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OceanaGold announces updated Resource & Reserve statement

/NOT FOR DISSEMINATION OR DISTRIBUTION IN THE UNITED STATES AND NOT FOR 
DISTRIBUTION TO US NEWSWIRE SERVICES./ 
MELBOURNE, Australia, March 25, 2013 /CNW/ - OceanaGold Corporation (ASX: OGC, 
TSX: OGC, NZX: OGC) (the "Company") is pleased to announce the updated 
Resource & Reserve statement as at 31 December 2012. 
Highlights 


    --  Total Company Proven and Probable gold reserves virtually
        offset 2012 mining depletion and stand at 3.64 Moz gold and
        0.24 Mt copper.
    --  Macraes Goldfield Measured and Indicated resources are stable
        at 3.90 Moz of gold (net of mine depletion) for the third
        consecutive year.
    --  Reefton Goldfield mine life confirmed to 2017.
    --  Total Measured and Indicated resources for the Company stand at
        6.73 Moz of gold and 0.29 Mt of copper with resource growth
        offsetting 2012 mining depletion.

In the Philippines, Proven and Probable reserves at Didipio stand at 50.1 Mt @ 
1.05 g/t Au and 0.47% Cu for 1.69 Moz gold and 0.24 Mt copper.

Proven and Probable reserves in New Zealand stand at 51.8 Mt @ 1.17 g/t Au for 
1.95 Moz gold and remains relatively unchanged compared to 2011. The increase 
in reserves net of depletion at Macraes Open Pit were offset by a decrease in 
gold inventory at Reefton. Reserves at Frasers Underground were relatively 
unchanged year on year at 0.18 Moz as a result of a successful resource 
definition drilling program.

Using US$1,250/oz Au and US$3.25/lb Cu, total Company Proven and Probable 
reserves are stable at 3.64 Moz of gold with copper reserves increasing 
slightly to 0.24 Mt.

Measured and Indicated resources (inclusive of reserves) for the Company now 
total 6.73 Moz of gold and 0.29 Mt of copper. Gold inventory net of mining 
depletion is marginally ahead, whilst copper inventory remains in line when 
compared with the prior year end. At Macraes in New Zealand, the Company 
successfully replaced mining depletion with resources remaining stable at 3.90 
Moz of gold. Total Company Inferred resources are now 3.80 Moz of gold and 
0.05 Mt of copper.

The update to the resource for the Blackwater Project located near the Reefton 
Mine on the West Coast region of the South Island of New Zealand is underway 
following the completion of the drill program in early 2013. The Company 
expects to provide a resource update on this project in April.

OceanaGold Managing Director and CEO, Mick Wilkes, said "OceanaGold achieved 
replacement of resources net of mine depletion resulting in stable gold and 
copper inventories. This provides a solid mineral endowment as the Company 
transforms itself in 2013 to a multinational gold producer. We will continue 
to invest in exploration opportunities in New Zealand and we look forward to 
commencing a significant exploration program across our broad portfolio of 
exploration prospects in the Philippines once the renewal on our exploration 
permits is received."

Table A: OceanaGold Reserve statement as at December 31, 2012
                    

RESERVE               PROVEN                  PROBABLE              TOTAL RESERVE
    AREA   Mt   Au   Au  Cu %  Cu   Mt   Au   Au  Cu %  Cu    Mt   Au   Au  Cu %  Cu
              g/t  Moz        Mt       g/t  Moz        Mt        g/t  Moz        Mt

MACRAES  20.0 1.18 0.76           25.9 1.07 0.89           45.9  1.12 1.65         

REEFTON  1.1  1.87 0.07           4.8  1.50 0.23            5.9  1.57 0.30         

DIDIPIO  15.0 1.50 0.73 0.60 0.09 35.1 0.86 0.97 0.42 0.15 50.1  1.05 1.69 0.47 0.24

  TOTAL  36.1 1.34 1.55      0.09 65.8 0.99 2.09      0.15 101.9 1.11 3.64      0.24

Figures are in-situ delivered to ROM. Macraes and Reefton cut-offs are based 
on US$1,250/oz gold (0.5 g/t Au for Open Pits and 1.0 g/t Au cut-off for 
Frasers Underground). Didipio cut-offs are Net Metal Value based, using 
US$1,250/oz gold and US$3.25/lb copper (0.5 g/t EqAu for open pit and 1.9 g/t 
EqAu for underground).

