oxide
manganiferous sedimentary
secondary enrichment
OREAS 173
SKU: 173
OREAS 173 has been prepared from manganese ores sourced from the Glosam Mine
situated within Postmasburg Manganese Field located in the Northern Cape
Province of South Africa. A small quantity of barren oxidised siliciclastic
material was added to achieve the desired Mn grade. The ores are composed mainly
of braunite group minerals including braunite (3Mn2O3.MnSiO3), partridgeite
(Mn2O3) and bixbyite (Mn,Fe)2O3.
Fifteen laboratories participated in the program employing the following
methods:
Mn ore package for Al2O3, BaO, CaO, Cr2O3, Fe2O3, K2O, MgO, MnO, Na2O,
P2O5, S, SiO2, TiO2 & V2O5 by borate fusion with XRF finish;
Thermogravimetry: Loss on Ignition (LOI) at 1000°C;
4-acid digestion for full suite elemental package by ICP-OES and MS
finish;
Specific gravity by gas/liquid pycnometry or volumetric
flask.
Specifications
- State: oxide
- Matrix: manganiferous sedimentary
- Mineralisation: secondary enrichment
- CRM Group: Mn ore
Certified Values
| Analyte | Certified Value | 1SD | 95% CL Low | 95% CL High | Method |
|---|---|---|---|---|---|
| Mn, Manganese (wt.%) | 28.30 | 0.275 | 28.13 | 28.46 | Borate Fusion XRF |
| Fe, Iron (wt.%) | 25.23 | 0.231 | 25.11 | 25.36 | Borate Fusion XRF |
| P, Phosphorus (ppm) | 391 | 7 | 388 | 395 | Borate Fusion XRF |
| Al2O3, Aluminium(III) oxide (wt.%) | 7.97 | 0.087 | 7.92 | 8.02 | Borate Fusion XRF |
| BaO, Barium oxide (wt.%) | 0.894 | 0.026 | 0.878 | 0.910 | Borate Fusion XRF |
| CaO, Calcium oxide (wt.%) | 0.347 | 0.009 | 0.342 | 0.352 | Borate Fusion XRF |
| Cu, Copper (ppm) | 108 | 13 | 98 | 118 | Borate Fusion XRF |
| Fe2O3, Iron(III) oxide (wt.%) | 36.08 | 0.331 | 35.89 | 36.26 | Borate Fusion XRF |
| K2O, Potassium oxide (wt.%) | 0.852 | 0.018 | 0.843 | 0.862 | Borate Fusion XRF |
| MgO, Magnesium oxide (wt.%) | 0.308 | 0.020 | 0.296 | 0.320 | Borate Fusion XRF |
| MnO, Manganese oxide (wt.%) | 36.54 | 0.355 | 36.33 | 36.75 | Borate Fusion XRF |
| Na2O, Sodium oxide (wt.%) | 0.437 | 0.018 | 0.426 | 0.449 | Borate Fusion XRF |
| P2O5, Phosphorus(V) oxide (wt.%) | 0.090 | 0.002 | 0.089 | 0.090 | Borate Fusion XRF |
| SiO2, Silicon dioxide (wt.%) | 7.10 | 0.079 | 7.06 | 7.14 | Borate Fusion XRF |
| SO3, Sulphur trioxide (wt.%) | 0.015 | 0.004 | 0.012 | 0.018 | Borate Fusion XRF |
| TiO2, Titanium dioxide (wt.%) | 0.353 | 0.008 | 0.349 | 0.357 | Borate Fusion XRF |
| V2O5, Vanadium(V) oxide (ppm) | 223 | 40 | 196 | 250 | Borate Fusion XRF |
| LOI1000, Loss on ignition @1000 °C (wt.%) | 6.55 | 0.208 | 6.42 | 6.69 | Thermogravimetry |
