Aura Silver Extends Silver Zone to Over 300 Meters - Encounters Significant Gold Values in Limestone
June 16 2010 - 7:30AM
Marketwired Canada
Aura Silver Resources Inc. (TSX VENTURE:AUU) ("Aura Silver" or the "Company") is
pleased to provide results from its ongoing silver and gold exploration at its
Higo Blanco project located in the Taviche district, Oaxaca, Mexico. New results
include hole HBET-23 with 238.7 grams per tonne (g/t) silver equivalent over
19.3 meters which extends the overall length established for the Higo Blanco
silver trend by about 50 meters. A newly discovered gold zone in Hole HBET-24
includes 2.05 g/t gold (Au) over 8.35 meters (including 4.9 g/t over 2.25
meters).
Drilling to date comprises 27 holes in total (assays are pending for holes
HBET-25, -26 and -27) and has been conducted over several square kilometers
defined by silver-antimony bearing 'jasperoid' in Cretaceous limestone and
gold-arsenic bearing quartz-sulfide stockwork and hydrothermal breccias in
altered Tertiary volcanics. The majority of the drilling has been focused along
the northwest-trending Higo Blanco corridor over a strike length of about 1,800
meters. Within this strike length, a concealed silicified breccia near the
intersection of the Mezcal structure and the Cretaceous limestone/volcanic
interface has been tested in several holes over a strike length of about 1,100
meters. In brief, an elongate, southeast plunging hydrothermal breccia with up
to a couple percent of pyrargyrite (silver-antimony sulphide) has been partially
defined. Additional drilling will be required to define limits to the northwest,
southeast and down-dip.
Assays for hole HBET-23, located about 50 meters southeast from the intercept in
hole HBET-16 (26.8 meters at 365.6 g/t silver) which was a 45 meter step out
from discovery hole HBET-03 (34.20 meters at 269.7 g/t), intersected 238.7 g/t
silver equivalent over 19.3 meters in pyrargyrite-bearing hydrothermal breccias
developed in silicified limestone. This is the same environment identified in
the other significant intercepts including HBET-02, -03, -11, -16 and -22.
Currently, the silver-bearing breccias have been identified over a strike length
of about 300 meters.
Both the gold and silver mineralizing events reflect a robust hydrothermal
system. Current exploration is attempting to follow distinct mineralization
styles to depth via down-dip step-outs along the Mezcal structure. The
ubiquitous presence of hydrothermal breccias, possible phreatic breccias and
andesitic dikes along the structure are proving to be useful guides to both
silver and gold mineralization.
About 700 meters along strike and to the northwest, hole HBET-24 was drilled to
test the intersection of the Mezcal structure and limestone at depth and below
previous drilling (i.e. HBET-15), where both favorable alteration and
mineralization were identified (see Press Release #10-01, dated January 18,
2010). Although the hole was lost (at 217 meters) prior to achieving its target
depth of 250 meters, the limestone was encountered and contained numerous,
narrow andesite dikes. Several silicified zones at the dike-carbonate contacts
were identified and contained anomalous gold values (e.g. from 148.65 to 157.0
meters, 8.35 meters with 2.05 g/t Au, including a higher grade intercept of 4.9
g/t Au over 2.25 meters). This is considered to be significant for several
reasons: First, gold mineralization (greater than 0.5 g/t Au) has been
identified in both broad surface exposures and in drilling over approximately
1,000 meters of strike along the Mezcal structure, but this new zone is
significantly more gold-rich, possibly indicating that the gold zone is
expanding with depth. Secondly, the gold (arsenic) event is spatially associated
with the silver (antimony) event and is developed along the same structural
corridor. And thirdly, the andesite dikes are likely tapping deep-seated,
metal-bearing fluids which have migrated up along the same faults that
controlled the dyke emplacement. The ubiquitous presence of arsenopyrite and
stibnite support a high structural position in the epithermal system. Deeper
drilling is clearly warranted in this area.
Additionally, three holes were drilled at the Rosario prospect, located several
kilometers north of Higo Blanco to test the geologic structure beneath the old
Rosario mine. These holes did not encounter significant vein mineralization. The
Rosario vein is one of many silver and gold-bearing veins identified by Aura
Silver in the eastern part of the Taviche district. A trenching program is
currently underway in order to better define these structures.
"We remain confident that our drilling program will continue to expand the
high-grade silver resource along the Mezcal structure laterally and to depth
where we hope to see an increase in gold values", said CEO Robert Boaz.
Dr. James M. Franklin, P. Geo. is Aura Silver's qualified person (as defined by
National Instrument 43-101) and has reviewed and approved the scientific and
technical information in this press release.
About Aura Silver
Aura Silver is a TSX Venture listed company engaged in the acquisition,
exploration and development of precious metal prospects in Canada (100% owned
Greyhound project) and in Oaxaca, Mexico. Aura Silver has 59,102,402 common
shares outstanding.
FORWARD-LOOKING STATEMENTS
This press release may contain forward looking statements that are made as of
the date hereof and are based on current expectations, forecasts and assumptions
which involve risks and uncertainties associated with our business including the
uncertainty as to whether further exploration will result in the target(s) being
delineated as a mineral resource, capital expenditures, operating costs, mineral
resources, recovery rates, grades and prices, estimated goals, expansion and
growth of the business and operations, the private placement financing
activities of the Company, plans and references to the Company's future
successes with its business and the economic environment in which the business
operates. All such statements are made pursuant to the 'safe harbour' provisions
of, and are intended to be forward-looking statements under, applicable Canadian
securities legislation. Any statements contained herein that are statements of
historical facts may be deemed to be forward-looking statements. By their
nature, forward-looking statements require us to make assumptions and are
subject to inherent risks and uncertainties. We caution readers of this news
release not to place undue reliance on our forward-looking statements as a
number of factors could cause actual results or conditions to differ materially
from current expectations. Please refer to the risks set forth in the Company's
most recent annual MD&A and the Company's continuous disclosure documents that
can be found on SEDAR at www.sedar.com. Aura Silver does not intend, and
disclaims any obligation, except as required by law, to update or revise any
forward-looking statements whether as a result of new information, future events
or otherwise.
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.
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