February 25, 2005 17:00 ET

Aur Resources Inc. Announces Increases in the Supergene Copper Reserves at the Andacollo Mine in Chile




FEBRUARY 25, 2005 - 17:00 ET

Aur Resources Inc. Announces Increases in the
Supergene Copper Reserves at the Andacollo Mine in

TORONTO, ONTARIO--(CCNMatthews - Feb. 25, 2005) - Aur Resources Inc.
announces that an updated reserve and resource calculation incorporating
the results of drilling carried out to April 2004 has increased the
proven and probable reserves at the Andacollo Mine by 2.9 million tonnes
to 17.2 million tonnes at a grade of 0.71% Cu (0.63% SCu). The measured
and indicated resources (including the reserves) were 54.5 million
tonnes at a grade of 0.56% Cu (0.49% SCu), (Table 1). The increase in
the reserves is principally a result of the upgrading of resources into
reserves. The updated reserves and resources are as at December 31, 2004
after accounting for 3.4 million tonnes of ore mined in 2004.

The updated reserves contain 268 million pounds of copper, an increase
of 34 million pounds from December 31, 2003 after accounting for 58
million pounds of copper mined in 2004. The supergene reserves and
resources will allow for copper production to continue into 2009.

The Andacollo Mine is an open pit copper mine located in north-central
Chile which is owned 63% by and operated by Aur.

Table 1

Mineral Reserves

Category t (000's) %TCu %SCu
--------- ---- ----
Proven 17,219 0.71 0.63
Probable 13 0.53 0.52
Total Reserves 17,232 0.71 0.63

Mineral Resources (including Mineral Reserves)

Category t (000's) %TCu %SCu
--------- ---- ----
Measured 49,689 0.58 0.49
Indicated 4,775 0.50 0.45
Total Resources 54,464 0.56 0.49

Inferred 3,530 0.50 0.46


"t (000's)" means thousands of tonnes; "%TCu" is the percent assayed
total copper grade; "%SCu" is the percent soluble copper grade, which is
the sum of the acid soluble copper assay and the cyanide soluble copper
assay; "m" means metres.

The Andacollo mineral reserve and resource estimates have been prepared
and classified in accordance with the standards established under
National Instrument 43-101, Standards of Disclosure for Mineral Projects
of the Canadian Securities Administrators. The qualified persons
responsible for the mineral resource and mineral reserve estimates,
respectively, are Twila D. Griffith, P.Geo., Chief Mine Geologist,
Andacollo Mine and David J. Libby, P.Eng., Executive Vice-President,
Mining Operations, Aur Resources Inc. The proven and probable mineral
reserves comprise those portions of the measured and indicated
resources, respectively, after allowing for mining dilution, that are
contained within the August 2004 final pit outline which was derived
from the 2004 resource block model and adjusted for the pit topography
at December 31, 2004.

The mineral reserves and resources were estimated using a copper price
of $1.00/lb and variable cut-off grades ranging from 0.25% SCu to 0.38%
SCu and averaging 0.31% SCu. Proven reserves include broken stockpiles
totaling 0.26 million tonnes averaging 0.80% TCu (0.55% SCu) and
measured resources include broken stockpiles totaling 5.6 million tonnes
averaging 0.47% TCu (0.29% SCu) with the remainder being in situ.
Measured resources are defined by a minimum of 22 drill hole composites
and a drill hole spacing of approximately 50 m, indicated resources by
between 3 and 21 drill hole composites and a drill hole spacing from 50
m to 100 m and inferred resources by up to 2 composites and a drill hole
spacing of over 100 m.

Additional low grade mineral reserves totaling 6.9 million tonnes
grading 0.33% TCu (0.27% SCu) in the proven category are being
stockpiled and will be available for leaching at the end of the
projected mine life.

Resources that do not qualify as reserves have not demonstrated economic


Contact Information

    Aur Resources Inc.
    Dr. James W. Gill
    President & Chief Executive Officer
    (416) 362-2614
    Aur Resources Inc.
    Mr. Peter McCarter
    Executive Vice-President, Corporate Affairs
    (416) 362-2614