Patriot Gold Announces Initial Metallurgy Results for Moss Mine Project, Arizona
26 Mayo 2009 - 11:55AM
PR Newswire (US)
LAS VEGAS, May 26 /PRNewswire-FirstCall/ -- Patriot Gold Corp. (OTC
Bulletin Board: PGOL) today announced the results of initial
metallurgy conducted on core samples from its Moss Mine Project
located approximately 70 miles southeast of Las Vegas, Nevada. The
program was conducted to test the potential for heap leaching the
gold/silver mineralization at Moss, a less expensive recovery
system than conventional milling. The tests were conducted by
METCON Research of Tucson, Arizona. Prior to conducting a column
leach study, an agitated cyanide leach study (bottle roll) was
conducted on four samples at minus 10 mesh and 150 mesh
(pulverized) crush sizes to compare oxide to sulfide recoveries and
determine reagent consumption. The Moss Mine deposit contains minor
pyrite below a depth of approximately 200 feet. The results of the
96 hour test, shown below, indicate similar extraction percentages
for sulfide and oxide. This indicates that even the deeper,
un-oxidized mineralization at Moss may be leachable. Reagent
consumption was minimal. Moss Mine Project Preliminary Bottle Roll
Cyanide Leach Tests - Oxide and Sulfide Composite Samples
Cumulative Calculated Head Extraction Test No. Sample ID Crush Size
Au (g/t) Ag (g/t) Au (%) Ag (%) BR-01 Oxide 10 mesh 1.24 16.6 63.87
37.37 BR-02 Oxide 150 mesh 1.36 16.4 97.07 79.43 BR-03 Sulfide 10
mesh 0.82 15.8 67.22 56.46 BR-04 Sulfide 150 mesh 0.89 17.6 92.2
83.06 The locked cycle column leach tests were conducted on the
Moss core at 80 percent passing 1 inch, 1/2 inch and 1/4 inch crush
sizes. Three test charges were reconstituted and loaded into 4 inch
diameter PVC columns to a height of approximately 3.5 meters. Prior
to loading the columns, the sample was agglomerated with water and
lime. The columns were leached for 109 days. Gold extraction ranged
from 39 to 66 percent and silver extraction ranged from 14 to 42
percent depending on crush size as shown in the table below.
Reagent consumption was again minimal. MOSS MINE PROJECT - Oxide
Composite Sample Crush Size Locked Cycle Column Leach Study Summary
of Results Calculated Cumulative Head Extraction Extraction (g/t)
(%) (g/t) Sample ID Test No. Crush Size Au Ag Au Ag Au Ag Oxide 1
CL-01 P80 1 inch 1.44 13.68 38.66 14.12 0.56 1.93 CL-02 P80 1/2
inch 1.21 14.75 51.95 24.16 0.63 3.56 CL-03 P80 1/4 inch 1.30 13.54
66.31 42.11 0.86 5.70 Column leach results indicate the Moss
mineralization is leachable. At the end of the 109 day test all
three samples were still contributing gold/silver to the leach
solution. This indicates longer leach times will improve
recoveries. Although not suitable for inclusion in this release, a
graph of gold/silver recoveries will be placed on the company's
website, http://www.patriotgoldcorp.com/. At Round Mountain, Nevada
and several other heap leach operations in Nevada leaching is
conducted for several years on the same leach pile. The success of
this initial metallurgy indicates the Moss Mine deposit may be
minable at a lower cut-off grade thus allowing mining to greater
depth. Patriot plans an additional drilling program to expand the
resource down-dip, a resource calculation and further metallurgy
using longer column leach times. Disclaimer: This announcement may
contain forward-looking statements which involve risks and
uncertainties that include, among others, limited operating
history, limited access to operating capital, factors detailed in
the accuracy of geological and geophysical results including
drilling and assay reports; the ability to close the acquisition of
mineral exploration properties, and other factors which may cause
the actual results, performance or achievements of the company to
be materially different from any future results, performance or
achievements expressed or implied by such forward-looking
statements. More information is included in the company's filings
with the Securities and Exchange Commission, and may be accessed
through the SEC's website at http://www.sec.gov/. Contact: Investor
Relations 1-877-501-GOLD (4653) 1-702-456-9565
http://www.patriotgoldcorp.com/ DATASOURCE: Patriot Gold Corp.
CONTACT: Investor Relations of Patriot Gold Corp., 1-877-501-GOLD
(4653), or +1-702-456-9565 Web Site:
http://www.patriotgoldcorp.com/
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