Rimfire Purchases Cangold's 51% Thorn Interest

Jason Weber, President and CEO of Rimfire Minerals Corporation (TSX VENTURE:RFM)
is pleased to report that Rimfire has purchased Cangold Limited's 51% interest
in the Thorn gold-silver-copper property. Rimfire now has sole ownership of the
170 square kilometre property, subject to 3.5% underlying net smelter royalties.


"Cangold has been a great partner at Thorn, however, their management's
geographic focus has shifted to take advantage of their strengths in Mexico,"
stated Jason Weber, President and CEO. "Our team feels that the geologic
setting, intensity and breadth of alteration and mineralization identified to
date indicate a district-scale high sulphidation gold-silver-copper system. We
have regained full control of the Thorn so we can bring in a new partner to
aggressively explore the project."


The Thorn property covers a large mineralizing system centred on a 60 square
kilometre Late Cretaceous volcanic centre, 130 km south of Atlin, British
Columbia and 50 km north of the past-producing Golden Bear gold mine. To date,
20 precious metal occurrences have been identified on the property, including
quartz-sulphide copper-gold-silver bearing veins, breccia-hosted
silver-lead-zinc-gold mineralization, copper-molybdenum porphyry mineralization
and sedimentary replacement gold-silver-zinc mineralization. Together with the
wholly-owned Kizmet property, Rimfire now controls the key targets in an
underexplored epithermal district with excellent potential for precious metal
discoveries.


Cangold and Rimfire explored the Thorn from 2002 to 2005. Highlights of these
exploration programs include:


- Discovery of high grade gold-silver-copper bearing
quartz-pyrite-enargite-tetrahedrite veins. This style of mineralization is
similar to that mined at Barrick Gold's 6.3 million ounce El Indio gold deposit,
Chile.


- Precious metal-bearing alteration associated with high-sulphidation veins
cover an approximate area of 6000 by 6000 metres as indicated by outcrop
exposure, airborne resistivity data and induced polarization surveys.


- Demonstrated 3700 metres of aggregate strike length in 6 vein corridors, with
high grade mineralization intersected in drilling.


- Just three holes in the Talisker vein corridor, with 500 metres strike length
indicated by geophysical data, yielding intersections of 4.44 g/t gold, 407.9
g/t silver, and 2.95% copper over 4.2 metres (THN05-37) and 4.48 g/t gold, 65.3
g/t silver, and 0.65% copper over 3.6 metres (THN04-29).


- Oban Breccia (breccia-hosted silver-lead-zinc-gold mineralization) averaged
173.0 g/t silver, 1.2 g/t gold, 1.5% lead and 1.5% zinc over 25.2 metres in
drilling. High grade mineralization on surface returned 6149 g/t silver, 3.48
g/t gold, 42.97% lead and 3.45% zinc from massive sulphide boulders.


- Bonanza grade gold (265 g/t gold, 631 g/t silver) from a barite float sample
has not yet been traced to a bedrock source. Highly anomalous stream sediment
samples have yet to be followed up.


- 2000 by 500 metre multi-element soil (talus fines, defined by greater than 50
ppb gold) anomaly remains largely unexplained at the Outlaw zone, a
gold-silver-zinc target.


Management will be seeking a partner to advance the Thorn through further
drilling of drill-ready vein targets and further ground work to prepare early
stage prospects for drilling.


The terms of the purchase of Cangold's interest in the Thorn are $100,000 cash
upon signing of the agreement, and 100,000 shares of Rimfire upon exchange
approval of the sale of the Thorn interest. Should Rimfire subsequently find a
partner to explore the project, Rimfire will pay 25% of any third party cash or
share payments to Cangold. Upon commercial production, Rimfire, at its election,
would issue a further 250,000 shares or pay $1,000,000 cash to Cangold provided
that Rimfire still holds at least a 10% interest in the project.


This news release has been reviewed by Mark Baknes, M.Sc., P.Geo., a Qualified
Person for the purpose of National Instrument 43-101.


About Rimfire

Rimfire Minerals Corporation is an aggressive, well-financed mineral exploration
company with a portfolio of highly prospective gold and copper properties in
western North America and Australia. Current and former partners include
AngloGold Ashanti Limited, Barrick Gold Corporation, Newmont Mining Company,
Inmet Mining Corporation, Northgate Minerals Corporation, Fronteer Development
Group Inc., Rubicon Minerals Corporation, American Creek Resources Ltd., Island
Arc Exploration Corporation and BWG.


On behalf of Rimfire Minerals Corporation

Jason Weber, P.Geo., President & CEO