OREAS 247

OREAS 247 was prepared from a blend of high grade gold-bearing ore and barren metasediments. The gold ore was sourced from the central Victorian goldfields and is hosted within a metamorphosed turbidite sequence of interbedded sandstones, siltstones and shales. Gold mineralisation mainly occurs within disseminated arsenopyrite and pyrite ± stibnite-quartz zones.

Thirty-five commercial analytical laboratories participated in the program to certify:

  • Gold by fire assay;
  • Full ICP-OES and ICP-MS elemental suites by 4-acid digestion.
Analyte Certified Value 1SD 95% Confidence Low 95% Confidence High Method
Au, Gold (ppm) 42.96 0.900 42.69 43.23 Pb Fire Assay
Ag, Silver (ppm) 2.16 0.121 2.10 2.22 4-Acid Digestion
Al, Aluminium (wt.%) 6.08 0.250 5.98 6.18 4-Acid Digestion
As, Arsenic (ppm) 3514 173 3421 3607 4-Acid Digestion
Ba, Barium (ppm) 550 15 544 556 4-Acid Digestion
Be, Beryllium (ppm) 2.23 0.180 2.15 2.30 4-Acid Digestion
Bi, Bismuth (ppm) 0.58 0.025 0.57 0.59 4-Acid Digestion
Ca, Calcium (wt.%) 0.826 0.029 0.814 0.838 4-Acid Digestion
Cd, Cadmium (ppm) 0.065 0.015 0.057 0.074 4-Acid Digestion
Ce, Cerium (ppm) 67 3.9 65 69 4-Acid Digestion
Co, Cobalt (ppm) 12.0 0.41 11.8 12.2 4-Acid Digestion
Cr, Chromium (ppm) 97 8.5 93 101 4-Acid Digestion
Cs, Caesium (ppm) 8.49 0.453 8.30 8.67 4-Acid Digestion
Cu, Copper (ppm) 42.2 2.71 41.1 43.4 4-Acid Digestion
Dy, Dysprosium (ppm) 2.73 0.35 2.50 2.95 4-Acid Digestion
Er, Erbium (ppm) 1.49 0.20 1.37 1.62 4-Acid Digestion
Eu, Europium (ppm) 0.96 0.072 0.92 1.00 4-Acid Digestion
Fe, Iron (wt.%) 3.32 0.105 3.28 3.37 4-Acid Digestion
Ga, Gallium (ppm) 16.3 1.16 15.8 16.8 4-Acid Digestion
Gd, Gadolinium (ppm) 4.23 0.45 3.96 4.50 4-Acid Digestion
Hf, Hafnium (ppm) 3.57 0.314 3.43 3.71 4-Acid Digestion
Ho, Holmium (ppm) 0.54 0.07 0.47 0.60 4-Acid Digestion
In, Indium (ppm) 0.058 0.005 0.055 0.060 4-Acid Digestion
K, Potassium (wt.%) 2.45 0.103 2.40 2.49 4-Acid Digestion
La, Lanthanum (ppm) 33.1 2.22 32.1 34.0 4-Acid Digestion
Li, Lithium (ppm) 31.8 1.37 31.2 32.3 4-Acid Digestion
Lu, Lutetium (ppm) 0.24 0.03 0.21 0.26 4-Acid Digestion
Mg, Magnesium (wt.%) 1.22 0.044 1.20 1.24 4-Acid Digestion
Mn, Manganese (wt.%) 0.036 0.001 0.035 0.036 4-Acid Digestion
Mo, Molybdenum (ppm) 1.76 0.139 1.70 1.81 4-Acid Digestion
Na, Sodium (wt.%) 0.499 0.037 0.482 0.515 4-Acid Digestion
Nb, Niobium (ppm) 11.7 1.4 11.1 12.4 4-Acid Digestion
Nd, Neodymium (ppm) 29.3 1.69 28.4 30.3 4-Acid Digestion
Ni, Nickel (ppm) 45.9 2.73 44.8 47.0 4-Acid Digestion
P, Phosphorus (wt.%) 0.048 0.003 0.047 0.049 4-Acid Digestion
Pb, Lead (ppm) 31.9 2.15 31.0 32.8 4-Acid Digestion
Pr, Praseodymium (ppm) 7.90 0.541 7.56 8.25 4-Acid Digestion
Rb, Rubidium (ppm) 144 9 140 147 4-Acid Digestion
Re, Rhenium (ppm) 0.002 IND IND IND 4-Acid Digestion
S, Sulphur (wt.%) 0.714 0.039 0.696 0.732 4-Acid Digestion
Sb, Antimony (ppm) 3295 115 3230 3360 4-Acid Digestion
Sc, Scandium (ppm) 11.4 0.80 11.0 11.7 4-Acid Digestion
Sm, Samarium (ppm) 5.50 0.401 5.26 5.73 4-Acid Digestion
Sn, Tin (ppm) 3.31 0.262 3.20 3.42 4-Acid Digestion
Sr, Strontium (ppm) 96 4.2 95 98 4-Acid Digestion
Ta, Tantalum (ppm) 0.92 0.063 0.88 0.95 4-Acid Digestion
Tb, Terbium (ppm) 0.53 0.026 0.51 0.54 4-Acid Digestion
Th, Thorium (ppm) 12.6 0.53 12.4 12.8 4-Acid Digestion
Ti, Titanium (wt.%) 0.390 0.025 0.379 0.400 4-Acid Digestion
Tl, Thallium (ppm) 0.80 0.052 0.77 0.82 4-Acid Digestion
Tm, Thulium (ppm) 0.23 0.03 0.20 0.25 4-Acid Digestion
U, Uranium (ppm) 2.53 0.115 2.49 2.57 4-Acid Digestion
V, Vanadium (ppm) 82 4.1 80 84 4-Acid Digestion
W, Tungsten (ppm) 7.88 1.32 7.16 8.59 4-Acid Digestion
Y, Yttrium (ppm) 13.1 1.8 12.3 13.9 4-Acid Digestion
Yb, Ytterbium (ppm) 1.54 0.19 1.42 1.66 4-Acid Digestion
Zn, Zinc (ppm) 86 3.7 85 88 4-Acid Digestion
Zr, Zirconium (ppm) 125 13 119 130 4-Acid Digestion
Downloads
Certificate DataPack SDS NRAM (221 KB)
Add to cart
Pricing
  • 60g Sachet
    $5.60
  • 500g Jar
    $46.50
Specifications
CRM Group