Table B: OceanaGold Resource statement as at December 31, 2012
                                                                                                            

RESOURCE             MEASURED                 INDICATED        MEASURED & INDICATED         INFERRED RESOURCE
    AREA   Mt   Au   Au  Cu %  Cu    Mt   Au   Au  Cu %  Cu    Mt   Au   Au  Cu %  Cu    Mt   Au   Au  Cu %  Cu
              g/t  Moz        Mt        g/t  Moz        Mt        g/t  Moz        Mt        g/t  Moz        Mt

MACRAES  28.7 1.38 1.27           73.1  1.12 2.64           101.8 1.19 3.90           51.2  1.15 1.89         
 TOTAL

REEFTON  1.7  1.90 0.11           12.4  1.51 0.60           14.2  1.56 0.71            4.8  3.26 0.50         
 TOTAL


SAMS
  CREEK                                                                               18.4  1.70 1.01         
  TOTAL 
DIDIPIO  17.1 1.59 0.87 0.57 0.10 50.5  0.76 1.24 0.37 0.19 67.6  0.97 2.11 0.42 0.29 26.0  0.47 0.40 0.21 0.05
 TOTAL 
 TOTAL   47.5 1.47 2.25      0.10 136.0 1.02 4.48      0.19 183.5 1.14 6.73      0.29 100.5 1.18 3.80      0.05
RESOURCE 
All resources are inclusive of reserves. Macraes and Reefton Open Pit 
resources are reported at a 0.5 g/t Au cut-off, and Sams Creek resources at a 
0.7 g/t Au cut-off. Underground resources are reported within geological 
constraints. For Didipio: 0.4 g/t EqAu >2,390mRL and 1.5 g/t EqAu <2,390mRL. 
No resource is reported below 2,180mRL. EqAu is gold equivalence based on 
US$1,250/oz gold and US$3.25/lb copper. The Sams Creek project is 60% owned by 
OceanaGold. 
Technical Disclosure 
The estimates of Mineral Resources and Reserves were prepared in accordance 
with the standards set out in the Australasian Code for the Reporting of 
Mineral Resources and Ore Reserves of December 2004 (the "JORC Code") and in 
accordance with National Instrument 43-101 of the Canadian Securities 
Administrators ("NI 43-101"). The JORC Code is the accepted reporting standard 
for the Australian Stock Exchange Limited ("ASX") and the New Zealand Stock 
Exchange Limited ("NZX"). 
Unless stated otherwise, in respect of the mineral projects of the Company 
referred to in this resource update, the scientific and technical information 
(including disclosure regarding Mineral Resources and Mineral Reserves) is 
based upon the following NI 43-101 compliant technical reports (collectively, 
the "Technical Reports"): 
(a)   "Technical Report for the Macraes Project located in the Province 


      of Otago, New Zealand" dated February 12, 2010, prepared by R.
      Redden, Development and Technical Services Manager, and J.G.
      Moore, Group Mine Geology Manager, both of Oceana Gold (New
      Zealand) Limited (the "Macraes Technical Report");

(b)   "Independent Technical Report for the Reefton Project located in
      the Province of Westland, New Zealand" dated May 9, 2007,
      prepared by J. S. McIntyre, I. R. White and R. S. Frew of Behre
      Dolbear Australia Pty Limited, B. L. Gossage of RSG Global Pty
      Limited and R. R. Penter of GHD Limited (the "Reefton Technical
      Report"); and

(c)   "Technical Report for the Didipio Project Located in Luzon,
      Philippines" dated July 29, 2011, prepared by R. Redden,
      Development and Technical Services Manager, and J.G. Moore, Group
      Mine Geology Manager, both of Oceana Gold (New Zealand) Limited
      (the "Didipio Technical Report").

Each of the authors of the Technical Reports is independent of the Company 
within the meaning of NI 43-101 except for R. Redden and J.G. Moore. R. Redden 
was a full-time employee of the Company's subsidiary, Oceana Gold (New 
Zealand) Limited at the time of writing, and J.G. Moore was, and remains, a 
full-time employee of Oceana Gold (New Zealand) Limited. The Technical Reports 
have been filed with the Canadian securities regulatory authorities and are 
available for review at www.sedar.com under the Company's profile.

Where the Mineral Reserve and Mineral Resource estimates of the Company's 
Reefton and Macraes operations set out in this update differ from those set 
out in the Technical Report for the relevant property, such differences arise 
from updates to such Mineral Reserve and Mineral Resource estimates as a 
result of depletion through production and addition due to exploration 
activities. The latest updates of Mineral Reserves for each of the Company's 
New Zealand projects were prepared by, or under the supervision of, K. 
Madambi, while the Mineral Reserves for the Didipio project were prepared 
under the supervision of R. Corbett. The updates of Mineral Resources for the 
Reefton and Didipio projects were prepared by, or under the supervision of, J. 
G. Moore, whilst the updates of Mineral Resources for the Macraes project were 
updated by S. Doyle. S. Doyle, K. Madambi, and J. G. Moore are Members and 
Chartered professionals with the Australasian Institute of Mining and 
Metallurgy and each is a "qualified person" for the purposes of NI 43-101. R. 
Corbett is a Registered Professional Engineer (Ontario) and is a "qualified 
person" for the purposes of NI 43-101.

