News Release: December 18th, 2003
Progress Report on
the El Pulpo Project, Mexico
The El Pulpo property is located north-east
of Mazatlan and covers an area of approximately 200 square kilometres.
Almaden Minerals Ltd. (Almaden) has optioned this property to
Ross River Minerals Ltd. (Ross River) who can earn a 60% interest
by spending US$3,000,000 and issuing 425,000 shares to Almaden.
Almaden and Ross River have identified high grade porphyry related
gold, silver and copper mineralisation over a surface area in
excess of 12 square kilometres. The property hosts at least two
copper-gold porphyry targets and three high grade gold vein targets.
Ross River has provided the company with the following results
in the form of a news release, an excerpt from which follows:
"Continued geological mapping and sampling
of the La Langosta target have outlined a zone of potassic and
phyllic alteration covering an area approximately 2.0 kilometres
long by 1.5 kilometres wide. A larger propylitic alteration zone
occurs outside the phyllic alteration envelope. The potassic
core is characterized by secondary biotite and potassic feldspar
veining. Outside this zone occurs a quartz-sericite-pyrite alteration
(phyllic) envelope and then an outer propylitic altered zone
characterized by pervasive chlorite, disseminated pyrite and
calcite veinlets. The limits of the propylitic alteration have
yet to be defined. These alteration zones remain open to the
southwest.
From observations of limited outcrop, copper (chalcopyrite and
copper oxides) and minor molybdenite mineralization appears to
be concentrated within an area of approximately 1,500 metres
by 750 metres. The earlier identified El Bagre target lies within
the La Langosta porphyry system, within the potassic altered
envelope and is characterized by chalcopyrite, copper oxide and
minor molybdenite mineralization as veinlets and disseminations.
Ross River is still defining the structural controls within this
porphyry system. However, the topographic relief, from Rio Frailes
to the ridges 750 metres southeast, exposes the mineralized system
vertically over 200 metres. This extends from a potassic zone,
with chalcopyrite mineralization, near Rio Frailes, in the north,
to a topographically higher phyllic altered zone containing secondary
iron and copper oxides to the southeast.
Preliminary analyses have been received for 24 samples, taken
from the initial discovery area of 100 metres by 75 metres, include
copper sulphides, mixed copper sulphides and oxides and leached
oxide cap. The three sulphide samples have copper grades ranging
from 0.79 per cent to 1.02 per cent copper, 89 parts per billion
(ppb) to 3,063 ppb gold and 35,434 ppb to 72,717 ppb silver (Note:
1,000 ppb is equivalent to 1.0 g/t). There are nine samples of
mixed sulphides and oxides of copper ranging from 0.35 per cent
to 1.06 per cent copper. Silver values range from 3,658 ppb to
37,387 ppb silver, and gold values range from 37 ppb to 324 ppb
gold. Twelve samples from the leached oxide cap, as would be
expected, have lower copper values ranging from 91 ppm to 2,121
ppm copper, gold values ranging from 12 ppb to 1,038 ppb gold,
and silver values ranging from 210 ppb to over the upper detection
limit of 99,999 ppb silver. The company is awaiting additional
follow-up assays and is very pleased by these preliminary results
outlining a large porphyry target area with significant copper,
silver and gold values. To date a total of 54 rock samples has
been taken at La Langosta. Victor Jaramillo, P.Geo, is the qualified
person supervising work in this area."
Ross River has informed Almaden that Acme
Analytical Laboratories Ltd. in Vancouver carried out the analyses
reported.
Almaden believes these results to be very
encouraging and are representative of a large gold bearing intrusive
hosted vein system. Almaden currently has ten active joint ventures
covering 12 properties, including seven properties in which partners
are spending to earn an interest in the project and a regional
exploration program with partner BHP Billiton underway to explore
for copper-gold deposits in Mexico.
ON BEHALF OF THE BOARD
OF DIRECTORS
Duane Poliquin
The Toronto Stock Exchange
has not reviewed nor accepted responsibility for the adequacy
or accuracy of the contents of this news release which has been
prepared by management. 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.
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