Orex And Joint Venture Partner Osisko Complete Phase 2 Delineation Diamond Drilling at Goldboro

OREX EXPLORATION INC. (TSX VENTURE:OX)(FRANKFURT:O5D) is pleased to provide
shareholders with initial results from the Phase 2F drilling campaign at the
Company's wholly-owned Goldboro Gold Property. As previously announced on
January 27, 2010, Osisko Mining Corporation budgeted $2.8 million for the Phases
2D, 2E and 2F drilling campaigns and for a regional compilation and Goldboro
reconnaissance program.


Osisko began with the 4,728 m / 18 holes Phase 2F drilling campaign, which is
set to replace some incomplete and/or non-compliant historic drill results with
compliant data primarily in the deeper portions of the Ramp Area Mineral
Resources and extending westward towards West Goldbrook. Following Phase 2F,
Osisko continued with the Phases 2D (5,492 m / 28 holes) and 2E (2,769 m / 13
holes) drilling campaigns, which continued westward along the remaining 1.7 km
segment of the Boston Richardson Deformation Zone from the Ramp through West
Goldbrook to Dolliver Mountain.


Orex is pleased to inform shareholders that all 59 holes for the Phases 2D, 2E
and 2F drilling campaign, representing 12,989 metres, have been completed. All
holes have been logged and sampled, and all samples have been shipped to the ALS
Laboratory facilities in Sudbury, Ontario for preparation and analysis in
Vancouver, British Columbia. Highlights from the first 6 holes (one of which
assays are still pending) of the Phase 2F drilling campaign are presented below:




---------------------------------------------------------------------
                                                   CORE          GOLD
HOLE #               FROM (m)        TO (m)   LENGTH(m)    GRADE(g/t)
---------------------------------------------------------------------
OSK-10-01              190.55        206.55       16.00          0.87
                       268.25        275.10        6.85          1.42
---------------------------------------------------------------------
OSK-10-02      Assays pending                                        
---------------------------------------------------------------------
OSK-10-03               47.85         48.35        0.50      16.95(i)
                        78.00         88.00       10.00          0.62
                       117.50        125.00        7.50          2.91
including              117.50        119.00        1.50         13.85
                       137.00        149.00       12.00          1.19
                       161.50        202.50       41.00          0.55
                       230.85        264.45       33.60          0.67
including              245.08        245.50        0.42         12.50
including              245.50        246.00        0.50      10.35(i)
---------------------------------------------------------------------
OSK-10-05               61.50         63.00        1.50          5.88
                       126.50        165.85       39.35          0.61
including              137.50        138.50        1.00          5.99
including              146.70        147.35        0.65          5.01
                       205.95        220.50       14.55          1.57
including              209.00        209.50        0.50      12.90(i)
including              209.50        210.00        0.50         12.45
---------------------------------------------------------------------
OSK-10-07              163.00        260.00       97.00          0.70
including              167.75        168.25        0.50      10.75(i)
including              247.80        248.80        1.00         18.30
---------------------------------------------------------------------
OSK-10-08              114.00        177.50       63.50          0.53
including              155.35        155.85        0.50      25.70(i)
                       204.40        228.30       23.90          1.01
including              213.52        214.02        0.50       7.04(i)
including              215.35        215.85        0.50      20.80(i)
---------------------------------------------------------------------
(i) Metallic Screen Assay                                                 



Mark Billings, President and CEO of Orex, commented, "These initial results from
Phase 2F are very encouraging, as they will help us validate our theory that the
mineralized zones at Goldboro can be interpreted as larger structural domains
rather than just in narrow, high-grade belts. As we know, within the defined
larger structural domains model, the main constraints to the distribution of
grade were the un-sampled intervals assigned 0 g/t gold values in the historic
drilling. Some 97 holes from the 254 drill hole historic database (pre-1996)
were selectively assayed and contain un-sampled intervals. All 59 current
diamond drill holes, as well as the 67 holes drilled between 2004 and 2009, were
sampled continuously through the larger mineralized sections. As we expected,
with this current infill drilling, we are seeing significant lower-grade gold
mineralization, in areas where we previously assumed there was 0 g/t gold."


