OREAS 150

OREAS 150 is a certified reference material (CRM) produced from a blend of tin-copper sulphide ores, hornfels, granodiorite, and calcium carbonate. The ores were sourced from the Renison Bell tin deposit in western Tasmania, Australia. Mineralisation is structurally controlled, with cassiterite hosted in silica- and tourmaline-altered veins within carbonate-rich metasedimentary rocks of the Mount Read Volcanics. The deposit is genetically linked to Devonian granite intrusions. Cassiterite (SnO₂) is the dominant tin-bearing mineral, accompanied by sulphide phases such as pyrrhotite, arsenopyrite, chalcopyrite, and stannite.

Eighteen commercial analytical laboratories participated in the program to certify the elements reported below using the following methods:

  • Lithium borate fusion whole rock analysis package by X-ray fluorescence
  • Thermogravimetry: Loss on Ignition (LOI) at 1000 °C
  • Lithium borate or sodium peroxide fusion with full suite ICP-OES and ICP-MS elemental packages
  • 4-acid (HNO3-HF-HClO4-HCl) digestion with full suite ICP-OES and ICP-MS elemental packages

Homogeneity was evaluated using 12 subsamples analysed by oxidising fusion with X-ray fluorescence finish. ANOVA was applied to duplicates from six test units to compare within- and between-unit variances, providing a statistical measure of batch homogeneity.

