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Alexander Mining PLC  -  AXM   

Patent Granted in Australia

Released 07:00 30-Nov-2012

RNS Number : 3796S
Alexander Mining PLC
30 November 2012

30 November 2012

Alexander Mining plc

('Alexander' or the 'Company')

Patent Granted in Australia for a Method of Leaching of Copper and Molybdenum

Alexander is pleased to report that it has received notification that its MetaLeach Limited ("MetaLeach") subsidiary has been granted a patent for a Method of Leaching of Copper and Molybdenum in Australia, patent number 2011293105.  This patent forms part of MetaLeach's family of core AmmLeach® technologies and has a standard term of twenty years from the effective date of 29 August 2011 (being the date of original filing).

The patent describes a method for leaching copper and molybdenum from an ore, residue and/or concentrate containing such, in which more than 1% of the total molybdenum is present as a sulfide and in which more than 1% of the total copper is present as an oxide, the method comprising the steps of: Exposing the ore, residue and/or concentrate to an aqueous solution of chlorine (I)-based oxidising species of a pH of at least 3.0; Allowing and/or facilitating the oxidation of the molybdenum by the chlorine-based oxidising species thereby providing a treated ore, residue and/or concentrate and a reduced aqueous solution of chlorine-based oxidising species; and Leaching the treated ore, residue and/or concentrate by exposing the treated ore, residue and/or concentrate to an aqueous ammoniacal ammonium carbonate solution to form a pregnant leach solution containing both copper and molybdenum; Passing the pregnant leach solution containing both copper and molybdenum to a means for metal recovery.

Forward Looking Statements

This news release may contain forward looking statements, being statements which are not historical facts, including, without limitation, statements regarding potential mineralization, exploration results, resource or reserve estimates, anticipated production or results, sales, revenues, costs, "best-efforts" financings or discussions of future plans and objectives. There can be no assurance that such statements will prove accurate. Such statements are necessarily based upon a number of estimates and assumptions that are subject to numerous risks and uncertainties that could cause actual results and future events to differ materially from those anticipated or projected. Important factors that could cause actual results to differ materially from the Company's expectations are in Company documents filed from time to time with the TSX Venture Exchange and provincial securities regulators, most of which are available at The Company disclaims any intention or obligation to revise or update such statements unless required by law.

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.



For further information please contact:


Martin Rosser

Chief Executive

Mobile: +44 (0) 7770 865 341

Matt Sutcliffe

Executive Chairman

Mobile: +44 (0) 7887 930 758

Alexander Mining plc

1st Floor

35 Piccadilly



Tel: +44 (0) 20 7292 1300

Fax: +44 (0) 20 7292 1313



Nominated Adviser and Broker

Northland Capital Partners Limited

Louis Castro / Lauren Kettle

+44 (0) 20 7796 8800

Public / Media Relations

Britton Financial PR

Tim Blackstone

+44 (0) 20 7242 9786



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Patent Granted in Australia - RNS