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Message: Resource Update

Resource Update

posted on Oct 08, 2009 10:01PM
October 07, 2009
Exploration Continues To Provide Encouraging Results From Various Sabodala Property Deposits And Prospects
HIGHLIGHTS

  • TRENCH RESULTS FROM KOBOKOTO ALPHA INCLUDE:
    • 483.7 g/t gold over 6 metres
  • DRILLING AT THE EPSILON DEPOSIT CONTINUES TO INTERSECT HIGHER GRADE MINERALIZATION INCLUDING:
    • 196.3 g/t gold over 4 metres near surface in DH-522
    • 27.8 g/t gold over 3 metres near surface in DH-520
    • 58.1 g/t gold over 1 metres in DH-524
  • SUCCESSFUL DEEP DRILLING AT THE GOLOUMA WEST DEPOSIT INCLUDES:
    • 17.54 g/t gold over 10 metres in DH-539
  • SUCCESSFUL DEEP DRILLING AT THE GOLOUMA SOUTH DEPOSIT INCLUDES:
    • 8.26 g/t gold over 11 metres in DH-519
  • NEW DISCOVERY AT KOTOUNIOKOLLA WITH ROCK SAMPLE RESULTS UP TO 269.4 G/T GOLD
Oromin Explorations Ltd. ("Oromin"), on behalf of the Oromin Joint Venture Group ("OJVG"), is pleased to provide an exploration update for the ongoing exploration program at its Sabodala Gold Project in eastern Senegal, West Africa.

Oromin is also pleased to report that Ken Kuchling, P.Eng., has been appointed as Oromin's Vice-President of Engineering. Mr. Kuchling is a Professional Mining Engineer with 28 years experience in the operations and consulting industries with numerous commodities including gold, diamonds, potash, copper and molybdenum. Mr. Kuchling has a well-rounded engineering background, consisting of direct involvement in pre-feasibility and feasibility studies, international due diligence reviews, project permitting, mine geology, geotechnical engineering, tailings engineering, mine design and equipment selection. He holds a Bachelor's degree in mining engineering from McGill University, a Master's degree in mining engineering from the University of British Columbia and is a Registered Professional Engineer in Canada. Mr. Kuchling will oversee the optimization work currently underway as Oromin continues its development of Sabodala.

Recent exploration activities include in-fill and step-out resource drilling at the Epsilon deposit, step-out resource drilling towards delineating underground potential at both Golouma West and Golouma South deposits, trenching at Kobokoto, soil geochemical sampling at various target areas and prospecting at Maki Medina, and the newest discovery at Kotouniokolla.

EPSILON DEPOSIT

Drilling is continuing at the Epsilon deposit where multiple NE and NW trending quartz vein systems have been intersected in trenching and drilling within a surface area of approximately 400 metres by 400 metres. Drilling to date has intersected the main Epsilon vein systems over a minimum strike extent of 180 metres and consistently to depths of 150-200 metres below surface in multiple zones. The Epsilon vein systems remain open along strike and to depth.

Significant results from recent drilling at Epsilon are summarized in the following table:

Drill Hole Grid
Co-ordinate
Azimuth/
Dip
From - To
(m)
Interval
(m)
Gold
(g/t)
DH-520 53553N/5410E 030/-45 48-51
incl.49-50
3
1
27.79
67.64
DH-522 53553N/5410E 030/-60 52-56
incl.55-56
124-129
incl.127-129
4
1
5
2
196.27
763.10
3.92
7.56
DH-524 53553N/5410E 030/-75 161-162
170-171
1
1
58.02
3.14
DH-527 53585N/5350N 030/-45 7-8 1 16.74
DH-529 53585N/5350N 030/-60 3-5 2 2.65

Mineralized intervals are based on 1-metre samples utilizing a 1.0 g/t gold cut-off level with a maximum internal dilution of 1 metre. No cutting of gold assays has been employed for reported intervals. The attitude of mineralized intervals varies and reported mineralized intersections may not represent true widths.

A complete table of significant Epsilon drill results is attached in Schedule A.

