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Cu 23.25% Ag 365g/t Au 3.47g/t Marcapunte Norte PE

Category: BASE METALS CONCENTRATE 
Product Code: AMIS 0422

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AMIS0422 Cu 23.25% Ag 365g/t Au 3.47g/t Marcapunte Norte Peru

Origin of Material: The concentrate material for AMIS0422 was supplied by Namibia Custom Smelter (Dundee Precious Metals). The AMIS0422 concentrate is originally from the El Brocal - Marcapunta Norte copper mine located in Peru 285 kilometers east of the city of Lima and 10 kilometers south of the city of Cerro de Pasco. El Brocal (Sociedad Minera El Brocal S.A.A.) is a subsidiary of the Buenaventura Mining Company and is engaged in the extraction, concentration and sale of concentrates of polymetallic minerals—mainly zinc, copper, lead and silver.

Mineral and Chemical Composition: Marcapunta Norte is a high sulfidation epithermal polymetalic replacement vein Au-Cu deposit associated with a Miocene diatreme intrusion into Eocene limestone’s and conglomerates. Marcapunta Norte Mine ore comprises gold mineralization in phreatomagmatic breccia’s (vuggy silica) and arsenic copper enargite mineralization in mineralized mantles.

Recommended Concentrations and Limits
(at two Standard Deviations)

Certified Concentrations

Cu Fus 23.82 ± 2.68 %
Cu M/ICP 23.21 ± 0.87 %
Cu Titration 23.08 ± 0.44 %
Au Pb Collection 3.47 ± 0.34 g/t
Ag M/ICP 365 ± 21 g/t
Zn Fus 1.58 ± 0.05 ppm
Specific Gravity 4.32 ± 0.08

Provisional Concentrations

Bi M/ICP 689 ± 143 ppm
Zn M/ICP 1.53 ± 0.19 %

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