Analyte Certified Value 1SD Expanded Uncertainty Low Expanded Uncertainty High Method
Sn, Tin (wt.%) 1.51 0.024 1.49 1.53 Borate Fusion XRF
Sn, Tin (wt.%) 1.47 0.063 1.41 1.53 Borate / Peroxide Fusion ICP
Cu, Copper (wt.%) 0.187 0.004 0.182 0.192 4-Acid Digestion
Al2O3, Aluminium(III) oxide (wt.%) 9.70 0.159 9.54 9.85 Borate Fusion XRF
As, Arsenic (wt.%) 0.654 0.017 0.628 0.679 Borate Fusion XRF
BaO, Barium oxide (ppm) 322 66 224 421 Borate Fusion XRF
CaO, Calcium oxide (wt.%) 7.37 0.171 7.22 7.52 Borate Fusion XRF
Co, Cobalt (ppm) < 100 IND IND IND Borate Fusion XRF
Cu, Copper (wt.%) 0.182 0.006 0.173 0.191 Borate Fusion XRF
Fe2O3, Iron(III) oxide (wt.%) 18.01 0.390 17.66 18.36 Borate Fusion XRF
HfO2, Hafnium dioxide (ppm) < 100 IND IND IND Borate Fusion XRF
K2O, Potassium oxide (wt.%) 1.49 0.026 1.46 1.52 Borate Fusion XRF
MgO, Magnesium oxide (wt.%) 2.65 0.144 2.55 2.75 Borate Fusion XRF
MnO, Manganese oxide (wt.%) 0.116 0.005 0.113 0.119 Borate Fusion XRF
Mo, Molybdenum (ppm) < 50 IND IND IND Borate Fusion XRF
Na2O, Sodium oxide (wt.%) 0.715 0.079 0.627 0.802 Borate Fusion XRF
P2O5, Phosphorus(V) oxide (wt.%) 0.104 0.006 0.096 0.111 Borate Fusion XRF
SiO2, Silicon dioxide (wt.%) 45.60 1.166 44.61 46.60 Borate Fusion XRF
SO3, Sulphur trioxide (wt.%) 16.34 0.437 15.88 16.80 Borate Fusion XRF
SrO, Strontium oxide (ppm) 116 9 109 122 Borate Fusion XRF
TiO2, Titanium dioxide (wt.%) 0.457 0.014 0.444 0.471 Borate Fusion XRF
V2O5, Vanadium(V) oxide (ppm) 111 18 84 138 Borate Fusion XRF
Zn, Zinc (ppm) 102 29 68 136 Borate Fusion XRF
LOI1000, Loss on ignition @1000 °C (wt.%) 5.73 0.94 5.04 6.41 Thermogravimetry
Al, Aluminium (wt.%) 5.15 0.157 4.99 5.31 Borate / Peroxide Fusion ICP
As, Arsenic (wt.%) 0.639 0.026 0.618 0.661 Borate / Peroxide Fusion ICP
Ba, Barium (ppm) 281 21 257 305 Borate / Peroxide Fusion ICP
Be, Beryllium (ppm) 5.35 0.66 3.89 6.82 Borate / Peroxide Fusion ICP
Ca, Calcium (wt.%) 5.27 0.239 4.94 5.60 Borate / Peroxide Fusion ICP
Ce, Cerium (ppm) 48.2 3.38 43.0 53.4 Borate / Peroxide Fusion ICP
Co, Cobalt (ppm) 21.0 1.44 19.3 22.8 Borate / Peroxide Fusion ICP
Cr, Chromium (ppm) 61 11 36 85 Borate / Peroxide Fusion ICP
Cs, Caesium (ppm) 5.69 0.563 4.82 6.55 Borate / Peroxide Fusion ICP
Cu, Copper (wt.%) 0.186 0.003 0.180 0.192 Borate / Peroxide Fusion ICP
Dy, Dysprosium (ppm) 4.26 0.260 3.68 4.85 Borate / Peroxide Fusion ICP
Er, Erbium (ppm) 2.35 0.44 1.80 2.90 Borate / Peroxide Fusion ICP
Eu, Europium (ppm) 0.90 0.11 0.74 1.07 Borate / Peroxide Fusion ICP
Fe, Iron (wt.%) 12.61 0.283 12.12 13.10 Borate / Peroxide Fusion ICP
Ga, Gallium (ppm) 21.4 1.21 19.8 23.1 Borate / Peroxide Fusion ICP
Gd, Gadolinium (ppm) 4.41 0.44 3.63 5.19 Borate / Peroxide Fusion ICP
Ho, Holmium (ppm) 0.80 0.15 0.61 0.99 Borate / Peroxide Fusion ICP
K, Potassium (wt.%) 1.30 0.095 1.21 1.39 Borate / Peroxide Fusion ICP
La, Lanthanum (ppm) 23.2 1.79 20.4 26.1 Borate / Peroxide Fusion ICP
Li, Lithium (ppm) 104 8 94 113 Borate / Peroxide Fusion ICP
Mg, Magnesium (wt.%) 1.56 0.053 1.51 1.61 Borate / Peroxide Fusion ICP
Mn, Manganese (wt.%) 0.091 0.003 0.087 0.094 Borate / Peroxide Fusion ICP
Nd, Neodymium (ppm) 22.6 1.29 20.6 24.6 Borate / Peroxide Fusion ICP
Ni, Nickel (ppm) 24.6 6.2 11.5 37.7 Borate / Peroxide Fusion ICP
P, Phosphorus (wt.%) 0.048 0.005 0.042 0.053 Borate / Peroxide Fusion ICP
Pr, Praseodymium (ppm) 5.89 0.423 4.94 6.84 Borate / Peroxide Fusion ICP
Rb, Rubidium (ppm) 115 8 107 123 Borate / Peroxide Fusion ICP
S, Sulphur (wt.%) 6.33 0.175 6.13 6.52 Borate / Peroxide Fusion ICP
Si, Silicon (wt.%) 21.94 0.667 21.20 22.68 Borate / Peroxide Fusion ICP
Sm, Samarium (ppm) 4.56 0.66 3.59 5.53 Borate / Peroxide Fusion ICP
Sr, Strontium (ppm) 90 2.6 85 94 Borate / Peroxide Fusion ICP
