OREAS WON25

WON25 was prepared from phosphate ore sourced from the Wonarah Phosphate Project located in the Barkly Tableland of Northern Territory, Australia. The project consists of two sites known as ‘Arruwurra’ and ‘Main Zone’. WON14 is one from a suite of four phosphate CRMs (the others being WON20, WON25 and WON30). All four CRMs have been characterised for P2O5, SiO2, TiO2, Al2O3, Fe2O3, CaO, MgO, MnO, K2O, Na2O and LOI at 1000°C.
Analyte Certified Value 1SD 95% Confidence Limits Low 95% Confidence Limits High Method
P2O5, Phosphorus(V) oxide (wt.%) 24.70 0.317 24.47 24.94 Borate Fusion XRF
Al2O3, Aluminium(III) oxide (wt.%) 4.36 0.039 4.33 4.39 Borate Fusion XRF
CaO, Calcium oxide (wt.%) 33.29 0.244 33.10 33.48 Borate Fusion XRF
Fe2O3, Iron(III) oxide (wt.%) 1.16 0.027 1.14 1.18 Borate Fusion XRF
K2O, Potassium oxide (wt.%) 0.346 0.008 0.340 0.352 Borate Fusion XRF
MgO, Magnesium oxide (wt.%) 0.154 0.033 0.128 0.180 Borate Fusion XRF
MnO, Manganese oxide (wt.%) 0.030 0.004 0.026 0.033 Borate Fusion XRF
Na2O, Sodium oxide (wt.%) 0.067 0.029 0.045 0.088 Borate Fusion XRF
SiO2, Silicon dioxide (wt.%) 31.77 0.282 31.55 31.98 Borate Fusion XRF
TiO2, Titanium dioxide (wt.%) 0.191 0.010 0.183 0.199 Borate Fusion XRF
LOI1000, Loss On Ignition @1000°C (wt.%) 2.41 0.108 2.32 2.50 Thermogravimetry
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