OREAS 170a
Specs
- CRM Type: oxide
- Matrix: manganiferous sediment
- Mineralisation: supergene
CRM Group
Price
- 10g = $3.00
- 1kg = $300.00
OREAS 170a is a high grade supergene manganese ore matrix-matched certified reference material (MMCRM) prepared and certified by Ore Research & Exploration. 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. OREAS 170a is one of two MMCRMs characterised for MnO, Fe2O3, SiO2, Al2O3, MgO, CaO, TiO2, K2O, P2O5, Na2O and LOI via lithium borate fusion with XRF finish.
| Constituent | Certified Value | 1SD | 95% Confidence Low | 95% Confidence High | Method |
|---|---|---|---|---|---|
| Manganese oxide, MnO (wt.%) | 58.17 | 0.47 | 57.83 | 58.51 | Borate Fusion XRF |
| Potassium oxide, K2O (wt.%) | 1.70 | 0.03 | 1.67 | 1.72 | Borate & Peroxide Fusion |
| Iron oxide, Fe2O3 (wt.%) | 6.49 | 0.10 | 6.41 | 6.56 | Borate & Peroxide Fusion |
| Silicon dioxide, SiO2 (wt.%) | 11.34 | 0.07 | 11.30 | 11.39 | Borate & Peroxide Fusion |
| Aluminium oxide, Al2O3 (wt.%) | 4.44 | 0.05 | 4.41 | 4.47 | Borate & Peroxide Fusion |
| Magnesium oxide, MgO (wt.%) | 0.222 | 0.021 | 0.207 | 0.237 | Borate & Peroxide Fusion |
| Calcium oxide, CaO (wt.%) | 0.090 | 0.004 | 0.088 | 0.092 | Borate & Peroxide Fusion |
| Titanium oxide, TiO2 (wt.%) | 0.179 | 0.005 | 0.176 | 0.181 | Borate & Peroxide Fusion |
| Phosphorous oxide, P2O5 (wt.%) | 0.152 | 0.005 | 0.149 | 0.155 | Borate & Peroxide Fusion |
| Sodium oxide, Na2O (wt.%) | 0.276 | 0.034 | 0.034 | 0.302 | Borate & Peroxide Fusion |
| Loss on Ignition, LOI (wt.%) | 12.14 | 0.07 | 12.09 | 12.19 | Borate & Peroxide Fusion |