Description
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Origin of Material
The CRM was produced from ore material from the Otjikoto gold deposit located in Namibia. The material has a Gold nugget effect.
Approximate Mineral and Chemical Composition
Quartz-carbonate-sulphide veins dominated by pyrrhotite, magnetite in places. Pyrite occurs as accessory sulphide. Free gold up to +/- 70 %. Host rock is metamorphosed siliceous sedimentary units; albitisation, amphibole-style (granofels) and some carbonatisation. Rocks are primarily albitite and granofels (amphibolitic).
Summary Statistics
Recommended Concentrations and Limits (at two Standard Deviations)
Certified Concentrations
Analyte Method µ 2s ± Unit
Au Pb Collection 0.714 0.15 g/t
Au CL 0.605 0.35 g/t
C Combustion/LECO 1.92 0.026 %
S Combustion/LECO 0.73 0.05 %
LOI LOI 6.08 0.26 %
SG SG 2.73 0.080 Dimensionless
Al 4A_MICP 6.04 0.69 %
Al XRF 6.02 0.10 %
As 4A_MICP 26 5 ppm
Ba 4A_MICP 66 5 ppm
Be 4A_MICP 0.8 0.3 ppm
Ca 4A_MICP 3.81 0.10 %
Ca XRF 3.89 0.051 %
Co 4A_MICP 12 1 ppm
Cu 4A_MICP 34 4 ppm
Fe 4A_MICP 4.11 0.16 %
Fe XRF 4.29 0.078 %
K 4A_MICP 3200 497 ppm
K XRF 3259 88 ppm
Mg 4A_MICP 1.47 0.070 %
Mg XRF 1.63 0.043 %
Mn 4A_MICP 1047 111 ppm
Na 4A_MICP 3.98 0.20 %
Na XRF 3.96 0.22 %
Ni 4A_MICP 37 4 ppm
P 4A_MICP 748 37 ppm
P XRF 732 74 ppm
Sr 4A_MICP 85 3 ppm
Ti 4A_MICP 3467 262 ppm
Ti XRF 4049 121 ppm
V 4A_MICP 111 7 ppm
Zn 4A_MICP 33 3 ppm
Major Oxides
Certified Concentrations (at two Standard Deviations)
Analyte Method µ 2s ± Unit
Al2O3 XRF 11.47 0.35 %
CaO XRF 5.44 0.070 %
Fe2O3 XRF 6.14 0.11 %
K2O XRF 0.39 0.009 %
MgO XRF 2.71 0.064 %
Na2O 4A_MICP 5.37 0.27 %
Na2O XRF 5.35 0.29 %
P2O5 XRF 0.17 0.02 %
TiO2 XRF 0.68 0.02 %
