Oromin Explorations Ltd.

Oromin Explorations Ltd.

April 05, 2006 17:54 ET

Oromin Explorations Ltd.: Depth Extent and Continuity of Surface Results Confirmed by Initial Drilling at Sabodala

VANCOUVER, BRITISH COLUMBIA--(CCNMatthews - April 5, 2006) - Oromin Explorations Ltd. (TSX VENTURE:OLE) -






Oromin Explorations Ltd. is pleased to report the results from its initial drilling on its Sabodala Property in eastern Senegal. Oromin has now completed ten drill holes at the five target areas selected for the initial drilling evaluation and has results for five drill holes completed at four of these target areas (please see attached map for drill hole locations). Drilling is ongoing and will be accelerated in light of these initial results.

The target areas evaluated in these first ten holes are the Niakifiri South area, the Masato area and three zones within the broad Golouma gold geochemical anomaly. Results are pending for the Masato area and one of the two drill holes at Niakafiri. The assay results listed below confirm the continuity at depth of gold mineralization encountered by Oromin in surface trenching and, along with the extensive geochemical anomalies discussed in Oromin's previous news releases, confirm the significant potential of the mineralised zones.

Golouma Area

Golouma West
Hole (DH)
or Grid From - Interval Gold
Trench (TR) Co-ordinates Azimuth To (m) (m) (g/t)
DH-01 3616N/4569E 010 degrees 18.0 - 29.0 11.0 2.77
23.0 - 26.0 3.0 4.71
41.0 - 43.0 2.0 3.03
DH-02 3590N/4576E 010 degrees 21.0 - 24.0 3.0 9.43
41.0 - 43.0 2.0 2.49
TR-OLE-1 3612N/4690E 160 degrees 15.0 - 33.5 18.5+ 2.96
TR-OLE-3 3617N/4470E 355 degrees 8.0 - 13.5 5.5 30.22
TRX-2 3636N/4673E 180 degrees 39.0 - 59.0 20.0 1.73
TRX-3 3652N/4615E 170 degrees 16.0 - 18.0 2.0 6.04
TRX-4 3670N/4566E 185 degrees 19.0 - 35.0 16.0 7.08

Golouma South
Hole (DH)
or Grid From - Interval Gold
Trench (TR) Co-ordinates Azimuth To (m) (m) (g/t)
DH-03 3016N/5161E 010 degrees 0 - 30.0 30.0 2.42
11.0 - 26.0 15.0 4.55
15.0 - 19.0 4.0 14.02
TRX-18 3012N/5144E 110 degrees 12.0 - 37.0 25.0 12.35
TRX-20 3085N/5192E 130 degrees 8.0 - 15.0 7.0 1.19

Northwest Grid From - Interval Gold
Trench (TR) Co-ordinates Azimuth To (m) (m) (g/t)
TR-OLE-30 3787N/4467E 090 degrees 1.0 - 32.0 31.0 1.93
1.0 - 17.0 16.0 3.52

All drill holes (including DH-05 at Niakafiri South) are inclined at -45 degrees. Assay intervals are based on one metre sample composites and 0.5 g/t gold cut-off. The attitude of mineralized intervals vary and may not represent true widths.

In addition to Oromin's new drilling discoveries at Golouma West and Golouma South, trenching results at the Golouma Northwest area have provided another exploration drill target for immediate testing.

The Golouma gold geochemical anomaly presently measures 1.5 by 3.0 kilometres in extent and is open to expansion to the south and west. Soil geochemistry, IP geophysics, trenching and now drilling suggest that the Golouma area hosts multiple zones of gold mineralization.

Drill hole DH-04, drilled to test an IP geophysical anomaly on the eastern edge of the Golouma geochemical anomaly did not return any significant results. It is likely that the geophysical feature here is related to a formational sulphide anomaly rather than the presence of gold mineralization.

