OROMIN PR AND ITS NOT THURSDAY!!!
August 17, 2011 14:06 ET
Oromin Explorations Ltd.: Successful Initial Drilling Results atOJVG's Newest Discovery-Mamasato and Best Drilling Result to Date atSekoto
VANCOUVER, BRITISH COLUMBIA--(Marketwire - Aug. 17, 2011) -Oromin Explorations Ltd. (TSX:OLE)(OTCBB:OLEPF) ("Oromin"), on behalfof Oromin Joint Venture Group Ltd. ("OJVG"), is pleased to announceadditional drilling results from the ongoing exploration program at theOJVG Gold Project in Senegal, West Africa. Results presented hereininclude (1) initial drill holes completed at Mamasato, the most recentdiscovery at the OJVG Gold Project, (2) lateral and depth expansiondrilling at the Kinemba, Sekoto and Saboraya discoveries. Please referto the attached map for deposits, discoveries and target locationswithin the OJVG Gold Project, visit the following link: https://media3.marketwire.com/docs/OLEmap817.jpg
EXPLORATION DRILLING – GOLD DISCOVERIES AND TARGETS
Mamasato Discovery
OJVG's most recent gold discovery, Mamasato, is locatedapproximately 4.5 kilometres north of the Golouma deposit andapproximately 2 kilometres southeast of the centre of the Masatodeposit. Mamasato is represented by an 800 to 1,000 metre long,east-west oriented gold-in-soil geochemical anomaly (>100 ppb gold)which is coincident with a series of NNE and E-W oriented quartz veinsystems hosted by two or three sub-parallel sheared and altered zoneswithin a package of mafic volcanics and felsic intrusive units. Mamasatois of compelling interest because it strongly resembles the Goloumadeposit, both visually and structurally with the additional benefit ofsignificantly greater depth of oxidation. Oxide depth averages 40 metresbelow surface and locally reaches 80-metre depths compared to oxide atGolouma which averages 10-metre depths. A key advantage of softer oxidemineralization at the OJVG Gold Project is in enabling greaterthroughput rates for the CIL plant. The following represents the mostsignificant results from initial drilling and trenching at Mamasato:
- 2.86 g/t gold over 6 metres (36-42) in DH-985
- 2.64 g/t gold over 5 metres (40-45) in DH-987
- 10.11 g/t gold over 4 metres (50-54) in DH-998
- 3.58 g/t gold over 5 metres (63-68) in DH-1001
- 2.78 g/t gold over 18 metres in TRX-357 (Section 3+20E)
- 1.18 g/t gold over 9 metres in TRX-360 (Section 1+50E)
- 1.35 g/t gold over 15 metres in TRX-361 (Section 6+20E)
To date, 28 drill holes have been completed at Mamasatotesting the lateral extent of the alteration zone across a 650-metrestrike extent and locally to approximately 250-metres down dip. Resultspresented above and in the accompanying appendix represent only a220-metre strike extent (Sections 0+60E to 2+80E) of the currently knowntarget. The Mamasato alteration zone remains open both along strike andto depth.
Sekoto Discovery
The Sekoto Discovery is located approximately 9 kilometresnortheast of the Golouma deposit and approximately 4 kilometres east ofthe Masato deposit. Sekoto has only recently become the focus ofexploration drilling as a potential Heap Leach deposit. Drill holes todate have now tested approximately 400 metres of strike length to depthsof 100 metres down dip within thicker than usual oxide depths rangingbetween 50 and 75 metres below surface. Previously released results fromSekoto include 0.65 g/t gold over 23 metres and 1.67 g/t gold over 18metres in RC-899. The following outlines the most recent significantresults from Sekoto:
- 0.55 g/t gold over 12 metres (8-20) and 1.16 g/t gold over 6 metres in DH-996
- 1.50 g/t gold over 36 metres (17-53) in DH-999
The 36-metre intersection in DH-999 is entirelywithin the oxide zone and represents the best grade-thickness drillinginterval received to date from this rapidly developing Heap Leachpotential deposit.
Previously announced results and complete interval breakdownsfor the above listed Sekoto drill holes are summarized in theaccompanying appendix.
