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Encouraging Results on Rio Cristal's Peru Property

18th Apr 2011 07:00

RNS Number : 0159F
Alexander Mining PLC
18 April 2011
 



Alexander Mining plc

('Alexander' or the 'Company')

Encouraging Preliminary Results from AmmLeach® Amenability Testwork on Rio Cristal's Charlotte Bongará Zinc Oxide Property in Peru

AmmLeach® amenability testwork on one sample provided from a section of high grade drill core from the Charlotte Bongará zinc oxide property, with a head grade of 19.7% zinc, resulted in favourable levels of zinc dissolution

Alexander and Rio Cristal are discussing further AmmLeach® amenability testwork on representative samples from Charlotte Bongará

Alexander (listed: AXM-AIM and AXD-TSXV) is pleased to announce that initial AmmLeach® amenability test work conducted by Alexander's wholly owned subsidiary, MetaLeach Limited ('MetaLeach'), in late 2008 for Rio Cristal Resources Corporation ('Rio Cristal', listed : RCZ-TSXV) on its Charlotte Bongará zinc oxide property ('Charlotte Bongará') in Peru produced encouraging results. Alexander and Rio Cristal are now discussing additional AmmLeach® amenability testwork.

For the sample provided from a section of high grade (19.7% zinc) drill core, favourable levels of zinc dissolution using AmmLeach® were achieved. The acid neutralizing capacity (ANC) of the sample was very high, indicating a high carbonate host environment. The high ANC indicates that acid leaching is unlikely to be economic. The leaches were not optimized and it is probable that improvements in leaching recovery will occur with further test work. 

Based on the high levels of zinc dissolution, using AmmLeach® could be a viable commercial scale process to use for processing at Charlotte Bongará. The additional AmmLeach® amenability testwork being discussed would be on more representative samples and would include:

Optimising leaching parameters;

Measure and optimising reagent consumption;

Particle size effects on recovery; and

Evaluating the various options available to produce a final product and measure the impurities in the leach solution.

Martin Rosser, CEO of Alexander, said:

"We are pleased with these initial results, which support the excellent potential for using our AmmLeach® process to treat high grade zinc oxide deposits."

About Rio Cristal Resources Corporation

 

Rio Cristal Resources is a Canadian corporation focused on the discovery and further development of zinc, copper and gold deposits in Peru. The Company's most advanced exploration project is the 18,000 hectare Bongará zinc claim block located in northern Peru. An initial 4,200m drilling program confirmed that the project is within an important emerging zinc district. In 2011, Rio Cristal began a 6,000m drill campaign in with the objectives of confirming a zinc oxide resource and discovering deeper sulphide zinc ores. Additionally, the Company is exploring methods of treating its zinc oxides so that it may make a production decision quickly and efficiently.

 

About Alexander Mining plc

 

Alexander is a mineral processing technology company focused on the commercialisation of its proprietary mineral processing technology.

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 www.sedar.com. 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.

ENDS

 

For further information please contact: 

Martin Rosser Matt Sutcliffe

Chief Executive Officer Executive Chairman

Mobile: + 44 (0) 7770 865 341 Mobile: +44 (0) 7887 930 758

 

Alexander Mining plc

1st Floor

35 Piccadilly

London

W1J 0DW

Tel: +44 (0) 20 7292 1300

Fax: +44 (0) 20 7292 1313

Email: [email protected]

Website: www.alexandermining.com

 

Nominated Advisor and Joint Broker

Ambrian Partners Limited

Samantha Harrison / Jen Boorer

+44 (0) 20 7634 4700

 

Joint Broker

XCAP Securities plc

John Grant / David Newton

+44 (0) 20 7101 7070

 

Public/Media Relations

Britton Financial PR

Tim Blackstone

+44 (0) 20 7242 9786

 

This information is provided by RNS
The company news service from the London Stock Exchange
 
END
 
 
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