All such persons are "qualified persons" for the purposes of NI 43-101 and 
have sufficient experience relevant to the style of mineralisation and type of 
deposit under consideration and to the activity which they are undertaking to 
qualify as a Competent Person as defined in the JORC Code. Messrs Corbett, 
Doyle, Madambi, and Moore consent to inclusion in this Resource and Reserve 
update of the matters based on their information in the form and context in 
which it appears.

Cautionary Note Regarding Mineral Resources and Mineral Reserves
The Company's disclosure of Mineral Reserve and Mineral Resource information 
is governed by NI 43-101 under the guidelines set out in the Canadian 
Institute of Mining, Metallurgy and Petroleum (the "CIM") Standards on Mineral 
Resources and Mineral Reserves, adopted by the CIM Council, as may be amended 
from time to time by the CIM ("CIM Standards"). The disclosure of Mineral 
Reserve and Mineral Resource information for properties held by the Company is 
based on the reporting requirements of the JORC Code.

CIM definitions of the terms "Mineral Reserve", "Proven Mineral Reserve", 
"Probable Mineral Reserve", "Mineral Resource", "Measured Mineral Resource", 
"Indicated Mineral Resource" and "Inferred Mineral Resource", are 
substantially similar to the JORC Code corresponding definitions of the terms 
"ore reserve", "proved ore reserve", "probable ore reserve", "Mineral 
Resource", "Measured Mineral Resource", "Indicated Mineral Resource" and 
"Inferred Mineral Resource", respectively. Estimates of Mineral Resources and 
Mineral Reserves prepared in accordance with the JORC Code would not be 
materially different if prepared in accordance with the CIM definitions 
applicable under NI 43-101.

There can be no assurance that those portions of such Mineral Resources that 
are not Mineral Reserves will ultimately be converted into Mineral Reserves. 
Mineral Resources are not Mineral Reserves and do not have demonstrated 
economic viability. All Mineral Reserves are within the Mineral Resource.

About OceanaGold
OceanaGold Corporation is a significant multinational gold producer with 
projects located on the South Island of New Zealand and in the Philippines. 
The Company's assets encompass New Zealand's largest gold mining operation at 
the Macraes goldfield in Otago which is made up of the Macraes Open Pit and 
the Frasers Underground mines. Additionally on the west coast of the South 
Island, the Company operates the Reefton Open Pit mine. The Company's Didipio 
Mine in northern Luzon, Philippines is in commissioning and is expected to 
produce 100,000 ounces of gold and 14,000 tonnes of copper per year on average 
over an estimated 16 year mine life. OceanaGold expects to produce 285,000 to 
325,000 ounces of gold in FY2013 from the New Zealand and Philippine 
operations combined.

OceanaGold is listed on the Toronto, Australian and New Zealand stock 
exchanges under the symbol OGC.

Cautionary Statement
Statements in this release may be forward-looking statements or 
forward-looking information within the meaning of applicable securities laws. 
Any statements that express or involve discussions with respect to 
predictions, expectations, beliefs, plans, projections, objectives, 
assumptions or future events or performance (often, but not always, using 
words or phrases such as "expects" or "does not expect", "is expected", 
"anticipates" or "does not anticipate", "plans", "estimates" or "intends", or 
stating that certain actions, events or results "may", "could", "would", 
"might" or "will" be taken, occur or be achieved) are not statements of 
historical fact and may be forward-looking statements. Forward-looking 
statements such as production forecasts are subject to a variety of risks and 
uncertainties which could cause actual events or results to differ materially 
from those reflected in the forward-looking statements. They include, among 
others, the accuracy of mineral reserve and resource estimates and related 
assumptions, inherent operating risks and those risk factors identified in the 
Company's most recent Annual Information Form prepared and filed with 
securities regulators which is available on SEDAR at www.sedar.com under the 
Company's name. There are no assurances the Company can fulfil such 
forward-looking statements and, subject to applicable securities laws, the 
Company undertakes no obligation to update such statements. Such 
forward-looking statements are only predictions based on current information 
available to management as of the date that such predictions are made; actual 
events or results may differ materially as a result of risks facing the 
Company, some of which are beyond the Company's control. Accordingly, 
readers should not place undue reliance on forward-looking statements. The 
information contained in this release is not investment or financial product 
advice.

OceanaGold Corporation

Investor Relations - Melbourne Nova Young or Darren Klinck Tel: +61(3) 9656 
5300

Investor Relations - Toronto Sam Pazuki Tel: +1 416 915 3123

info@oceanagold.com |www.oceanagold.com

SOURCE: OceanaGold Corporation

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CO: OceanaGold Corporation
NI: MNG PCS FIELD 

-0- Mar/25/2013 00:05 GMT