Kinemba Discovery
The Kinemba Discovery is located approximately 5 kilometressouthwest of the Golouma deposit. At Kinemba, drilling to date hasintersected zones of potential Heap Leach gold mineralization along aminimum strike extent of 550 metres and locally to depths ofapproximately 200 metres. Previously released results from Kinembainclude 2.16 g/t gold over 14 metres in RC-868 and 0.72 g/t gold over 25metres in RC-889. The following outlines the most recent significantresults from Kinemba:
- 2.09 g/t gold over 5 metres (107-112) and 1.66 g/t gold over 7 metres (143-150) in DH-988
- 1.07 g/t gold over 8 metres (17-25) in RC-916
- 0.76 g/t gold over 13 metres (12-25) in RC-917
Previously announced results and complete interval breakdownsfor the above listed Kinemba drill holes are summarized in theaccompanying appendix.
Saboraya Target
The Saboraya Target is very favourably located approximatelymid-way between the Kerekounda and Kourouloulou deposits and issimilarly related to dilational shear-hosted quartz veining. Onlylimited drilling has been completed at Saboraya, testing a strike extentof only 150 metres and to depths of only 100 metres below surface.
Previously released results from Saboraya include 8.91 g/tgold over 5 metres in RC-862 and 3.44 g/t gold over 23 metres in RC-911.The following outlines the most recent significant results fromSaboraya:
- 2.84 g/t gold over 18 metres (0-18) and 1.55 g/t gold over 10 metres (155-165) in RC-912
Previously announced results and complete interval breakdownsfor the above listed Saboraya drill hole are summarized in theaccompanying appendix.
OJVG DEPOSIT RESOURCES
Based on the most recent Resource update completed on behalfof the OJVG utilizing drilling data to the end of 2010, and announced inOromin's News Releases dated May 5 and May 12, 2011, the OJVG GoldProject hosts an Indicated Resource of 3,312,000 ounces of gold and an Inferred Resource of 430,000 ounces of gold, comprised of the following:
- The combined Golouma, Kerekounda and Kourouloulou deposits host an Indicated Resource of 1,380,000 ounces (12,748,000 tonnes grading 3.36 g/t gold) and an Inferred Resource of 180,000 ounces (1,404,000 tonnes grading 4.09 g/t gold).
- The Masato deposit hosts an Indicated Resource of 1,457,000 ounces (35,531,000 tonnes grading 1.28 g/t gold) and an Inferred Resource of 130,000 ounces (3,233,000 tonnes grading 1.25 g/t gold).
- The Bulk Tonnage/Heap Leach deposits host a current Indicated Resource of 475,000 ounces (20,606,000 tonnes grading 0.71 g/t gold) and an Inferred Resource of 120,000 ounces (7,046,000 tonnes grading 0.53 g/t gold).
The 2011 OJVG exploration program is continuing withexcavator trenching on several new exploration targets and furtherdrilling using three drills, including two core drills testing lateraland depth extension potential at the Mamasato discovery.
Technical Supervision
Doug Turnbull, P. Geo., is a qualified person for thepurposes of National Instrument 43-101, and has verified the datadisclosed in this news release. William Bond, P. Geo., is also aqualified person for the purposes of National Instrument 43-101, and hassupervised geologic field procedures. TSL Laboratories in Saskatooncarried 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 and CEO
Cautionary Statement
This document contains "forward-looking statements" withinthe meaning of applicable Canadian securities regulations. Allstatements other than statements of historical fact herein, including,without limitation, statements regarding exploration plans and our otherfuture plans and objectives, are forward-looking statements thatinvolve various risks and uncertainties. Such forward-looking statementsinclude, without limitation, estimates of exploration investment andthe scope of exploration programs. There can be no assurance that suchstatements will prove to be accurate, and future events and actualresults could differ materially from those anticipated in suchstatements. Important factors that could cause actual results to differmaterially from our expectations are disclosed in the Company'sdocuments filed from time to time via SEDAR with the Canadian regulatoryagencies to whose policies we are bound. Forward-looking statements arebased on the estimates and opinions of management on the date thestatements are made, and we do not undertake any obligation to updateforward-looking statements should conditions or our estimates oropinions change. Forward-looking statements are subject to risks,uncertainties and other factors, including risks associated with mineralexploration, price volatility in the mineral commodities we seek, andoperational and political risks. Readers are advised not to place unduereliance on forward-looking statements.
