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Geology and Metallurgy

  • Pirquitas 43-101 Report


    (Espanol)

  • Project Animation


    (15MB Quicktime)

    (3MB Windows Media)

  • Pirquitas Process Facility Animation


    (13MB Windows Media)

The property is underlain by sediments comprised of shales, sandstones and greywackes, with minor areas of conglomerate. In the vicinity of the mineralization, the host sediments are folded into an east-plunging, gently-folded anticline. The main mineralized veins run perpendicular to the hinge of the anticline and infill tension joints related to brittle deformation. The silver occurs as silver sulfides and sulfosalts. Potential for expansion of known mineralization is considered excellent. Extensive metallurgical testwork has been carried out at Pirquitas establishing recoveries of 76% for silver, 57% for tin and 48% for zinc. Silver Standard has been undertaking additional metallurgical testwork to either improve these recoveries or to realize operating efficiencies.