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      Rimfire Signs Agreement on Boulevard Property
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Vancouver, BC -- July 23, 2009: Rimfire Minerals Corporation
(TSX-V:RFM) is pleased to announce that, together with Northgate
Minerals Corporation (TSX:NGX), it has entered into an agreement
granting Silver Quest Resources Ltd. (TSX-V:SQI) an option to earn a
100% interest (50% from each Rimfire and Northgate) in the Boulevard
Property, located 135 kilometres south of Dawson City, Yukon Territory.
Rimfire and Northgate have been exploring the Boulevard region since
October 2005 under an exploration alliance targeting Intrusion-related
gold deposits.

Under the terms of the agreement Silver Quest can acquire a 100%
interest in the property by making staged cash payments totalling
$200,000 ($40,000 upon regulatory acceptance), the issuance of an
aggregate of 1,000,000 shares (200,000 upon regulatory acceptance) and
work commitments of $3,000,000 ($200,000 the first year) over a five
year period. Rimfire and Northgate retain a 2% net smelter royalty
("NSR") on the property, with Silver Quest having the right to buyback
0.5% of the NSR for $750,000. In addition, should Silver Quest complete
a 43-101 compliant resource estimate on the property in excess of
1,000,000 ounces of gold in an indicated category, they will be
required to make a one-time bonus payment of an additional 1,000,000
shares of its capital stock to Rimfire and Northgate. All cash and
share payments are to be split between Rimfire and Northgate.

Silver Quest will also purchase from Rimfire and Northgate certain data
pertaining to soil, silt and rock sampling completed in areas around or
near the property. If Silver Quest acquires open ground by staking
within defined areas, it will be required to issue additional common
shares, up to a maximum of 500,000, and the additional property, if
any, will be further subject to a NSR in favour of the two partners.
Silver Quest would be entitled to buyback 1% of the NSR for $1,000,000.

Rimfire Minerals Corporation has recently entered into a definitive
agreement with Geoinformatics Exploration to combine the companies to
form Kiska Metals Corporation. The focus of Kiska will be the
advancement of the Whistler copper-gold porphyry project located 150
kilometres northwest of Anchorage, Alaska. In addition to the Whistler
property Kiska will hold an extensive portfolio of highly prospective
exploration projects throughout North America and Australia.
Shareholders will vote on the proposed merger on July 30th, 2009.


About Rimfire

Rimfire Minerals Corporation is an aggressive 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, Jaguar Minerals Limited and BWG.

On behalf of Rimfire Minerals Corporation

"Jason Weber"

Jason Weber, P.Geo., President & CEO

CAUTIONARY STATEMENT:  No stock exchange, securities commission or
other regulatory authority has approved or disapproved the information
contained herein.  This News Release includes certain "forward-looking
statements".  Other than statements of historical fact, all statements
included in this release, including, without limitation, statements
regarding future plans and objectives of Rimfire Minerals Corporation,
are forward-looking statements that involve various risks and
uncertainties.  There can be no assurance that such statements will
prove to be accurate, and actual results and future events could differ
materially from those anticipated in such statements.  Important
factors that could cause actual results to differ materially from
Rimfire's expectations are the risks detailed herein and from time to
time in the filings made by Rimfire Minerals Corporation with
securities regulators.  Those filings can be found on the Internet at
http://www.sedar.com and
http://www.sec.gov/edgar/searchedgar/companysearch.html.

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Copyright (c) 2009 RIMFIRE MINERALS CORPORATION (RFM)  All rights
reserved.  For more information visit our website at
http://www.rimfire.ca/ or send mailto:info@rimfire.ca
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