| Bulk Tonnage (Heap Leach) Deposits/Discoveries/Targets |
|
Drill |
Grid |
Azimuth/ |
From - To |
Interval |
Gold Grade |
| Name |
Hole |
Co-Ordinate |
Dip |
(m) |
(m) |
(g/t) |
SEKOTO
|
DH-996
|
61521N/18174E
|
120/-50
|
8-20 |
12 |
0.55 |
| 34-40 |
6 |
1.16 |
| incl.36-38 |
2 |
2.89 |
|
DH-999
|
61631N/18221E
|
120/-50
|
17-53 |
36 |
1.50 |
| incl.22-45 |
23 |
2.15 |
| incl.24-27 |
3 |
4.83 |
| and 26-39 |
3 |
6.05 |
|
RC-899*
|
61447N/18143E
|
120/-50
|
5-28 |
23 |
0.65 |
| incl.17-23 |
6 |
1.20 |
| 56-74 |
18 |
1.67 |
| incl.56-60 |
4 |
5.29 |
| incl.56-57 |
1 |
15.79 |
| 82-88 |
6 |
0.80 |
|
RC-900* |
61427N/18178E |
120/-50 |
17-29 |
12 |
0.84 |
| incl.24-29 |
5 |
1.31 |
|
RC-901* |
61529N/18224E |
120/-50 |
60-64 |
4 |
1.29 |
|
RC-902* |
61557N/18190E |
120/-50 |
24-28 |
4 |
0.65 |
| 68-73 |
5 |
1.67 |
|
RC-903* |
61593N/18204E |
120/-50 |
11-22 |
11 |
0.75 |
| 30-34 |
4 |
0.50 |
|
RC-904* |
61574N/18240E |
120/-50 |
33-36 |
3 |
0.68 |
| 49-55 |
6 |
0.81 |
|
|
|
|
|
|
|
KINEMBA
|
RC-914
|
49512N/11330E
|
090/-50
|
2-8 |
6 |
0.66 |
| 22-29 |
7 |
0.82 |
| 73-85 |
12 |
0.70 |
| incl.78-82 |
4 |
1.41 |
| 107-126 |
19 |
0.66 |
| incl.116-124 |
8 |
1.02 |
|
RC-916 |
49285N/11283E |
090/-50 |
17-25 |
8 |
1.07 |
| incl.17-21 |
4 |
1.79 |
|
RC-917 |
49281N/11325E |
090/-50 |
12-25 |
13 |
0.76 |
| incl.13-20 |
7 |
1.16 |
|
DH-988
|
49367N/11288E
|
090/-50
|
45-49 |
4 |
0.63 |
| 107-112 |
5 |
2.09 |
| 125-133 |
8 |
0.63 |
| 143-150 |
7 |
1.66 |
| incl.148-149 |
1 |
8.50 |
|
RC-881*
|
49040N/11260E
|
090/-55
|
73-78 |
5 |
0.86 |
| 110-121 |
11 |
0.81 |
| incl.113-115 |
2 |
1.62 |
|
RC-882*
|
49080N/11264E
|
090/-50
|
29-37 |
8 |
0.64 |
| 55-60 |
5 |
1.49 |
| incl.58-59 |
1 |
5.56 |
|
RC-889*
|
49440N/11305E
|
090/-60
|
74-85 |
11 |
0.60 |
| incl.80-84 |
4 |
1.29 |
| 135-160 |
25 |
0.72 |
| incl.135-138 |
3 |
2.16 |
| incl.136-137 |
1 |
5.37 |
| and 153-160 |
7 |
1.16 |
| incl.156-159 |
3 |
2.02 |
|
RC-890*
|
49400N/11260E
|
090/-55
|
169-198 |
29 |
0.55 |
| incl.169-180 |
11 |
0.69 |
| and 192-195 |
3 |
1.15 |
|
DH-795* |
49400N/11430E |
090/-55 |
46-51 |
5 |
1.92 |
|
DH-803* |
49400N/11300E |
090/-55 |
35-41 |
6 |
1.07 |
| 141-151 |
10 |
2.40 |
|
DH-810* |
49400N/11375E |
090/-55 |
16-21 |
5 |
1.73 |
| 42-49 |
7 |
1.64 |
|
|
|
|
|
|
|
| *Previously reported. |
| Mineralized intervals are based on 1-metre samples utilizing 0.2 g/t gold cut-off levels with a maximum internal dilution of 4 metres. The attitude of mineralized intervals varies and reported mineralized intersections may not represent true widths. |