High Desert Gold Reports on Metallurgical Tests from the Gold Springs Project: Average Gold Extraction from Grey Eagle is 79%...
September 09 2013 - 8:30AM
Marketwired
High Desert Gold Corporation (TSX
VENTURE:HDG)(OTCQX:HDGCF)(FRANKFURT:7HD) ("HDG" or the "Company")
announces the results from a series of metallurgical tests designed
to assess gold and silver extraction from coarse grained material
by bottle roll testing using cyanidation. These tests were
conducted on 7 samples collected from the RC (reverse circulation)
chips from the 2012 drill program at the Grey Eagle and Jumbo
targets at Gold Springs in Nevada and Utah. Tests were carried out
on RC chips rather than pulverized material as had been used in
previous metallurgical tests. (See PR10-17, October 18, 2010, and
PR13-01, January 28, 2013)
Five kg samples were subjected to bottle roll agitation for one
minute every hour for 40 days. Six samples gave consistent results
and are reported here. The average gold extraction in the Grey
Eagle target (Nevada) was 78.8% (range: 74%-83%) for fine to medium
grained material (P80 0.07 to 0.24 inches) and 88.5% (range:
88%-89%) for Jumbo (Utah) (P80 0.03 to 0.14 inches). Gold grades
for test samples ranged between 0.15 g/t and 5.3 g/t.
Silver extractions for the same samples were much more variable
and lower as was expected from previous work. There is a
significant difference in silver extraction between Grey Eagle and
Jumbo with much higher extractions coming from Jumbo. The average
silver extraction from Grey Eagle was 19% and from Jumbo was 53.5%.
Further testing will be needed to determine why these are
different. Tests on these same samples using pulverized material
(P80 of 0.075mm) gave extractions in the range of 10%-60% for Grey
Eagle and 71%-99% for Jumbo.
Samples in this latest test series came from the same drill
holes, GE-12-001, GE-12-002, J-12-004 and J-12-005, as used in the
prior tests. (See PR13-01, January 28, 2013).
Ralph Fitch, President and CEO, stated that "The excellent gold
extractions on this coarser material suggest that the gold
mineralization will likely be heap leachable. This is a very
positive step forward for the project. Also noteworthy is that
50-60% of the gold was extracted within the first 48 hours of the
test with the remaining gold recovered over the balance of the 40
day test period. As we move forward studies will include trade-off
studies between heap-leach scenarios using coarse material and
slightly lower gold extractions and vat-leach scenarios using fine
grained material and high metal recoveries."
Gold Springs is 100%-owned by High Desert Gold Corporation.
The Qualified Person on the Gold Springs property is Randall
Moore, Executive Vice President of Exploration of High Desert Gold
Corporation and he has reviewed and approved the content of this
press release.
All technical information in this news release is obtained and
reported under a quality assurance and quality control program. All
samples were collected under the supervision of Company geologists
and transported directly to Kappes, Cassiday & Associates
("KCA") in Reno, Nevada by Company personnel. The metallurgical
tests and assays were performed in Reno, Nevada by KCA. Gold
content was determined using standard fire assay methods with flame
atomic absorption spectrophotometric FAAS finish. Silver content
was determined using wet chemistry methods (4-acid digestion) with
FAAS finish.
ABOUT HIGH DESERT GOLD
The Company is a mineral exploration company that acquires and
explores mineral properties, primarily gold, copper and silver, in
North America. The principal property held by HDG is a 100%
interest in the Gold Springs gold project situated along the border
between Utah and Nevada. The Company also holds direct interests in
a number of other properties including the San Antonio project in
Sonora, Mexico, the Gold Lake property in New Mexico, and the
Kinkaid and Pinyon properties in Nevada. The Company also has a
26.8% interest in Highvista Gold Inc. which owns 100% of the
Canasta Dorada property in Sonora, Mexico.
Certain statements contained herein constitute "forward-looking
statements". Forward-looking statements look into the future and
provide an opinion as to the effect of certain events and trends on
the business. Forward-looking statements may include words such as
"designed", "further", "suggest", "likely", "will", "recoverable",
and similar expressions. These statements include, but are not
limited to, statements regarding the continued advancement of the
Gold Springs property. In addition, information concerning the
interpretation of drilling and metallurgical testing results may be
considered forward-looking statements, as such information
constitutes a prediction of what mineralization might be found to
be present and recoverable if and when a mining project is actually
developed. These forward- looking statements are based on current
expectations and entail various risks and uncertainties. Actual
results may materially differ from expectations, if known and
unknown risks or uncertainties affect our business, or if our
estimates or assumptions prove inaccurate. Factors that could cause
results or events to differ materially from current expectations
expressed or implied by the forward-looking statements, include,
but are not limited to: the ability to reproduce the recoveries
obtained by Kappes, Cassiday & Associates in their lab testing
on an industrial or commercial scale; the availability of
sufficient financing to fund planned or further required work in a
timely manner and on acceptable terms; changes in project
parameters as plans continue to be refined and other risks more
fully described in the Company's Management Discussion &
Analysis of Financial Position and Results of Operations, which is
available on SEDAR at www.sedar.com. The material assumptions that
were applied in developing the forward-looking statements include:
the effectiveness of the Company's quality control/quality
assurance programs; the availability of equipment and qualified
personnel, and the timely receipt of permits, to advance the Gold
Springs project; and the execution of the Company's existing plans
and further exploration and development programs for Gold Springs,
which may change due to changes in the views of the Company or if
new information arises which makes it prudent to change such plans
or programs. Readers are cautioned not to place undue reliance on
the forward-looking statements contained in this press release.
Except as required by law, HDG assumes no obligation to update or
revise any forward-looking statement, whether as a result of new
information, future events or any other reason. Unless otherwise
indicated, forward-looking statements in this release describe the
Company's expectations as of September 9, 2013.
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.
Contacts: Richard Doran Executive Vice President (303) 584-0606
(303) 758-2063 (FAX)rdoran@hdggold.com