Almaden Minerals Ltd.: Rock Samples Return Significant Gold, Copper and Silver from the Willow Gold-Silver Property, Nevada
07 Novembre 2008 - 11:14PM
Marketwired
In Brief
In October 2008 Almaden Minerals Ltd. (TSX: AMM)(NYSE-A: AAU)
("Almaden") initiated a follow-up mapping and rock chip sampling
program on its wholly owned Willow project in Nevada. The 100%
owned Willow project was acquired by staking in 2007. The new work
has confirmed that the Willow Project area represents a preserved
high sulphidation gold system. Rock samples from exposed breccia
zones and veining returned values as high as 0.58 g/t, 289 g/t
silver and 4.9% copper.
In Detail
Past geologic and alteration mapping outlined a roughly 2 by 2
kilometer area of intense hydrothermal alteration characterized by
silicification, brecciation and alunite, kaolinite and dickite
alteration, all features typical of high sulphidation systems. The
October 2008 program focussed on an east-west band through this
area which included an erosional window through a tabular zone of
massive silicification thought to represent the original top of the
high sulphidation system. The general geology of the Willow
Property consists of an underlying "basement" of
argillically-altered rocks of uncertain protoliths that have been
protected from erosion by an overlying resistive and extensive cap
rock of generally massive silica. Above the silica is a thin
sequence of andesitic flows which is overlain by post mineral
volcanic rocks. In addition to massive silicification, cross
cutting vertical silicified hydrothermal breccias have been
identified. These breccias are interpreted to represent the top
portion of the feeder structures to the mineralising system and are
the target for future exploration. Rock chip samples taken during
the course of mapping returned encouraging results.
A total of 45 rock chip, grab and float samples were taken and
returned gold values from below detection up to 0.58 g/t gold. The
highest gold value came from a float sample of silificed breccia
material taken from the northwest end of the property where past
soil samples returned values up to 1 g/t gold (see Almaden news
release of August 28, 2008). Six samples returned gold values above
100 ppb or 0.1 g/t gold. Silver values ranged from below detection
up to 289 g/t silver including three samples over 100 g/t silver.
Significant arsenic, barium, mercury and antimony values were
returned as well, consistent with the interpretation that the
property represents high levels of exposure in a well preserved
system. One grab sample of quartz-veined material located on the
east end, and lowest elevation of the project, returned 0.11 g/t
gold, 162 g/t silver and 4.9% copper. Covellite was identified in
the material sampled, a common mineral in high sulphidation
systems. The presence of this copper mineral is interpreted to be
very encouraging because it suggests that the late brine pulse
necessary to form well mineralised high sulphidation systems
occurred at the Willow project.
Almaden has initiated an IP geophysical survey now underway and
designed to identify high resistivity silica-rich breccias and
feeder zones beneath the area of massive silicification. Results
will be reported upon their receipt.
Morgan J. Poliquin, President and COO of Almaden and a qualified
person under the meaning of National Instrument 43-101 has reviewed
the technical information in this news release. Samples were
analysed at ALS Chemex labs of North Vancouver using industry
standard fire assay, agua regia and ICP methodologies.
On Behalf of the Board of Directors
Morgan J. Poliquin, M.Sc., P.Eng., President, COO and
Director
Almaden Minerals Ltd.
Statements contained in this news release that are not
historical facts are forward looking statements as that term is
defined in the private securities litigation reform act of 1995.
Such forward-looking statements are subject to risks and
uncertainties which could cause actual results to differ materially
from estimated results. Such risks and uncertainties are detailed
in the Company's filing with the Securities and Exchange
Commission.
The Toronto Stock Exchange and NYSE Alternext US have not
reviewed nor accepted responsibility for the adequacy or accuracy
of the contents of this news release which has been prepared by
management.
Contacts: Almaden Minerals Ltd. Morgan J. Poliquin, M.Sc.,
P.Eng. President, COO and Director (604) 689-7644 (604) 689-7645
(FAX) Website: www.almadenminerals.com
Grafico Azioni Almaden Minerals (TSX:AMM)
Storico
Da Giu 2024 a Lug 2024
Grafico Azioni Almaden Minerals (TSX:AMM)
Storico
Da Lug 2023 a Lug 2024