Ta, Tantalum (ppm) 0.92 0.11 0.68 1.17 Borate / Peroxide Fusion ICP
Tb, Terbium (ppm) 0.67 0.10 0.52 0.81 Borate / Peroxide Fusion ICP
Th, Thorium (ppm) 9.12 0.511 8.32 9.93 Borate / Peroxide Fusion ICP
Ti, Titanium (wt.%) 0.269 0.007 0.257 0.281 Borate / Peroxide Fusion ICP
Tm, Thulium (ppm) 0.35 0.06 0.25 0.45 Borate / Peroxide Fusion ICP
U, Uranium (ppm) 2.34 0.226 2.02 2.66 Borate / Peroxide Fusion ICP
Y, Yttrium (ppm) 22.5 2.01 19.2 25.8 Borate / Peroxide Fusion ICP
Yb, Ytterbium (ppm) 2.31 0.39 1.80 2.82 Borate / Peroxide Fusion ICP
Zn, Zinc (ppm) 94 25 74 115 Borate / Peroxide Fusion ICP
Ag, Silver (ppm) 2.10 0.158 1.93 2.28 4-Acid Digestion
Al, Aluminium (wt.%) 4.94 0.170 4.79 5.09 4-Acid Digestion
As, Arsenic (wt.%) 0.633 0.018 0.612 0.653 4-Acid Digestion
Ba, Barium (ppm) 283 11 270 297 4-Acid Digestion
Be, Beryllium (ppm) 4.90 0.324 4.54 5.26 4-Acid Digestion
Bi, Bismuth (ppm) 119 8 111 126 4-Acid Digestion
Ca, Calcium (wt.%) 5.16 0.161 5.00 5.32 4-Acid Digestion
Ce, Cerium (ppm) 48.8 5.1 44.1 53.5 4-Acid Digestion
Co, Cobalt (ppm) 20.6 1.19 19.7 21.6 4-Acid Digestion
Cr, Chromium (ppm) 49.3 5.0 44.5 54.2 4-Acid Digestion
Cs, Caesium (ppm) 5.94 0.359 5.50 6.37 4-Acid Digestion
Dy, Dysprosium (ppm) 2.54 0.33 2.17 2.92 4-Acid Digestion
Er, Erbium (ppm) 1.36 0.20 1.14 1.58 4-Acid Digestion
Eu, Europium (ppm) 0.82 0.062 0.72 0.92 4-Acid Digestion
Fe, Iron (wt.%) 12.38 0.239 12.10 12.66 4-Acid Digestion
Ga, Gallium (ppm) 21.3 1.00 20.1 22.6 4-Acid Digestion
Gd, Gadolinium (ppm) 3.63 0.144 3.36 3.91 4-Acid Digestion
Hf, Hafnium (ppm) 2.28 0.31 2.00 2.55 4-Acid Digestion
Ho, Holmium (ppm) 0.45 0.07 0.36 0.55 4-Acid Digestion
In, Indium (ppm) 4.55 0.47 4.14 4.95 4-Acid Digestion
K, Potassium (wt.%) 1.23 0.030 1.19 1.26 4-Acid Digestion
La, Lanthanum (ppm) 23.5 1.84 21.9 25.2 4-Acid Digestion
Li, Lithium (ppm) 106 9 100 112 4-Acid Digestion
Lu, Lutetium (ppm) 0.20 0.02 0.17 0.23 4-Acid Digestion
Mg, Magnesium (wt.%) 1.48 0.056 1.43 1.52 4-Acid Digestion
Mn, Manganese (wt.%) 0.086 0.002 0.084 0.089 4-Acid Digestion
Mo, Molybdenum (ppm) 3.92 0.334 3.61 4.22 4-Acid Digestion
Na, Sodium (wt.%) 0.603 0.035 0.573 0.632 4-Acid Digestion
Nb, Niobium (ppm) 9.25 1.25 8.34 10.17 4-Acid Digestion
Nd, Neodymium (ppm) 21.4 1.77 19.0 23.8 4-Acid Digestion
Ni, Nickel (ppm) 23.8 0.88 22.6 25.0 4-Acid Digestion
P, Phosphorus (wt.%) 0.045 0.002 0.043 0.046 4-Acid Digestion
Pb, Lead (ppm) 37.4 4.1 33.9 41.0 4-Acid Digestion
Pr, Praseodymium (ppm) 5.90 0.234 5.33 6.46 4-Acid Digestion
Rb, Rubidium (ppm) 110 7 104 116 4-Acid Digestion
S, Sulphur (wt.%) 6.30 0.092 6.14 6.46 4-Acid Digestion
Sb, Antimony (ppm) 5.34 0.55 4.84 5.85 4-Acid Digestion
Sc, Scandium (ppm) 8.22 0.687 7.60 8.84 4-Acid Digestion
Sm, Samarium (ppm) 4.24 0.43 3.72 4.77 4-Acid Digestion
Sr, Strontium (ppm) 88 4.5 84 92 4-Acid Digestion
Ta, Tantalum (ppm) 0.62 0.15 0.51 0.72 4-Acid Digestion
Tb, Terbium (ppm) 0.46 0.028 0.41 0.52 4-Acid Digestion
Te, Tellurium (ppm) 0.084 0.014 0.056 0.113 4-Acid Digestion
Th, Thorium (ppm) 8.93 0.511 8.37 9.48 4-Acid Digestion
Ti, Titanium (wt.%) 0.218 0.023 0.203 0.233 4-Acid Digestion
Tl, Thallium (ppm) 0.53 0.026 0.49 0.56 4-Acid Digestion
Tm, Thulium (ppm) 0.19 0.03 0.16 0.22 4-Acid Digestion
U, Uranium (ppm) 2.04 0.171 1.81 2.27 4-Acid Digestion
V, Vanadium (ppm) 56 2.0 54 58 4-Acid Digestion
W, Tungsten (ppm) 84 4.9 77 91 4-Acid Digestion
Y, Yttrium (ppm) 12.5 1.22 11.5 13.5 4-Acid Digestion
Yb, Ytterbium (ppm) 1.38 0.22 1.16 1.60 4-Acid Digestion
Zn, Zinc (ppm) 92 6.9 86 98 4-Acid Digestion
Zr, Zirconium (ppm) 75 11 68 83 4-Acid Digestion
Downloads
Certificate DataPack SDS NRAM (226 KB)
Add to Cart
Stock
  • Pack Size
    Price
    Stock Level
  • 10g Sachet
    $5.60
    27,000 +
Specifications