| SG, Specific Gravity (Unity) | 4.25 | 0.326 | 4.03 | 4.47 | Gas / Liquid Pycnometry |
| Al, Aluminium (wt.%) | 3.58 | 0.320 | 3.30 | 3.86 | 4-Acid Digestion |
| As, Arsenic (ppm) | 57 | 8 | 50 | 65 | 4-Acid Digestion |
| Ba, Barium (wt.%) | 0.790 | 0.037 | 0.763 | 0.817 | 4-Acid Digestion |
| Be, Beryllium (ppm) | 4.60 | 0.48 | 4.26 | 4.94 | 4-Acid Digestion |
| Bi, Bismuth (ppm) | 0.94 | 0.079 | 0.88 | 0.99 | 4-Acid Digestion |
| Ca, Calcium (wt.%) | 0.246 | 0.011 | 0.239 | 0.254 | 4-Acid Digestion |
| Cd, Cadmium (ppm) | 0.27 | 0.04 | 0.24 | 0.31 | 4-Acid Digestion |
| Ce, Cerium (ppm) | 64 | 3.3 | 62 | 67 | 4-Acid Digestion |
| Co, Cobalt (ppm) | 70 | 3.2 | 68 | 73 | 4-Acid Digestion |
| Cr, Chromium (ppm) | 69 | 6.8 | 63 | 74 | 4-Acid Digestion |
| Cs, Caesium (ppm) | 0.91 | 0.09 | 0.83 | 1.00 | 4-Acid Digestion |
| Cu, Copper (ppm) | 103 | 4 | 99 | 106 | 4-Acid Digestion |
| Dy, Dysprosium (ppm) | 7.54 | 0.680 | 6.63 | 8.44 | 4-Acid Digestion |
| Er, Erbium (ppm) | 4.39 | 0.386 | 3.87 | 4.90 | 4-Acid Digestion |
| Fe, Iron (wt.%) | 25.17 | 0.660 | 24.65 | 25.68 | 4-Acid Digestion |
| Ga, Gallium (ppm) | 16.3 | 2.4 | 14.2 | 18.5 | 4-Acid Digestion |
| Hf, Hafnium (ppm) | 2.05 | 0.21 | 1.89 | 2.22 | 4-Acid Digestion |
| Ho, Holmium (ppm) | 1.56 | 0.18 | 1.36 | 1.75 | 4-Acid Digestion |
| In, Indium (ppm) | 0.088 | 0.009 | 0.081 | 0.095 | 4-Acid Digestion |
| K, Potassium (wt.%) | 0.708 | 0.027 | 0.688 | 0.728 | 4-Acid Digestion |
| La, Lanthanum (ppm) | 34.5 | 3.20 | 32.0 | 37.0 | 4-Acid Digestion |
| Li, Lithium (ppm) | 1181 | 65 | 1136 | 1226 | 4-Acid Digestion |
| Lu, Lutetium (ppm) | 0.60 | 0.046 | 0.54 | 0.67 | 4-Acid Digestion |
| Mg, Magnesium (wt.%) | 0.166 | 0.012 | 0.157 | 0.175 | 4-Acid Digestion |
| Mn, Manganese (wt.%) | 28.25 | 0.555 | 27.79 | 28.72 | 4-Acid Digestion |
| Mo, Molybdenum (ppm) | 2.06 | 0.28 | 1.80 | 2.32 | 4-Acid Digestion |
| Na, Sodium (wt.%) | 0.320 | 0.023 | 0.301 | 0.339 | 4-Acid Digestion |
| Nb, Niobium (ppm) | 5.10 | 0.471 | 4.68 | 5.53 | 4-Acid Digestion |
| Nd, Neodymium (ppm) | 35.8 | 3.8 | 31.6 | 40.0 | 4-Acid Digestion |
| Ni, Nickel (ppm) | 137 | 6 | 131 | 143 | 4-Acid Digestion |
| P, Phosphorus (wt.%) | 0.035 | 0.003 | 0.033 | 0.038 | 4-Acid Digestion |
| Pb, Lead (ppm) | 282 | 23 | 266 | 299 | 4-Acid Digestion |
| Pr, Praseodymium (ppm) | 8.58 | 1.13 | 7.04 | 10.12 | 4-Acid Digestion |
| Rb, Rubidium (ppm) | 11.9 | 1.01 | 11.1 | 12.7 | 4-Acid Digestion |
| Re, Rhenium (ppm) | < 0.002 | IND | IND | IND | 4-Acid Digestion |
| Sb, Antimony (ppm) | 3.23 | 0.293 | 2.99 | 3.47 | 4-Acid Digestion |
