Macarthur Minerals Appoints New Transfer Agent

THIS NEWS RELEASE IS NOT FOR DISTRIBUTION TO UNITED STATES SERVICES OR FOR DISSEMINATION IN THE UNITED STATES

VANCOUVER, BRITISH COLUMBIA -- (Marketwire - June 24, 2011) - Macarthur Minerals Limited (TSX VENTURE: MMS) (OTCQX: MMSDF) ("the Company") is pleased to announce that effective June 13, 2011 the Company has changed its transfer agent from CIBC Mellon Trust Company to Computershare Investor Services Inc. ("Computershare").

With offices in Australia, England, Ireland, Scotland, Germany, South Africa and the United States, over the past five years Computershare has become a global market leader in transfer agency and share registration, employee equity plans, proxy solicitation and stakeholder communications. Computershare also specializes in corporate trust services, tax voucher solutions, bankruptcy administration and a range of other diversified financial and governance services.

As a growing Company with an expanding shareholder base, the Company looks forward to the range of outstanding services that Computershare will be able to provide.

From this date forward, all inquiries and correspondence relating to shareholder records, transfer of shares, lost certificates, or change of address should be directed to your local Computershare representative:


Computershare Canada:

3rd Floor, 510 Burrard Street
Vancouver, British Columbia
Canada, V6C 3B9

Relationship Manager, Client Services: Al Leomo
Email: al.leomo@computershare.com
Telephone: 604-661-9452
Facsimile: 604-661-9401
Internet: www.computershare.com

Computershare Australia:
GPO Box 2975
Melbourne
Victoria, 3001
Australia

Investor Enquiries: 1300 552 270
Facsimile: +61 3 9473 2555
Internet: www.investorcentre.com/contact


Further information on Macarthur Minerals Limited and technical reports on the Lake Giles project can be found on the company's website www.macarthurminerals.com or www.sedar.com.


ABOUT MACARTHUR MINERALS LIMITED (TSX VENTURE:MMS) (QTCQX:MMSDF)

Macarthur Minerals Limited, is a Perth, Australia based resource development company that is currently focused on developing its Lake Giles iron ore projects, located in the Yilgarn iron ore district in Western Australia. The Lake Giles projects are located 110Km from rail with direct ac- cess to the Port of Esperance, Western Australia. The projects have an aggregate inferred re- source of 1.3 billion tonnes of magnetite mineralization and 18 million tonnes of potential Direct Shipping Ore (DSO) Goethite/Hematite at 55.5% Fe, that has been reported in accordance with National Instrument 43-101 as filed in previous technical reports on January 9, 2011, December 17, 2009 and March 24, 2011.


On behalf of the Board of Directors,

MACARTHUR MINERALS LIMITED

Alan Phillips
President, Chairman & CEO



Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy or this release.



Contact Information

The Buick Group
Jonathan Buick
Corporate Relations
416-915-0915
jbuick@buickgroup.com

Macarthur Minerals Limited - Australia
Alan Phillips
+61 418 726 230
strategiccapital@bigpond.com
www.macarthurminerals.com