that crossed MDL's adjacent Sabodala deposit and Oromin's Masato prospect. Results from these test lines have confirmed coincident IP geophysical anomalies with soil geochemical anomalies at both the Sabodala deposit and the Masato prospect. This geophysical and geochemical correlation will assist Oromin in its exploration of the various targets throughout its Sabodala Property. Soil results from the Masato prospect have outlined a 350 metre wide gold-in-soil geochemical anomaly that crosses both of the 200-metre spaced orientation test lines. This anomaly coincides with an IP geophysical anomaly that correlates well with a broad area of favourable looking alteration, previous trenching and limited historical drilling by BRGM that returned results of up to 12.0 g/t gold over 5.3 metres and 7.85 g/t gold over 4.1 metres.

In addition to the resumption of ground geophysics, further prospecting, trenching and geochemical sampling at the high-priority areas of the Sabodala Property explored thus far, Oromin will begin to evaluate a number of other areas on this large property.

G. McArthur P.Geo., a "qualified person" for the purposes of National Instrument 43-101 has verified the data disclosed in the news release including sampling, analytical and test data. TSL Laboratories in Saskatoon completed sample analysis. Samples were fire assayed for gold, with AA finish.

To find out more about Oromin Explorations Ltd. (TSX VENTURE:OLE), visit www.oromin.com.

On behalf of the Board of Directors of

OROMIN EXPLORATIONS LTD.

Chet Idziszek, President

No stock exchange has approved or disapproved the information contained herein.

Contact Information

  • Oromin Explorations Ltd.
    David Scott
    Investor Relations
    (604) 331-8772
    (604) 331-8773 (FAX)
    www.oromin.com