Oromin Explorations Ltd.
TSX VENTURE : OLE
OTC Bulletin Board : OLEPF

Oromin Explorations Ltd.

September 07, 2007 17:41 ET

Oromin Explorations Ltd.: Golouma West and Golouma South Gold Deposits Continue to Expand Laterally and to Depth

VANCOUVER, BRITISH COLUMBIA--(Marketwire - Sept. 7, 2007) - Oromin Explorations Ltd. (TSX VENTURE:OLE)(OTCBB:OLEPF) -

HIGHLIGHTS

- Golouma West step-out drilling intersects some of the deepest and thickest mineralization to date:

- 29 metres of 5.26 g/t gold from 283 metres in RC-113EXT

- 13 metres of 3.24 g/t gold from 199 metres and 21 metres of 6.99 g/t gold from 214 metres in RC-141

- Golouma South step-out drilling intersects some of the deepest mineralization to date:

- 14 metres of 7.06 g/t gold from 157 metres in RC-127

- 10 metres of 2.33 g/t gold from 185 metres in RC-06EXT

- Initial trenching at Korolo returns 3.22 g/t gold over 13 metres, and follow-up trenching at Maleko encounters multiple zones including 5.80 g/t gold over 3 metres and 6.21 g/t gold over 5 metres.

Oromin Explorations Ltd. ("Oromin") is pleased to provide additional results from the westernmost step-out and in-fill drilling at the Golouma West, Golouma South and Masato Gold Deposits. Results from additional trenching at the Dendifa and Maleko Discoveries, and initial trench results from the Korolo Discovery are also presented.

Oromin's 2007 exploration program is focused on resource delineation of Sabodala's numerous gold zones and deposits with more than 75,000 metres in 450 holes planned. The results from its ongoing property-wide exploration program continue to support Oromin's model of multiple gold deposits being located within the Sabodala Property. Please refer to the attached map and Oromin's previous news releases for additional information.

GOLOUMA WEST GOLD DEPOSIT

The Golouma West Gold Deposit has been traced over 1,000 metres on surface and to 300 metres at depth and remains open in all directions. Oromin is drilling this deposit on 40-metre centres using both RC and diamond core rigs. The majority of recent drilling has focused on the westernmost portion of the deposit where the E-W trending Golouma West mineralization has merged with the NE-SW trending Golouma Northwest mineralization. Trenching and step-out drilling indicates that both the E-W trending Golouma West and NE-SW trending Golouma Northwest mineralization trends continue to the west and north beyond the areas for which results are available.

Newly drilled mineralized intersections are listed in the attached schedule; the most significant of which are:

- 29 metres of 5.26 g/t gold from 283 metres in RC-113EXTENSION(i)

- 8 metres of 5.65 g/t gold from 69 metres in RC-122

- 13 metres of 3.86 g/t gold from 104 metres in RC-125

- 13 metres of 3.24 g/t gold from 199 metres and 21 metres of 6.99 g/t gold from 214 metres in RC-141

- 12 metres of 2.98 g/t gold from 216 metres in RC-144(ii)

(i) Hole RC-113EXT represents the deepest mineralized intersection to date at Golouma West.

(ii) Hole RC-144 is located on the westernmost section drilled to date at Golouma West.

GOLOUMA SOUTH GOLD DEPOSIT

The Golouma South Gold Deposit has now been traced over 650 metres on surface and to 160 metres depth and remains open in all directions. A recent excavator trench, TRX-178, located 125 metres northeast of the northernmost drilling on the deposit, intersected 2.89 g/t gold over 6 metres which may represent a northward extension of the Golouma South mineralization. Additional trenching is presently underway at this location.

Drilling, at 40-metre centres, is continuing at the Golouma South Deposit using both RC and diamond core rigs. Newly drilled mineralized intersections are listed in the attached schedule, the most significant of which are:

- 6 metres of 4.82 g/t gold from 107 metres in RC-03EXT

- 10 metres of 2.33 g/t gold from 185 metres in RC-06EXT

- 14 metres of 7.06 g/t gold from 157 metres in RC-127

- 5 metres of 6.91 g/t gold from 74 metres in RC-130

- 4 metres of 9.55 g/t gold from 18 metres in RC-133

- 12 metres of 4.84 g/t gold from 9 metres in RC-134

- 5 metres of 5.00 g/t gold from 123 metres in RC-140

MASATO GOLD DEPOSIT

The Masato Gold Deposit (which includes Masato North) is coincident with a large and strong gold-in-soil geochemical anomaly 2.6 kilometres in length by up to 1.2 kilometres in width and is located 1.2 kilometres due east of the 1.9 million ounce Sabodala Gold deposit owned by Mineral Deposits Ltd. ("MDL") that is being readied for production (see MDL August 16, 2007 news release). This large geochemical anomaly is also coincident with 3 parallel I.P. chargeability anomalies of which only the westernmost has been drilled to date.

