Description
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AMIS0434 Cu 315ppm Co 54.4ppm Au 8.4ppb Ferralsol DRC
Origin of Material: This standard was made using soil material collected from the Kipushi Mine locality and was supplied by First Quantum Minerals Limited. The Kipushi Mine is in Democratic Republic of the Congo, 28 km east south east of Lubumbashi on the Zambian border.
Mineral and Chemical Composition. This CRM is made from a tropical ferralsol soil. These are the classical deeply weathered red or yellow soils of the humid tropics. They are dominated by low activity clays, mainly kaolinite and sesquioxides. Globally large contiguous areas of Ferralsols are found on old geomorphic surfaces, such as the Congo Basin and the Amazon Shield, on peneplained surfaces that typically comprise mid to end-Tertiary deposits. This particular ferralsol has an elevated metals content, particularly copper, reflecting its origin in a copper rich environment.
Recommended Concentrations and two “Between Laboratory” Standard Deviations
Certified Concentrations
Ag P 0.2 ± 0.02 ppm
Co M/ICP 54.4 ± 5.6 ppm
Co P 42.7 ± 2.6 ppm
Cu M/ICP 315 ± 16 ppm
Cu P 254 ± 19 ppm
Ni M/ICP 74 ± 6 ppm
Pb P 23.7 ± 2.6 ppm
Pt Pb Collection 2.0 ± 0.1 ppb
Zn M/ICP 251 ± 16 ppm
Zn P 231 ± 19 ppm
Specific Gravity 2.66 ± 0.16 %
Provisional Concentrations
Ag M/ICP 0.25 ± 0.06 ppm
As M/ICP 18.4 ± 3.3 ppm
As P 14.7 ± 1.9 ppm
Au Pb Collection 8.4 ± 2.3 ppb
Ni P 37 ± 4.7 ppm
Pb M/ICP 25.0 ± 3.9 ppm
Informational Means
Au P 6.2 ppb
Pd Pb Collection 2.3 ppb
