OREAS 405

Reference material OREAS 405 is one of a suite of six CRMs sourced from hematite iron ore samples from the Spinifex Ridge deposit owned by Moly Mines Limited. Areas of enriched iron occur within the banded iron formation of the Gorge Creek Group located approximately 170km east of Port Hedland in Western Australia.

Analyte Certified Value 1SD 95% Confidence Limits Low 95% Confidence Limits High Method
Fe, Iron (wt.%) 58.02 0.297 57.89 58.16 Borate Fusion XRF
SiO2, Silicon dioxide (wt.%) 8.37 0.062 8.35 8.40 Borate Fusion XRF
P, Phosphorus (wt.%) 0.111 0.002 0.110 0.112 Borate Fusion XRF
Al2O3, Aluminium(III) oxide (wt.%) 2.26 0.042 2.24 2.28 Borate Fusion XRF
CaO, Calcium oxide (wt.%) 0.196 0.006 0.194 0.199 Borate Fusion XRF
Cr2O3, Chromium(III) oxide (ppm) 102 13 97 107 Borate Fusion XRF
K2O, Potassium oxide (wt.%) 0.020 0.001 0.019 0.020 Borate Fusion XRF
MnO, Manganese oxide (wt.%) 0.030 0.002 0.029 0.030 Borate Fusion XRF
S, Sulphur (wt.%) 0.018 0.002 0.017 0.019 Borate Fusion XRF
TiO2, Titanium dioxide (wt.%) 0.214 0.007 0.211 0.217 Borate Fusion XRF
LOI1000, Loss On Ignition @1000 °C (wt.%) 5.61 0.095 5.56 5.66 Thermogravimetry
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