Niakafiri South Area

Hole (DH)
or Grid From - Interval Gold
Trench (TR) Co-ordinates Azimuth To (m) (m) (g/t)
DH-05 5820N/3203E 120 degrees 65.0 - 72.0 7.0 1.15
87.0 - 95.0 8.0 2.29
91.0 - 94.0 3.0 5.00
TRX-22 5835N/3273E 305 degrees 28.0 - 43.0 15.0 1.28
TRX-23 6140N/3292E 095 degrees 98.0 - 112.0 14.0 1.06
TRX-29 5790N/3158E 120 degrees 55.0 - 65.0 10.0 1.73
TRX-33 5494N/3199E 275 degrees 5.0 - 16.0 11.0 1.82

Oromin's coincident geochemical-geophysical Niakafiri South target has been traced for more than two kilometres south from the Oromin/Mineral Deposits Limited ("MDL") concession boundary and remains open to the south and west. Trenching has been completed over only 700 metres of this two kilometre extent. The trench results include 1.06 g/t gold over 14.0 metres, 1.28 g/t gold over 15.0 metres, 1.73 g/t gold over 10.0 metres and 1.82 g/t gold over 11.0 metres. Oromin's trench results are similar to the initial results reported in 1987 by BRGM (Geologic Branch of the French Government) at the Niakafiri deposit on MDL's adjacent concession. The Niakafiri South mineralised zone is believed to be the immediate southern extension of MDL's Niakafiri deposit.

The southern most drilling completed by MDL on its Niakafiri deposit is approximately 200 metres north of the Oromin/MDL concession boundary. Oromin's drill hole, DH-05 was collared 400 metres south of the common boundary, or 600 metres south of MDL's current drilling at the Niakifiri deposit and intersected similar style and grade of mineralization as many of the MDL drill holes at the adjacent Niakafiri deposit. MDL has reported that it has outlined an initial indicated resource of oxide gold of 1.86 million tonnes and an initial inferred resource of oxide gold of 3.78 million tonnes both grading 1.7 g/t gold (both using a 1.0 g/t gold cut-off) within the presently drilled area of its Niakafiri deposit. A second hole, DH-06, was also drilled by Oromin at Niakafiri South and assays are pending for this hole.

Masato Area

Assay results are pending for the four drill holes completed by Oromin at the Masato area. Previous work by BRGM had outlined a minimum 1,500-metre long geochemical anomaly within which it completed eleven drill holes along a 700-metre extent. Seven of these holes that successfully intersected mineralization returned a weighted average of 2.8 g/t gold over a 15.9 metre length. BRGM drill intercepts ranged up to 4.2 g/t gold over 26.7 metres.

The grade and style of mineralization at Masato is similar to that at MDL's Sabodala deposit, located 1.2 kilometres to the west. MDL recently announced that it has outlined an initial measured and indicated resource of 8.22 million tonnes grading 2.9 g/t gold and an initial inferred resource of 4.36 million tonnes grading 2.5 g/t gold (both using a 1.0 g/t gold cut-off) within at the Sabodala deposit. MDL has reported that it intends to begin production from its Sabodala and Niakafiri deposits in 2007 and to that end has recently completed a AUD$150 million financing to fund development of the deposits. For more information on MDL's activities at Sabodala, please refer to MDL's website at www.mineraldeposits.com.au.

New Targets

To date, Oromin's property-wide reconnaissance and detailed follow-up exploration has identified at least 17 new exploration targets within its 230 square kilometre Sabodala exploration concession. The rate at which these numerous early-stage exploration discoveries throughout the concession were made further shows the relatively unexplored nature of this prolific structural environment. Ongoing programs of detailed mapping, sampling, geophysics and trenching will assist Oromin in prioritising the drilling evaluation for these new targets.

The attached map shows the location of these new targets in relation to previously identified targets at Golouma, Niakafiri South and Masato.

To view the attached map, please click on the following link: http://www.ccnmatthews.com/docs/oromin.jpg.

Douglas Turnbull P. Geo., a "qualified person" for the purposes of National Instrument 43-101, has verified the data disclosed in this news release. All fieldwork was carried out under the supervision of Gerald McArthur P. Geo., also a "qualified person" for the purposes of National Instrument 43-101. TSL Laboratories in Saskatoon, Saskatchewan carried out all assaying.

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

On behalf of the Board of Directors of


Chet Idziszek, President

The TSX Venture Exchange has not reviewed and does not accept responsibility for the adequacy and accuracy of this release

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