GOLOUMA WEST AND GOLOUMA SOUTH DEPOSITS

Oromin has recently completed a series of deep drill holes at both the Golouma West and Golouma South deposits targeting higher grade mineralization down-dip from previously defined resources. These drill holes expand the mineralization beyond the current resource outlines and enhance the underground mining potential at both of these gold deposits. Significant results available from this recent deep drilling program are summarized in the following table:

Drill Hole Location Grid
Co-ordinate
Azimuth/
Dip
From - To
(m)
Interval
(m)
Gold
(g/t)
DH-516 Golouma South 53116N/5033E 110/-75 207-210
215-218
3
3
4.09
3.53
DH-517 Golouma West 53355N/4658E 015/-70 265-266
275-279
incl.276-277
1
4
1
9.55
6.27
18.59
DH-518 Golouma South 53139N/5051E 110/-67 177-184
191-197
incl.192-193
incl.195-196
7
6
1
1
2.19
3.02
7.89
5.92
DH-519 Golouma South 53163N/4959E 110/-60 262-273
incl.265-272
incl.271-272
11
7
1
8.26
12.24
44.86
DH-521 Golouma West 53356N/4658E 015/-75 298-309
incl.305-309
314-318
11
4
4
2.68
4.73
2.13
DH-523 Golouma South 53163N/4959E 110/-67 270-282
incl.275-280
12
5
3.43
5.55
DH-526 Golouma West 53355N/4634E 015/-70 302-305 3 9.94
DH-528 Golouma South 53095N/5008E 110/-60 200-204 4 12.52
DH-539 Golouma West 53299N/4673E 015/-67 311-321
incl.314-319
incl.315-317
326-327
10
5
2
1
17.54
31.46
65.69
38.96

Mineralized intervals are based on 1-metre samples utilizing a 1.0 g/t gold cut-off level with a maximum internal dilution of 2 metres. No cutting of gold assays has been employed for reported intervals. The attitude of mineralized intervals varies and reported mineralized intersections may not represent true widths.

Additional deep drilling is scheduled towards better defining the underground mining potential at both Golouma West and Golouma South.

MASATO DEPOSIT

A number of drill holes completed along the strike length of the near surface Masato oxide deposit were drilled to provide detailed Specific Gravity Determination values and assist with geological interpretation of the oxide zones previously identified. This set of in-fill core holes provided some very encouraging interval widths and grades. Material from these drill holes has been collected under the supervision of Ausenco Minerals Canada Ltd. and submitted for detailed metallurgical test work focusing on the heap leach amenability for the Masato oxide resource. Significant results from these drill holes are summarized in the following table:

Drill Hole Grid
Co-ordinate
Azimuth/
Dip
From - To
(m)
Interval
(m)
Gold
(g/t)
DH-452 60008N/4839E 110/-50 17-25 8 2.75
DH-454 60337N/4898E 100/-55 9-36 27 2.85
DH-457 60339N/4878E 100/-50 23-58 35 1.91
DH-460 60365N/4903E 100/-50 7-18
27-39
incl.35-36
11
12
1
2.60
3.98
36.35
DH-461 60431N/4894E 100/-50 6-38
incl.10-19
41-50
incl.42-43
32
9
9
1
1.13
2.06
2.77
11.18
DH-463 60432N/4980E 240/-50 89-91 2 6.24
DH-465 59810N/4700E 110/-50 51-62 11 2.61
DH-467 59730N/4690E 110/-60 0-3 3 2.66
DH-469 59626N/4617E 110/-50 3-12
incl.7-11
48-51
55-63
9
4
3
8
2.60
4.74
1.59
1.58
DH-471 59585N/4615E 110/-45 28-49
incl.38-43
21
5
1.47
2.87
DH-472 59550N/4595E 110/-50 9-12 3 1.59
DH-473 59524N/4550E 110/-50 0-4
20-42
incl.36-38
69-76
4
22
2
7
1.26
5.78
48.54
1.63
DH-474 59700N/4650E 110/-50 32-64
incl.32-34
and 54-57
32
2
3
1.32
4.36
3.10
DH-475 59265N/4553E 110/-55 34-44
incl.36-38
54-57
64-68
10
2
3
4
2.76
5.67
2.61
1.48
DH-478 59184N/4544E 110/-50 10-15
incl.10-11
63-83
incl.72-73
5
1
20
1
2.14
7.32
3.08
31.82

Mineralized intervals are based on 1-metre samples utilizing a 0.5 g/t gold cut-off level with a maximum internal dilution of 4 metres. No cutting of gold assays has been employed for reported intervals. The attitude of mineralized intervals varies and reported mineralized intersections may not represent true widths.

