Orezone Resources Inc.

Orezone Resources Inc.

March 23, 2005 16:36 ET

Orezone Resources Inc./Initial Metallurgical Testing Indicates Excellent Recoveries at Essakan




MARCH 23, 2005 - 16:36 ET

Orezone Resources Inc./Initial Metallurgical Testing
Indicates Excellent Recoveries at Essakan

MONTREAL, QUEBEC--(CCNMatthews - March 23, 2005) - Orezone Resources
Inc. (TSX:OZN)(AMEX:OZN) is pleased to announce the results from initial
metallurgical testing done on two samples from the Essakan Main Zone
("EMZ") by SGS Lakefield in South Africa. The objective of the study was
to investigate how near surface oxide material and deeper sulphide
material (below 75m depth) would react to standard gravity recovery and
cyanide leaching. The results are extremely encouraging as average gold
recoveries exceeded 95 per cent for both the oxide and sulphide material
with more than 50 per cent of the gold reporting to the gravity circuit
and the remaining gold leaching well within a 24 hour period. There was
no evidence of any characteristics that could negatively impact gold
recovery times and costs.

Gravity Leach Recovery
Recovery (%)(1) Recovery (%)(1,2)
Back primary (%)(1,2) gravity
Head Calculated concentrate mids/tailings plus
grade Grade portion portion leaching
g/t g/t
Oxide 1.36 2.08 51.62 97.95 99.01
Sulphide 2.97 4.40 83.28 72.75 95.44

1. Because of the coarse nature of the gold in the Essakan deposit,
recoveries are based on the back calculated grade
2. Based on 24 hour cyanide leach

Ron Little, President of Orezone Resources commented that "We are
extremely encouraged by the test results which indicate that very good
gold recoveries can be achieved using standard milling processes. We are
also pleased that the sulphide material is very clean and leaches well
as this will allow us to model the deposit to greater depths." He also
added that "While more detailed metallurgical testing will be carried
out as part of completing a feasibility study, initial indications are
that the EMZ will be a simple deposit to process."

Gold Fields Limited can earn a 50 per cent interest in the Essakan
Property by spending US $8 million over five years, and can increase its
interest to 60 per cent by financing and completing a bankable
feasibility study. Gold Fields will surpass US $8 million in
expenditures by this summer and has made Essakan its top priority with
the objective of completing a new resource calculation by June of this
year, commencing a full feasibility study by September and making a
production decision by June, 2006. Orezone is currently the operator of
the joint venture.

Orezone Resources Inc. (OZN:TSX, AMEX) is an emerging gold producer that
owns Essakan, the largest gold deposit in Burkina Faso, as well as a
number of other advanced stage projects in West Africa. Burkina Faso is
a politically stable country that is located in one of the world's
fastest growing gold producing regions. Orezone's mission is to create
wealth by discovering and developing the earth's resources in an
efficient and responsible manner. Orezone is based in Ottawa, Canada.

FORWARD-LOOKING STATEMENTS: This news release contains certain
"forward-looking statements" within the meaning of Section 21E of the
United States Securities Exchange Act of 1934, as amended. Except for
statements of historical fact relating to the company, certain
information contained herein constitutes forward-looking statements.
Forward-looking statements are frequently characterized by words such as
"plan," "expect," "project," "intend," "believe," "anticipate",
"estimate" and other similar words, or statements that certain events or
conditions "may" or "will" occur. Forward-looking statements are based
on the opinions and estimates of management at the date the statements
are made, and are subject to a variety of risks and uncertainties and
other factors that could cause actual events or results to differ
materially from those projected in the forward-looking statements. These
factors include the inherent risks involved in the exploration and
development of mineral properties, the uncertainties involved in
interpreting drilling results and other geological data, fluctuating
metal prices, the possibility of project cost overruns or unanticipated
costs and expenses, uncertainties relating to the availability and costs
of financing needed in the future and other factors. The Company
undertakes no obligation to update forward-looking statements if
circumstances or management's estimates or opinions should change. The
reader is cautioned not to place undue reliance on forward-looking


Contact Information

    Orezone Resources Inc.
    Ron Little
    President & CEO
    (613) 241-3699, Toll Free (888) 673-0663
    Orezone Resources Inc.
    Greg Bowes
    Vice President, Corporate Development
    (613) 241-3699, Toll Free (888) 673-0663