Preliminary widely-spaced drilling to date, which has only partially tested a 1.4-kilometre strike extent of Masato, has returned previously released drill results of 15.11 g/t gold over 12 metres from DH-39, 2.44 g/t gold over 22 metres in DH-95 and 2.90 g/t gold over 14 metres in DH-112.

Newly drilled mineralized intersections are listed in the attached schedule; the most significant of which are:

- 3 metres of 14.32 g/t gold from 131 metres in DH-125

- 2 metres of 14.26 g/t gold from 148 metres in DH-126

- 7 metres of 3.32 g/t gold from 58 metres in DH-128

REGIONAL EXPLORATION

In addition to the extensive reverse circulation and core drilling programs, regional exploration continues at various geochemical and structural target areas throughout the Sabodala Property. Recent highlights include:

- Initial trenching at the Korolo target returned 3.22 g/t gold over 13 metres and 5.17 g/t gold over 3 metres in Trh-66 as well as 2.59 g/t gold over 5 metres in TRX-210.

- Follow-up trenching at the Maleko target, where initial trenching returned 4.41 g/t gold over 3 metres and 1.16 g/t gold over 7 metres in TRX-158, has encountered additional multiple zones of 5.80 g/t gold over 3 metres and 6.21 g/t gold over 5 metres in TRX-209.

- Initial trenching at the Dendifa target returned 1.59 g/t gold over 5 metres in TRX-200.

These three discovery areas, as well as Kinemba West, Sekoto, Maki Medina and Niakafiri are now ready for drilling.

Fieldwork was carried out under the supervision of Gerald McArthur, P. Geo., a "qualified person" for the purposes of National Instrument 43-101, who has also verified the data disclosed in this news release. TSL Laboratories in Saskatoon, Saskatchewan carried out all assaying under industry-standard QA/QC procedures.

To find out more about Oromin Explorations Ltd. visit www.oromin.com.

On behalf of the Board of Directors of OROMIN EXPLORATIONS LTD.

Chet Idziszek, President

SCHEDULE



--------------------------------------------------------------------------
Oromin Explorations Ltd.
Golouma West Gold Deposit
Mineralization Intersections
--------------------------------------------------------------------------
Grid Azimuth/ From - To Interval Gold
Drill Hole Section Co-ordinate Dip (m) (m) (g/t)
--------------------------------------------------------------------------
RC-121 720W 3693N/4360E 015/-60 172-178 6 1.13
--------------------------------------------------------------------------
RC-122 640W 3664N/4430E 195/-55 69-77 8 5.65
Incl.73-76 3 11.48
--------------------------------------------------------------------------
RC-123 680W 3705N/4403E 015/-60 118-122 4 2.64
--------------------------------------------------------------------------
RC-124 720W 3544N/4315E 015/-60 165-169 4 1.66
--------------------------------------------------------------------------
RC-125 680W 3740N/4413E 015/-60 104-117 13 3.86
--------------------------------------------------------------------------
RC-141 720W 3538N/4318E 015/-60 199-212 13 3.24
214-235 21 6.99
Incl.227-233 6 19.35
Incl.232-233 1 80.73
239-240 1 20.03
242-252 10 1.27
--------------------------------------------------------------------------
RC-142 760W 3665N/4305E 015/-60 212-217 5 1.46
268-271 3 1.29
--------------------------------------------------------------------------
RC-143 760W 3625N/4295E 015/-60 227-232 5 3.73
--------------------------------------------------------------------------
RC-144 760W 3585N/4285E 015/-60 216-228 12 2.98
Incl.218-223 5 4.92
--------------------------------------------------------------------------
DH-RC75EXT 360W 3410N/4660E 015/-60 234-237 3 1.22
--------------------------------------------------------------------------
DH-RC83EXT 480W 3505N/4560E 015/-60 213-219 6 2.53
236-240 4 5.80
Incl.238-239 1 15.23
247-248 1 16.43
--------------------------------------------------------------------------
DH-RC113EXT 720W 3500N/4300E 015/-60 276-278 2 2.06
283-312 29 5.26
Incl.292-295 3 25.19
and 303-305 2 9.38
--------------------------------------------------------------------------

Mineralized intervals are based on 1-metre composite samples utilizing a
0.5 g/t gold cut-off level with a maximum internal dilution of 2 metres.
The attitude of mineralized intervals varies and reported mineralized
intersections may not represent true widths.


