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Ross River Minerals Inc

Mineralization Expanded on Minitas Prospect at El Pulpo

Vancouver, Canada (ots/PRNewswire)

Ross River Minerals Inc.
(TSX-V: RRM) (the "Company") is pleased to announce that copper
porphyry style mineralization discovered at Minitas (see press
release dated April 25, 2005) has now been extended by geological
mapping, prospecting and Induced Polarization (I.P.) geophysics to
cover a northwest to southeast trending area that is at least 2,500
metres in length by 950 metres width in a northeast by southwest
direction. Within this defined area are zones of varying intensities
of phyllic alteration overprinting potassic alteration
(biotite-potassic feldspar). Peripheral and outside this area are
zones of propylitic alteration overprinting potassic alteration.
Porphyry style mineralization within and peripheral to this area,
extending over a vertical distance of at least 90 metres, is
exhibited by pyrite-chalcopyrite or their leached equivalents
occurring within stockwork and near vertical sheeted quartz veinlets
or as disseminations within the altered intrusive granodiorite. The
mineralization is open at depth. A total of 583 soil geochemical
samples and 287 surface rock samples have been shipped for analyses.
The volume of alteration and scale of mineralization indicates that
there has been significant hydrothermal fluid movement within this
part of the intrusive. Trenching and more systematic rock sampling is
now being carried out within the Minitas area.
Prospecting is also being carried out one kilometre northeast of
Minitas where sheeted and stockwork quartz-molybdenite veining and
disseminated chalcopyrite has been discovered.
The El Pulpo copper-gold porphyry project now extends over a
distance of 7.0 kilometres in a northeast to southwest direction and
5.5 kilometres in a northwest to southeast direction. There are five
centres of copper mineralization - Cerro Colorado (1,900 x 750
metres), La Langosta (1,800 x 1,050 metres), La Cetolla (1,100 x 230
metres), Jocquistes (1,000 x 750 metres) and Minitas (2,500 x 950
metres) occurring peripherally to a core zone with quartz-molybdenite
mineralization which has yet to be fully explored. The La Cetolla and
Jocquistes prospects have not been fully delineated. This geological
setting is typical of many copper porphyry districts occurring
worldwide. The project is being supervised by James R. Reeves M.Sc.,
P.Geo.
To find out more about Ross River Minerals Inc. (TSX-V: RRM) visit
our website at www.rossriverminerals.com.
ROSS RIVER MINERALS INC.
Per: "Marcus Foster"
Marcus N. Foster, President
The TSX Venture Exchange has not reviewed and does not accept
responsibility for the accuracy or the adequacy of this release.

Contact:

Ross River Minerals Inc., No. 1004 - 750 West Pender Street,
Vancouver, BC, V6C 2T7, Telephone: +1-604-682-2770, Facsimile:
+1-604-682-2331

Plus de actualités: Ross River Minerals Inc
Plus de actualités: Ross River Minerals Inc
  • 25.04.2005 – 22:21

    New Porphyry Discovery at El Pulpo

    Vancouver, Canada (ots/PRNewswire) - Ross River Minerals Inc. (TSX-V: RRM) (the "Company") is pleased to report that while investigating a high-grade copper vein occurrence two kilometres southeast of its Cerro Colorado copper-gold porphyry target on Ross River's El Pulpo property, geologists have discovered new porphyry- style copper mineralization occurring in deep arroyos cutting through a potassicaly altered phase of intrusive rock of the Sinaloa batholith. The ...

  • 17.03.2005 – 20:16

    Daniel Munter Appointed Advisor to El Pulpo Porphyry Copper Project

    Vancouver, British Columbia (ots/PRNewswire) - Ross River Minerals Inc. (TSX-V: RRM) (the "Company") is pleased to announce that it has appointed Daniel Munter as advisor to the Company with respect to its El Pulpo porphyry copper project located in Sinaloa State, Mexico. Mr. Munter has over thirty years of experience in the mining industry. Specializing in porphyry copper/gold/molybdenum and associated skarn systems, ...

  • 16.03.2005 – 22:05

    Polo & Los Frayles Concessions Optioned

    Vancouver, British Columbia (ots/PRNewswire) - Ross River Minerals Inc. (TSX-V: RRM) (the "Company") is pleased to announce that its Mexican subsidiary, Minera Rio Ross S.A. de C.V. ("MRR") has signed an option to purchase 100% of the right, title and interest in the Polo and Los Frayles concessions totaling 200 hectares, which are located within the outer boundary of its Mexican El Pulpo project. The total ...