REGIONAL EXPLORATION
KOBOKOTO ALPHA PROSPECT


The Kobokoto Alpha prospect is presently defined by a >100 ppb gold-in-soil geochemical anomaly, displaying both NW and NE trending structures, over a 150-metre by 600-metre area. This target demonstrates one of the highest grade gold-in-soil anomalies anywhere on the OJVG Sabodala Property, with 15 soil samples in excess of 1.0 g/t gold including high values 10.8 g/t, 12.1 g/t and 29.3 g/t gold.

A series of excavator trenches completed over the Kobokoto Alpha anomaly has verified the two structural orientations. Two trenches in particular, TRX-316 and TRX-317, have both successfully intersected an undrilled NW-trending mineralized zone as follows:

  • TRX-316 2.91 g/t gold over 9 metres (including 6.66 g/t gold over 3 metres)
  • TRX-317 483.7 g/t gold over 6 metres (including 1,419 g/t gold over 2 metres)
Drilling is now under way at the Kobokoto Alpha Prospect.

NEW DISCOVERY - KOTOUNIOKOLLA

Recent prospecting has identified a new gold discovery, Kotouniokolla, located approximately 3.5 kilometres southwest of the Golouma South deposit. A detailed soil sampling grid over this area has outlined a >100 ppb gold-in-soil anomaly measuring 250 metres in a NW-SE orientation and 450 metres in a NE-SW orientation. A total of ten rock samples, collected along an approximate 150-metre extent at Kotouniokolla, have returned favourable results including high values of up to 4.05 g/t gold, 5.42 g/t gold, 29.51 g/t gold and 269.4 g/t gold. The range of the results from these ten samples was 0.16 g/t gold to 269.4 g/t gold.

Additional prospecting, trenching and drilling are planned for the next phase of evaluation at Kotouniokolla.

Doug Turnbull, P. Geo., a "qualified person" for the purposes of National Instrument 43-101, has verified the data disclosed in this news release. William Bond, P. Geo., also a "qualified person" for the purposes of National Instrument 43-101, has supervised geologic field procedures. TSL Laboratories in Saskatoon carried out all assaying under industry-standard QA/QC procedures.

Oromin also reports that it has granted incentive stock options entitling the purchase of up to 75,000 shares of Oromin under its Stock Option Plan, subject to regulatory approval. The options are exercisable at a price of $0.90 per share until October 7, 2014.

To find out more about Oromin Explorations Ltd., visit www.oromin.com. Please refer to the maps which set out the Sabodala deposits and zones under "investor info/articles and reports" on the website, and our previous news releases, for additional project information.

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

"Chet Idziszek"
Chet Idziszek, President

Cautionary Statement
This document contains "forward-looking statements" within the meaning of applicable Canadian securities regulations. All statements other than statements of historical fact herein, including, without limitation, statements regarding exploration plans and our other future plans and objectives, are forward-looking statements that involve various risks and uncertainties. Such forward-looking statements include, without limitation, estimates of exploration investment and the scope of exploration programs. There can be no assurance that such statements will prove to be accurate, and future events and actual results could differ materially from those anticipated in such statements. Important factors that could cause actual results to differ materially from our expectations are disclosed in the Company's documents filed from time to time via SEDAR with the Canadian regulatory agencies to whose policies we are bound. Forward-looking statements are based on the estimates and opinions of management on the date the statements are made, and we do not undertake any obligation to update forward-looking statements should conditions or our estimates or opinions change. Forward-looking statements are subject to risks, uncertainties and other factors, including risks associated with mineral exploration, price volatility in the mineral commodities we seek, and operational and political risks. Readers are advised not to place undue reliance on forward-looking statements.

