OREAS 172 Mn (42.75 wt.%) manganiferous sedimentary
OR172_10g
Item: OR172_10g
Unit of measure: ea
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Description:

OREAS 172 is a supergene manganese ore matrix-matched certified reference material (MMCRM) prepared and certified by Ore Research & Exploration Pty Ltd. The material was sourced from the Groote Eylandt Mining Company Pty Ltd (GEMCO) Mn deposit which is hosted within a shallow dipping Lower Cretaceous sedimentary rock unit. Groote Eylandt is in the Gulf of Carpentaria off the coast of Australia's Northern Territory. A small portion (4.6%) of barren siltstone sourced from a quarry north of Melbourne, Australia was added to lower the grade. OREAS 172 is one of a suite of four Mn ore MMCRMs certified by borate fusion XRF covering a Mn grade range of 35-46%.

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AnalyteCertified Value1SD95% CI Low95% CI HighMethod
Al2O3, Aluminium(III) oxide (wt.%)5.80.0585.765.83Borate Fusion XRF
BaO, Barium oxide (wt.%)0.2850.0120.2790.292Borate Fusion XRF
CaO, Calcium oxide (wt.%)0.0950.0070.0920.099Borate Fusion XRF
Fe, Iron (wt.%)3.830.043.83.85Borate Fusion XRF
K2O, Potassium oxide (wt.%)1.890.0321.871.91Borate Fusion XRF
MgO, Magnesium oxide (wt.%)0.1410.0140.1330.149Borate Fusion XRF
Mn, Manganese (wt.%)42.750.21442.6442.87Borate Fusion XRF
Na2O, Sodium oxide (wt.%)0.2730.0160.2640.281Borate Fusion XRF
P, Phosphorus (ppm)75217743761Borate Fusion XRF
SiO2, Silicon dioxide (wt.%)14.090.08514.0514.14Borate Fusion XRF
TiO2, Titanium dioxide (wt.%)0.2360.0090.2330.24Borate Fusion XRF
V2O5, Vanadium(V) oxide (ppm)50145467536Borate Fusion XRF
LOI1000, Loss On Ignition @1000°C (wt.%)12.040.15611.9512.13Thermogravimetry