Almaden Mineral's Newsroom

 

News Release: April 23rd, 2003

Update of Exploration Activities

Several significant work programs have been completed and additional work programs are planned on Almaden Minerals Ltd.'s (Almaden) projects. Almaden currently has eight active joint venture projects which include a regional exploration program with partner BHP Billiton underway to explore for copper-gold deposits in Mexico.

ATW Diamond Project, NWT, Canada

A till sampling program has been completed on the ATW property. Seventy-seven holes were drilled to recover samples of basal till in order to determine the source of a 20 kilometre long kimberlitic indicator mineral train in glacial till. This train had previously been traced easterly and up ice to within five kilometres from a fence of holes which did not encounter indicator minerals, outlining a source area for the kimberlitic body. This source area was tested by the current drill program. Picking and identification of indicator minerals from the samples is still not complete. The ATW Project is between and roughly equidistant from the Diavik and Snap Lake diamond deposits. The Mackay Lake project is a joint venture of ATW Resources Ltd. (75%), Aberex Minerals Ltd.(15%), and SouthernEra Resources Ltd. (10%). ATW itself is owned by Almaden Minerals Ltd. (40%) Troymin Resources Ltd. (20%), and Williams Creek Explorations Ltd. (40%).

 

Siwash Gold Deposit, Canada

The company completed a sixteen hole, 5,000 m (meter) diamond drill program in September 2002 to test the continuity of mineralisation at the company's wholly owned Siwash Gold Mine in B.C. Calculation of an updated resource estimate incorporating the 2002 drill intersections is underway. The Siwash Mine presently has an indicated resource of 87,700 oz (2,727,400 grams) gold in 61,300 tons and a probable reserve of 45,200 oz (1,405,700 gm) gold in 44,500 tons for a total of 141,962 ounces in 123,142 tons as calculated on completion of the last drill program in 2000.

 

Caballo Blanco, Mexico

The Caballo Blanco project is optioned to Comaplex Minerals Ltd. (Comaplex) who can earn a 60% interest in the project by spending US$2,000,000. Comaplex have completed a large rock sampling and geologic mapping program. This work was complimented by analysis of alteration mineralogy with a PIMA portable infrared spectrometer which has outlined several prominent areas of alteration and mineralisation. Comaplex has informed Almaden that exploration will continue in the month of May and will include a large IP geophysical survey to help define targets for drilling.

 

Galeana, Mexico

The Galeana property is optioned to Grid Capital Corp. (Grid) who can earn a 60% interest by spending US$2,000,000 and issuing 400,000 shares to Almaden. Grid currently has a large field program underway on this high-grade gold-silver vein prospect. The work program has included rock and soil geochemical sampling, geologic mapping and IP geophysical surveys intended to define targets for a diamond drill program. The property covers two major vein systems, the Miguel Ahumada - Estrella de Oro trend and the San Geronimo trend, both of which have had limited historic production. Production took place from 1889 to 1910, and it is estimated from historic reports that up to 100,000 ounces may have been extracted from vein material averaging 0.6 ounces per ton (opt) Au. The mines were closed in 1910, at the time of the Mexican revolution. Several comprehensive evaluations of the deposits were carried out between 1902 and 1923 and are in the possession of Almaden. In these evaluations grades are reported to average 0.84 opt Au over an average of 6 feet at Miguel Ahumada, 0.42 opt over an average of 7 feet at San Geronimo, and 0.9 opt over an average of 4 feet at Estrella de Oro. Both vein systems represent classic banded quartz-adularia-carbonate low sulphidation epithermal veins.

 

El Pulpo, Mexico

The El Pulpo property is located north-east of Mazatlan and covers an area of approximately 100 square kilometres. 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 has been identified 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 informed Almaden that a large sampling and mapping program will start on the project in May, 2003.

 

BHP Billiton Joint Venture, Mexico

An initial helicopter-borne reconnaissance program has been completed over the area of interest in this joint-venture program with BHP Billiton, operated by Almaden and designed to identify copper-gold deposits in Mexico. Several areas of significant mineralisation and alteration for follow-up were noted in this program. Work will commence immediately.

 

San Carlos, Mexico

The San Carlos Project is optioned to Aurcana Corp. (Aurcana), who can earn a 60% interest in the property by spending US$4,000,000 and have issued 300,000 shares to Almaden. Aurcana have recently completed a four hole, 865 metre, diamond drilling program in an area of the property prospective for copper-gold porphyry mineralisation. Aurcana has reported to Almaden that all holes intersected porphyry style alteration and mineralisation, however the grades intersected of copper, molybdenum and gold are low. The data is being reviewed by Aurcana to determine the next phase of work on this porphyry target. Aurcana's work also defined a separate gold target in an area of the property not tested by drilling, defined by high gold in soil. Previous work by Aurcana highlighted elevated gold in soils with values up to 1000 ppb. The recent expanded soil survey outlined a broad geochemical anomaly with values ranging from 100 ppb to 1935 ppb gold, and averaging 372 ppb gold over an area of approximately 300 metres by 1000 metres. This soil anomaly appears to represent a new discovery which covers the contact between intrusive rocks and limestone will be trenched in an attempt to determine its source and to allow for sampling of the bedrock.

 

Yago, Mexico

Ascot Resources Ltd. (Ascot) has informed Almaden that it will not continue with its option to earn a 60% interest in the Yago project. Ascot drilled 1,098.2 meters in six diamond drill holes on the La Sarda-San Juan vein, one of the four parallel veins of the northern portion of the project. Of these holes one was lost before it reached its target depth and in another hole the vein intersection was ground and not recovered. The drillholes that did intersect the La Sarda-San Juan structure indicate that the vein remains open at depth and extends approximately 170 metres northwest of known workings. Intersected widths of the vein ranged from 0.3 to 4.71 metres and grades were from 0.30 to 4.74 g/t Au. The northern half of the project is underlain by a series of four low-sulphidation epithermal veins named the La Sarda-San Juan, La Esperanza, La Magnolia and La Cucaracha. These structures are sub-parallel, southwest-dipping quartz-adularia veins that occur over an area of 1500 by 1200 metres. There has been limited production from each of these veins, but the majority of production has been from the La Sarda-San Juan vein. Drilling by Ascot was limited to the La Sarda-San Juan vein in the northern part of the property and no drilling was carried out in the southern part of the property where significant quartz-adularia veining occurs from which rock samples taken by Almaden and Ascot have returned significant gold and silver assays. Ascot did carry out an IP geophysical survey over the northern part of the property. This survey was particularly effective in delineating these structures as resistivity highs and extended the potential strike length of the La Sarda-San Juan Vein by 260 metres to the northeast. The resistivity high representing the vein extended to the northern boundary of the IP survey area. Subsequent prospecting identified banded chalcedonic quartz veining 550 metres northwest of the La Sarda-San Juan Vein workings. Almaden will review the data collected by Ascot as well as carry out fluid inclusion and petrograhic and alteration mineralogy studies of veins and altered rock intersected in the Ascot drilling to appraise the level tested within the hydrothermal system.

 

Ram Property, Canada

Almaden's 69 RAM claims in the Yukon are optioned to Ross River Minerals Inc. and form part of Ross River's Tay-LP project. Ross River drilled four holes on the RAM claims in 2002 with no significant results, however a hole drilled in 1998 returned 2.2 g/t Au over 5.3 meters. Ross River has informed Almaden that it will carry out a program of work on the RAM claims in the 2003 field season.

ON BEHALF OF THE BOARD OF DIRECTORS

Morgan Poliquin
, Director

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.

 
Almaden Minerals