--------------------------------------------------------------------------
Oromin Explorations Ltd.
Golouma South Gold Deposit
Mineralization Intersections
--------------------------------------------------------------------------
Grid Azimuth/ From - To Interval Gold
Drill Hole Section Co-ordinate Dip (m) (m) (g/t)
--------------------------------------------------------------------------
RC-126 095S 3063N/5040E 110/-60 21-23 2 1.68
128-135 7 2.32
156-160 4 7.69
--------------------------------------------------------------------------
RC-127 125S 3034N/5030E 110/-60 86-87 1 9.40
148-153 5 1.48
157-171 14 7.06
Incl.157-163 6 14.32
Incl.157-158 1 30.18
181-182 1 3.57
--------------------------------------------------------------------------
RC-128 160S 3013N/5005E 110/-60 191-193 2 1.41
--------------------------------------------------------------------------
RC-129 200S 2965N/5020E 110/-60 140-147 7 2.04
Incl.144-146 2 5.73
--------------------------------------------------------------------------
RC-130 200S 2945N/5070E 110/-60 69-72 3 2.46
74-79 5 6.91
Incl.77-78 1 30.01
99-102 3 3.67
--------------------------------------------------------------------------
RC-131 240S 2910N/5040E 110/-60 101-105 4 5.06
--------------------------------------------------------------------------
RC-133 060N 3180N/5192E 110/-55 18-22 4 9.55
--------------------------------------------------------------------------
RC-134 040N 3165N/5182E 110/-60 9-21 12 4.84
Incl.16-20 4 10.41
--------------------------------------------------------------------------
RC-137 075S 3055N/5130E 110/-60 78-84 6 4.79
Incl.78-80 2 10.19
95-102 7 1.28
--------------------------------------------------------------------------
RC-138 075S 3070N/5093E 110/-60 123-124 1 4.12
129-132 3 1.93
144-145 1 4.39
--------------------------------------------------------------------------
RC-139 000S 3130N/5145E 110/-60 88-94 6 2.59
Incl.89-90 1 9.81
--------------------------------------------------------------------------
RC-140 000S 3145N/5105E 110/-60 123-128 5 5.00
Incl.126-127 1 12.24
--------------------------------------------------------------------------
DH-RC03EXT 020S 3111N/5126E 110/-60 107-113 6 4.82
Incl.107-111 4 7.01
--------------------------------------------------------------------------
DH-RC04EXT 020S 3126N/5088E 110/-60 134-138 4 3.41
--------------------------------------------------------------------------
DH-RC06EXT 050S 3089N/5105E 110/-60 165-167 2 2.75
185-195 10 2.33
Incl.185-188 3 4.93
--------------------------------------------------------------------------

Mineralized intervals are based on 1-metre composite samples utilizing a
0.5 g/t gold cut-off level with a maximum internal dilution of 2 metres.
The attitude of mineralized intervals varies and reported mineralized
intersections may not represent true widths.


--------------------------------------------------------------------------
Oromin Explorations Ltd.
Masato Gold Deposit
Mineralization Intersections
--------------------------------------------------------------------------
Grid Azimuth/ From - To Interval Gold
Drill Hole Section Co-ordinate Dip (m) (m) (g/t)
--------------------------------------------------------------------------
DH-123 340S 9135N/4486E 110/-45 54-59 5 1.65
194-195 1 3.09
--------------------------------------------------------------------------
DH-125 340S 9135N/4486E 110/-65 65-74 9 1.56
131-134 3 14.32
Incl.132-133 1 40.74
235-239 4 1.10
246-249 3 1.79
--------------------------------------------------------------------------
DH-126 340S 9152N/4462E 110/-65 116-119 3 2.31
124-126 2 1.66
148-150 2 14.26
Incl.148-149 1 27.91
--------------------------------------------------------------------------
DH-127 340S 9152N/4462E 110/-80 111-114 3 1.09
139-146 7 1.89
Incl.142-144 2 4.79
193-204 11 1.80
--------------------------------------------------------------------------
DH128 260N 9734N/4617E 110/-45 58-65 7 3.32
--------------------------------------------------------------------------
DH-128A 260N 9735N/4615E 110/-50 62-65 3 3.06
67-73 6 1.42
--------------------------------------------------------------------------
DH-130 260N 9735N/4615E 110/-65 68-75 7 1.44
--------------------------------------------------------------------------

Mineralized intervals are based on 1-metre composite samples utilizing a
0.5 g/t gold cut-off level with a maximum internal dilution of 2 metres.
The attitude of mineralized intervals varies and reported mineralized
intersections may not represent true widths.


To view accompanying map click on the following link: http://www.ccnmatthews.com/docs/MapOLE_907.jpg

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

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