MAX Announces Positive Metallurgical Results from Majuba Hill, Nevada, with Leach Recoveries of 84.6% for Copper and 73.4% for Silver
OTC BB: MXROF
VANCOUVER, March 4, 2013 /PRNewswire/ – MAX Resource Corp. (TSXV: MXR); (OTCBB: MXROF); (Frankfurt: M1D) has received the preliminary report by John Fox, P.Eng., Consulting
Metallurgical Engineer of Laurion Consulting Inc. on the test work
carried out on samples from it’s wholly-owned Majuba Hill copper/silver
project in Nevada by Inspectorate Exploration & Mining Services in
A total of fourteen samples of assay sample reject material (crushed to
6 mesh) were received at Inspectorate and these were made into a single
composite weighing 58 kg. A sub sample was taken for head analysis
and indicated a grade of 0.62% Cu and 34.6 g/t Ag.
A series of bottle roll acid tests were carried out with sulphuric acid
at pH 1.3 on material running 6 mesh and on material ground to 200
mesh. After 14 days of leaching the copper extraction was 81.1% and 84.6%
respectively. These results indicate the potential for heap leaching copper in a
relatively short leach cycle, with acid consumption modest at 25kg/t,
which is in line with expectations.
Leach testing was also conducted with thiosulphate over a six hour
period and 24 hour period. Leaching was carried out at pH8 on the two
samples, 6 mesh (un-ground) and 200 mesh. Silver extraction of 73.4% was achieved on ground material, which was 30% higher than on un-ground material.
Thiosulphate leaching is normally very rapid; the difference between
ground and un-ground leach recoveries may disappear over a longer leach
cycle. Moreover, the silver leach value has not been optimized and it
is expected that silver recovery may increase with longer leach times.
While cyanide leaching of sulfuric acid leach residue was also
undertaken and gave about a 70% recovery, the thiosulphate leach route
may be preferred because of reduced reagent costs (less lime required
to neutralize acid to pH8 rather than pH10, and less consumption of
lixivient as thiosulphate is not consumed leaching excess copper) as
well as for environmental considerations.
Clancy Wendt, VP Exploration of MAX, states: “We are extremely pleased
by these preliminary results, which demonstrate the feasibility of
utilizing low-cost heap leach mineral extraction technology at Majuba
Hill. Test work is still ongoing with respect to longer term
thiosulphate leaching, with a number of processing methods also being
examined and tested, with a view to determining the optimum recovery
system for Majuba Hill.”
Drilling by MAX in 2011 and 2012 intercepted high-grade copper/silver
supergene oxide mineralization over long intervals starting at surface,
confirming that Majuba Hill is highly prospective for the development
of a bulk-tonnage, open-pit deposit. Permitting is underway for a
development drill program at Majuba Hill designed to define an initial NI 43-101 compliant
inferred resource estimate by the end of 2013.
Majuba Hill is the site of numerous past producing mines, with historic
production reported of 12% copper (Mason Valley Copper, 1918) and
silver grades up to 40 oz/t Ag. The Majuba Hill project encompasses
3,128 acres of surface and mineral rights that includes patented lode
mining claims. The property is easily accessed via 23 miles of
well-maintained dirt roads leading from U.S. Interstate 80, and lies 30
miles northwest of Coeur d’Alene’s Rochester silver mine, which
contains a NI 43-101 compliant Measured and Indicated Resource of 263.9
million tons grading 0.46 oz/ton Ag and 0.004 oz/ton Au. (The Coeur
Technical Report on the Rochester Mine is available on SEDAR). For more
detailed information on the Majuba Hill project, please visit our web
site at www.maxresource.com.
This news release has been reviewed by Mr. Clancy J. Wendt, P. Geo, a
“qualified person” as that term is defined under National Instrument
43-101. The historic information provided has not been verified by MAX
and is for reference only.
About MAX Resource Corp.
MAX Resource Corp. is a Canadian exploration company focused on gold,
silver and copper exploration in Nevada. Our other Nevada properties
include East Manhattan Wash (Gold) in the Manhattan Mining District,
Nye County and Diamond Peak (Gold/Silver/Zinc) at the south end of the
Carlin Trend in Eureka County.
On behalf of the Board of Directors of
MAX Resource Corp.
Neither the 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.
This News Release includes certain “forward looking statements”. Without
limitation, statements regarding potential mineralization and
resources, exploration results, and future plans and objectives of the
Company are forward looking statements that involve various degrees of
risk. The following are important factors that could cause MAX’s actual
results to differ materially from those expressed or implied by such
forward looking statements: changes in the world wide price of mineral
commodities, general market conditions, risks inherent in mineral
exploration, risks associated with development, construction and mining
operations, the uncertainty of future profitability and the uncertainty
of access to additional capital.
SOURCE MAX Resource Corp.