Schedule A
Epsilon Deposit
Drill Hole Grid
Co-ordinate
Azimuth/
Dip
From -- To
(m)
Interval
(m)
Gold
(g/t)
DH-67 3700N/5415E 150º/-45º 145-147 2 25.07
DH-68 3661N/5462E 150º/-45º 109-110 1 162.30
DH-70 3672N/5518E 182º/-45º 85-87 2 1.91
DH-72 3661N/5462E 182º/-45º 81-84
incl. 81-82
3
1
98.37
289.00
DH-73 3661N/5462E 182º/-60º 162-170
incl. 163-166
8
3
17.61
38.36
DH-76 3700N/5415E 180º/-45º 46-49 3 1.15
DH-456 3528N/5337E 030°/-50° 104-106
incl. 105-106
2
1
13.09
24.78
DH-503 3578N/5390E 030°/-45° 17-20
incl. 18-19
24-25
81-83
3
1
1
2
12.72
30.54
5.08
3.12
DH-504 3578N/5390E 030°/-50° 19-21
33-34
2
1
6.75
15.43
DH-505 3559N/5396E 030°/-45° 40-44
incl. 41-43
94-97
incl. 94-95
4
2
3
1
81.10
160.96
4.65
12.93
DH-512 3559N/5396E 030°/-77° 184-187
incl. 185-186
3
1
5.04
13.39
DH-515 3537N/5384E 030°/-77° 78-82
incl. 80-81
230-231
4
1
1
7.35
22.02
113.90
DH-504 3578N/5390E 030°/-50° 19-21
33-34
2
1
6.75
15.43
DH-505 3559N/5396E 030°/-45° 40-44
incl. 41-43
94-97
incl. 94-95
4
2
3
1
81.10
160.96
4.65
12.93
DH-512 3559N/5396E 030°/-77° 184-187
incl. 185-186
3
1
5.04
13.39
DH-515 3537N/5384E 030°/-77° 78-82
incl. 80-81
230-231
4
1
1
7.35
22.02
113.90
DH-520 53553N/5410E 030/-45 48-50
incl.49-50
3
1
27.79
67.64
DH-522 53553N/5410E 030/-60 52-56
incl.55-56
124-129
incl.127-129
4
1
5
2
196.27
763.10
4.90
7.56
DH-524 53553N/5410E 030/-75 161-162
170-171
1
1
58.02
3.14
DH-527 53585N/5350E 030/-45 7-8 1 16.74
DH-529 53585N/5350N 030/-60 3-5 2 2.62
RC-170 3568N/5486E 030°/-50° 76-79
incl. 76-77
3
1
50.39
122.40
RC-173 3578N/5469E 030°/-50° 69-71
incl. 69-70
2
1
8.08
15.60
RC-174 3560N/5459E 030°/-50° 89-93
incl. 91-92
4
1
12.50
41.19
RC-175 3573N/5444E 030°/-50° 80-83
incl. 81-82
3
1
10.24
28.33
RC-176 3590N/5454E 030°/-50° 51-56
incl. 54-56
5
2
19.97
49.93
RC-177 3608N/5464E 030°/-50° 38-41
incl. 38-39
3
1
16.33
30.32
RC-267 3568N/5486E 030°/-60° 61-64 3 1.50
RC-268 3568N/5486E 30°/-68° 153-156
159-164
incl. 160-161
167-173
incl. 167-170
3
5
1
6
3
5.00
7.40
29.25
13.08
23.75
RC-578 53553N/5375E 030°/-50° 56-68
incl. 56-63
incl. 60-61
125-127
12
7
1
2
10.20
17.13
107.00
6.83
RC-579 53501N/5345E 030°/-50° 192-204
incl. 195-196
and 199-202
incl. 201-202
209-217
incl. 213-217
incl. 215-216
12
1
3
1
8
4
1
23.53
76.75
60.14
128.90
16.54
32.48
114.40
RC-637 1453565N/815383E 030°/-50° 35-42
36-38
7
2
24.56
83.10
RC-639 1453586N/815370E 030°/-50° 15-22
incl. 15-16
incl. 18-19
7
1
1
4.13
11.44
13.72
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