Macarthur Minerals Limited Announces Final Approval for Graduation to TSX

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

VANCOUVER, BRITISH COLUMBIA -- (Marketwire - Oct. 13, 2011) - Macarthur Minerals Limited (TSX VENTURE: MMS) (OTCQX: MMSDF) (the "Company") is pleased to announce that its common shares will be listed and commence trading on the Toronto Stock Exchange ("TSX") at the opening of the market on Friday, October 14, 2011. The Company's current trading symbol, "MMS", will remain unchanged. On commencement of TSX trading, the Company's shares will be delisted from the TSX Venture Exchange.

The Company's CEO, Alan Phillips, commented: "Graduating to the TSX represents a significant corporate accomplishment and milestone for the Company as it moves forward into its development stage. The listing of our shares on the TSX will enable us to reach a larger market of institutional investors, create greater liquidity and access to capital. The TSX is the premier stock exchange in the world for mining companies and a main-board listing will give Macarthur increased market recognition by increasing our visibility with investors everywhere."

In connection with the TSX graduation, the Company also announces that the Company has obtained new ISIN and CUSIP numbers as set forth below:
ISIN: AU 000000MFE9
CUSIP: Q56767108

The common shares of the Company will commence trading with the new ISIN and CUSIP numbers upon TSX listing (Friday, October 14, 2011). In the meantime, the common shares will continue to trade under the current Canadian CUSIP, being 55421R105.


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

Macarthur Minerals Limited is an Australian based resource development company (listed on the TSX-V and OTCQX) focused on developing its potential iron ore project, located in the Yilgarn region of Western Australia. A standard gauge railway is in place to the Port of Esperance. The Company has entered into a Multi User Facility Access Deed with the Esperance Port Authority under which it has secured commitment to a 2 million tonnes per annum allocation, as part of the proposed expansion of iron ore export facilities at the Port of Esperance in Western Australia. The Company has completed a positive scoping study on the magnetite and a prefeasibility study for the hematite is well advanced.


On behalf of the Board of Directors,

MACARTHUR MINERALS LIMITED

Alan Phillips
President, Chairman & CEO



Caution Regarding Forward Looking Statements

Certain of the statements made and information contained in this press release may constitute forward-looking information and forward-looking statements (collectively, "forward-looking statements") within the meaning of applicable securities laws. The forward-looking statements in this press release reflect the current expectations, assumptions or beliefs of the Company based upon information currently available to the Company. With respect to forward-looking statements contained in this press release, assumptions have been made regarding, among other things, the reliability of information prepared and/or published by third parties that are referenced in this press release or was otherwise relied upon by the Company in preparing this press release. Although the Company believes the expectations expressed in such forward-looking statements are based on reasonable assumptions, such statements are not guarantees of future performance and no assurance can be given that these expectations will prove to be correct as actual results or developments may differ materially from those projected in the forward-looking statements. Factors that could cause actual results to differ materially from those in forward-looking statements include unforeseen technology changes that results in a reduction in iron or magnetite demand or substitution by other metals or materials, the discovery of new large low cost deposits of iron magnetite and the general level of global economic activity. Readers are cautioned not to place undue reliance on forward-looking statements due to the inherent uncertainty thereof. Such statements relate to future events and expectations and, as such, involve known and unknown risks and uncertainties. The forward-looking statements contained in this press release are made as of the date of this press release and except as may otherwise be required pursuant to applicable laws, the Company does not assume any obligation to update or revise these forward-looking statements, whether as a result of new information, future events or otherwise.

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 of 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
aphillips@macarthurminerals.com
www.macarthurminerals.com