QA/QC Sampling and Analytical Protocols

Sample preparation and assaying are being performed by the ALS Laboratories
Group using conventional Fire-Assaying with an Atomic Absorption Spectrometry
finish. The NQ-sized drill core is being logged, sampled, bagged, tagged and
sealed at the Goldboro site by qualified personnel. Samples were inserted in
numbered pails, sealed and shipped in batches to the sample preparation
laboratory in Sudbury, Ontario by commercial trucking. Sample pails were opened
at the laboratory; sample bags were checked, contents dried and weighed; crushed
to -10 mesh (2mm), followed by pulverizing a 250 gram sample fraction to -150
mesh size (0.125mm), from which a 50 gram sample of the pulp was fire assayed.
Pulp duplicate check assays are completed in each batch of samples assayed and
Total Metallic Screen assays for samples containing visible gold are included in
the initial assay protocols. Field blank and certified reference standards are
also routinely included to monitor the laboratories' performance.


After review of initial assay results and reconciliation with the logged zones
of mineralization, specific samples will be identified for re-assaying by the MS
method while other samples will have a second pulp prepared from the coarse
reject and re-assayed by the AAS Method. Multiple assay determinations provide a
more accurate determination of gold content in the samples.


The Goldboro Gold Property

The current Mineral Resource Estimates ("MRE") for Goldboro at a cut-off gold
grade of 1.5 g/t are 2.711 million tonnes grading 4.56 g/t gold, totalling
397,200 gold ounces in the Measured+Indicated Resources categories, with an
additional 3.438 million tonnes grading 3.67 g/t gold totalling 405,926 gold
ounces in the Inferred Resource category. Assuming a lower 0.5 g/t cut-off, the
Measured+Indicated Resources are 7.933 million tonnes grading 2.13 g/t gold
totalling 542,000 gold ounces, with additional Inferred Resources of 10.389
million tonnes grading 1.78 g/t gold totalling 594,121 gold ounces (refer to
Orex's news release dated August 4, 2009, and the NI 43-101 Technical Report
posted on SEDAR at www.sedar.com).


Option on Goldboro Gold Property Granted to Osisko Mining Corporation

In order to acquire a 50% undivided interest in the Goldboro Gold Property on or
before September 29, 2013 (the Initial Option), Osisko shall incur exploration
and development expenditures in the amount of at least $1,500,000 on or before
September 29, 2010; in the aggregate amount of at least $3,500,000 on or before
September 29, 2011; and in the aggregate amount of at least $8,000,000 over the
following two years, that is, on or before September 29, 2013. Osisko may, at
its sole discretion, accelerate and apply exploration and development
expenditures to future years' expenditures and, accordingly, the Initial Option
may be exercised sooner. Osisko shall solely fund a prefeasibility study to earn
an aggregate 60% interest (that is, an additional 10% interest) in the Property
on or before September 29, 2015 (the Additional Option).


About Orex Exploration Inc. 

Orex Exploration Inc. is a Canadian-based junior resource and exploration
company trading under the symbol OX on the TSX Venture Exchange and O5D on the
Frankfurt Stock Exchange. The Company holds a 100% interest in the Goldboro Gold
Project in Nova Scotia. You are invited to browse the Company's website at
www.orexexploration.ca.


The technical information contained in this news release has been prepared by
Mr. Alex Horvath, B.A.Sc., P. Eng., of A. S. Horvath Engineering Inc. (Ottawa,
Ontario), Technical Advisor to Orex and Qualified Person under National
Instrument 43-101 regulations.


Neither the TSX Venture Exchange nor its regulation services provider (as that
term is defined in the policies of the TSX Venture Exchange) accepts
responsibility for the adequacy or accuracy of this news release. The statements
made in this news release that are not historical facts are "forward-looking
statements" and readers are cautioned that any such statements are not
guarantees of future performance, and that actual developments or results, may
vary materially from those in these "forward-looking" statements.
Orex Exploration Inc. (TSXV:OX)
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