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Aura Silver to Focus on Emerging Higo Blanco Jasperoid Prospect
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OTTAWA, ONTARIO, Aug 27 (MARKET WIRE) --
Aura Silver Resources Inc. ("Aura Silver") (TSX VENTURE: AUU) is pleased
to report results from its ongoing exploration in the southern Taviche
district, Oaxaca, Mexico. On May 27, 2008, Aura Silver reported that it
had identified a large jasperoid and vein breccia complex in the southern
extent of its East Taviche concession. This discovery led to the
acquisition of the 898 km2 Alma Delia concession located southeast of
East Taviche and covering the extension of this prospective area to the
southeast.
Reconnaissance activities in the East Taviche concession during 2007 and
2008 delineated a corridor of northwest-trending gold and silver-bearing
quartz-sulfide-carbonate veins, vein breccias and stockwork deposits. In
proximity to where these vein systems intersect the underlying Cretaceous
limestone, a zone of extensive silicification includes deposits of
silver-gold-bearing jasperoid. The Higo Blanco prospect is a jasperoid
occurrence that has been mapped and sampled over a strike length of 7.5
kilometers. This mineralized complex of veins and silicified limestone
can be traced northwest into the core of the Taviche district and extends
to the southeast across the Alma Delia concession. Follow-up mapping
(1:1,000) and sampling (468 samples) in 2008 have enabled Aura Silver to
define several drill targets, initially within a small portion
(approximately 2 kilometers) of the overall strike length of the
vein/jasperoid complex.
The initial program consisting of four trenches (243 meters) across the
hanging wall (HW) of one of these vein systems, the Mezcal vein, has
revealed broad zones of silicification hosting vein breccia and quartz
stockwork. Gold values (126 samples) are consistently anomalous along all
of the trenches and contain notable zones such as 30.3 meters of 0.735
g/t Au (Trench 1) and 20.6 meters of 0.91 g/t Au (Trench 4). Silver
values range up to 436 g/t but are generally less (90%) than 50 g/t.
Values greater that 50 g/t are associated with diminished oxidation and
visible sulfides, indicative that silver grades increase with depth (less
oxidation) and toward the underlying (and hidden in this area) jasperoid
horizon (less than 100 meters below the surface).
Mapping in the Higo Blanco prospect (Figure 1:
http://media3.marketwire.com/docs/auramap0827.pdf), along with the trench
results, indicate that gold and silver enrichment are occurring in both
the volcanics and silicified limestone adjacent to the Mezcal vein over a
strike length of at least two kilometers. The stockwork deposits hosted
by the Tertiary volcanics are stratigraphically above and in the HW of
the Cretaceous limestone beds which host the jasperoids. Gold and
silver-bearing quartz stockwork deposits commonly form as stacked, flat
lying bodies up to several meters thick. In addition to quartz,
significant amounts of pyrite, arsenopyrite and stibnite are visible and
are reflected in the geochemical data.
Extensive outcrops of jasperoid immediately northwest of the trenches
have been sampled (8 samples) and average 0.34 g/t Au (up to 0.878 g/t
Au) and 362 g/t Ag (up to 1,780 g/t Ag). The same jasperoid horizon is
present approximately 800 meters to the southeast of the trenches in the
Alma Delia concession (in an outcrop area of 150 by 75 meters) and
averages (15 samples) 0.35 g/t Au and 182 g/t Ag. All samples were
collected within about 10 meters of the hanging wall contact with the
overlying altered and veined volcanics. The thickness of the jasperoid
has not been established.
Along strike, between the two jasperoid masses (approximately 850 meters
apart) noted above, is a large area of altered volcanics associated with
distinct calcite flooding and veining. The spatial association between
this alteration and the gold-silver-arsenic-antimony-bearing quartz
mineralization may indicate continuity at depth (less than 100 meters)
between these two masses. To test this large target, a preliminary
drilling program has been designed. All environmental and community
permits have been obtained.
Robert Boaz, President and CEO, states that "We are excited about the
opportunity to test this 'grassroots' success. The size of this prospect
and indications that silver and gold values are increasing with depth
provide Aura Silver with the unique possibility of a significant
discovery".
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 North America
with a focus on silver. The Company has 38,208,902 common shares
outstanding.
FORWORD LOOKING STATEMENTS
This Press Release may contain forward looking statements that involve a
number of risks and uncertainties. Actual events or results could differ
materially from the Company's expectations and projections. The TSX
Venture Exchange has not approved or disapproved of the information
contained in this press release.
A map is available at the following address:
http://media3.marketwire.com/docs/auramap0827.pdf
Contacts:
Aura Silver
Robert Boaz
President and CEO
905-403-8010
boaz@aurasilver.com
www.aurasilver.com
Copyright 2008, Market Wire, All rights reserved.
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