| Sc, Scandium (ppm) | 16.2 | 1.04 | 15.3 | 17.1 | 4-Acid Digestion |
| Se, Selenium (ppm) | < 1.00 | IND | IND | IND | 4-Acid Digestion |
| Sm, Samarium (ppm) | 8.28 | 1.76 | 5.90 | 10.66 | 4-Acid Digestion |
| Sn, Tin (ppm) | 1.98 | 0.180 | 1.86 | 2.10 | 4-Acid Digestion |
| Sr, Strontium (ppm) | 420 | 24 | 401 | 439 | 4-Acid Digestion |
| Ta, Tantalum (ppm) | 0.35 | 0.021 | 0.34 | 0.37 | 4-Acid Digestion |
| Tb, Terbium (ppm) | 1.30 | 0.116 | 1.15 | 1.45 | 4-Acid Digestion |
| Th, Thorium (ppm) | 4.43 | 0.233 | 4.28 | 4.59 | 4-Acid Digestion |
| Ti, Titanium (wt.%) | 0.199 | 0.011 | 0.190 | 0.208 | 4-Acid Digestion |
| Tl, Thallium (ppm) | 0.82 | 0.076 | 0.76 | 0.89 | 4-Acid Digestion |
| Tm, Thulium (ppm) | 0.61 | 0.060 | 0.53 | 0.69 | 4-Acid Digestion |
| U, Uranium (ppm) | 1.64 | 0.075 | 1.59 | 1.70 | 4-Acid Digestion |
| V, Vanadium (ppm) | 118 | 6 | 114 | 123 | 4-Acid Digestion |
| W, Tungsten (ppm) | 9.11 | 0.711 | 8.59 | 9.63 | 4-Acid Digestion |
| Y, Yttrium (ppm) | 49.6 | 4.50 | 46.3 | 52.9 | 4-Acid Digestion |
| Yb, Ytterbium (ppm) | 3.85 | 0.318 | 3.43 | 4.28 | 4-Acid Digestion |
| Zn, Zinc (ppm) | 80 | 9 | 72 | 87 | 4-Acid Digestion |
| Zr, Zirconium (ppm) | 71 | 2.8 | 69 | 73 | 4-Acid Digestion |
Product Specifications
State
oxide
Matrix
manganiferous sedimentary
Mineralisation
secondary enrichment
Availability
available
Certified Reference Values
| Analyte | Certified Value | Uncertainty (1SD) | 95% Confidence Low | 95% Confidence High | Method |
|---|---|---|---|---|---|
| Ce - Cerium (ppm) | 64 | - | - | - | 4-Acid Digestion |
| Dy - Dysprosium (ppm) | 7.54 | - | - | - | 4-Acid Digestion |
| Er - Erbium (ppm) | 4.39 | - | - | - | 4-Acid Digestion |
| Ho - Holmium (ppm) | 1.56 | - | - | - | 4-Acid Digestion |
| La - Lanthanum (ppm) | 34.5 | - | - | - | 4-Acid Digestion |
| Lu - Lutetium (ppm) | 0.60 | - | - | - | 4-Acid Digestion |
| Nd - Neodymium (ppm) | 35.8 | - | - | - | 4-Acid Digestion |
| Pr - Praseodymium (ppm) | 8.58 | - | - | - | 4-Acid Digestion |
| Sm - Samarium (ppm) | 8.28 | - | - | - | 4-Acid Digestion |
| Tb - Terbium (ppm) | 1.30 | - | - | - | 4-Acid Digestion |
| Tm - Thulium (ppm) | 0.61 | - | - | - | 4-Acid Digestion |
| Y - Yttrium (ppm) | 49.6 | - | - | - | 4-Acid Digestion |
| Yb - Ytterbium (ppm) | 3.85 | - | - | - | 4-Acid Digestion |
SD = Standard Deviation | CL = 95% Confidence Limits
Methods: AR = Aqua Regia, 4-Acid = 4-Acid Digestion, LBF = Lithium Borate Fusion, FA/AAS = Fire Assay with Atomic Absorption, LECO = LECO Combustion Analysis
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