Fronteer Development Group Inc.: Long Canyon Column-Leach Tests Return Gold Recoveries Averaging up to 90.1%
June 11 2009 - 7:00AM
Marketwired
Fronteer Development Group Inc. (TSX: FRG)(NYSE Amex: FRG) is
pleased to announce that column-leach testing of bulk samples from
the Long Canyon project have returned gold recoveries averaging as
high as 90.1%. The metallurgical test data suggests Long Canyon's
oxidized gold mineralization is amenable to low-cost, conventional,
heap-leach processing.
Four bulk samples were submitted to McClelland Laboratories Inc.
in Sparks, Nevada, for column-leach tests at crush sizes of -25 mm
and -75 mm. Column-leach gold recoveries for the -75mm feed size
ranged from 84.2% to 96.6% (89.7% average) in approximately 65 days
of leaching and rinsing. Column-leach gold recoveries for the -25mm
feed size ranged from 85.6% to 96.3% (90.1% average) in
approximately 69 days of leaching and rinsing.
Gold recovery rates for all samples were very rapid and gold
extraction was substantially complete in 10 to 15 days of
leaching.
Reagent consumption levels were also very low and no solution
percolation, fines migration, solution channeling or slumping
problems were encountered during column leaching.
For charts showing cumulative gold recoveries among all four
samples, please click:
http://www.fronteergroup.com/sites/files/fronteer_admin/LongCanyonCumulativeGoldRecoveryCharts.pdf.
The four bulk metallurgical samples, each weighing approximately
1.5 tonnes, were obtained from separate road cuts on the Long
Canyon property. The sample sites all presented a mix of competent
rock and soil-like fines and efforts were taken to get proportional
amounts of the fines and coarse rock. Three of the samples were
Notch Peak limestone, while the fourth was Pogonip limestone.
Further metallurgical testing will be completed as part of Long
Canyon's current $14.1 million work program. Tests will be
conducted over the course of this year's program on composite
material obtained from 17 large-diameter core holes that were
drilled in May on three mineralized cross sections.
Fronteer is majority owner (51%) and operator of Long Canyon
through a joint venture with AuEx Ventures Inc. (49%). Long Canyon
recently reported its first resource estimate (See March 13, 2009
press release). The Long Canyon resource defined to date is
essentially all oxide and characterized by wide intervals of at- or
near-surface, high-grade, gold mineralization and remains open in
all directions, including at depth.
Long Canyon, Sandman and Northumberland are Fronteer's most
advanced gold properties and comprise the Company's future
production platform in Nevada. For more information on Long Canyon
and Fronteer's other Nevada projects, visit:
http://www.fronteergroup.com/?q=content/nevada.
For an animated video showing Long Canyon's current resource,
please click:
http://www.fronteergroup.com/sites/fronteer_admin/FRG_LongCanyon_May0509_CLIP.wmv.
Gary Simmons, a Qualified Professional with the Mining and
Metallurgical Society of America and Fronteer consultant, is the
Qualified Person who has overseen the collection and verification
of the data for this release and has reviewed and approved this
release's content.
About Fronteer
Fronteer is an exploration and development company with a track
record of making big discoveries. Fronteer has an extensive gold
project pipeline in Nevada, a 40% interest in three gold and
copper-gold projects in western Turkey, and 100% ownership of
Aurora Energy Resources, a private subsidiary advancing a
world-class uranium district in Labrador, Canada. For further
information on Fronteer visit www.fronteergroup.com.
Except for the statements of historical fact contained herein,
certain information presented constitutes "forward-looking
statements" within the meaning of the United States Private
Securities Litigation Reform Act of 1995. Such forward-looking
statements, including but not limited to, those with respect to
completion of additional metallurgical testing and timing of final
results of column leach tests involve known and unknown risks,
uncertainties and other factors which may cause the actual results,
performance or achievement of Fronteer to be materially different
from any future results, performance or achievements expressed or
implied by such forward-looking statements. Such factors include,
among others, risks related to the actual results of current
exploration activities, conclusions of economic evaluations, ,
changes in project parameters as plans continue to be refined, as
well as those factors discussed in the section entitled "Risk
Factors" in Fronteer's Annual Information form and Fronteer's
latest Form 40-F on file with the United States Securities and
Exchange Commission in Washington, D.C. Although Fronteer has
attempted to identify important factors that could cause actual
results to differ materially, there may be other factors that cause
results not to be as anticipated, estimated or intended. There can
be no assurance that such statements will prove to be accurate as
actual results and future events could differ materially from those
anticipated in such statements. Fronteer disclaims any intention or
obligation to update or revise any forward-looking statements,
whether as a result of new information, future events or otherwise.
Accordingly, readers should not place undue reliance on
forward-looking statements.
Contacts: Fronteer Development Group Inc. Mark O'Dea, Ph.D,
P.Geo. President and CEO 604-632-4677 or Toll Free 1-877-632-4677
Fronteer Development Group Inc. Richard Moritz Director, Investor
Relations 604-632-4677 or Toll Free 1-877-632-4677 Fronteer
Development Group Inc. Glen Edwards Director, Communications
604-632-4677 or Toll Free 1-877-632-4677 info@fronteergroup.com
www.fronteergroup.com
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