OREAS 22e

OREAS 22e has been prepared from quartz sand to which 0.5% iron oxide has been added to produce a pale grey pulp. This colouring gives the material an appearance of primary origin (i.e. non-oxide). It is characterised by extremely low background gold of less than 1 part per billion.

Analyte Certified Value 1SD 95% Confidence Low 95% Confidence High Method
Au, Gold (ppb) < 1 IND IND IND Pb Fire Assay
Cu, Copper (ppm) 7.97 0.746 7.61 8.34 4-Acid Digestion
Ag, Silver (ppm) < 0.050 IND IND IND 4-Acid Digestion
Al, Aluminium (wt.%) 0.094 0.019 0.080 0.107 4-Acid Digestion
Ba, Barium (ppm) 3.92 1.08 3.23 4.60 4-Acid Digestion
Be, Beryllium (ppm) 0.061 0.018 0.050 0.072 4-Acid Digestion
Bi, Bismuth (ppm) < 0.020 IND IND IND 4-Acid Digestion
Cd, Cadmium (ppm) < 0.020 IND IND IND 4-Acid Digestion
Ce, Cerium (ppm) 2.26 0.187 2.20 2.31 4-Acid Digestion
Co, Cobalt (ppm) 0.68 0.048 0.65 0.71 4-Acid Digestion
Cr, Chromium (ppm) 6.47 1.11 5.29 7.65 4-Acid Digestion
Cs, Caesium (ppm) 0.095 0.010 0.089 0.102 4-Acid Digestion
Fe, Iron (wt.%) 0.346 0.015 0.335 0.358 4-Acid Digestion
Ga, Gallium (ppm) 0.24 0.03 0.21 0.26 4-Acid Digestion
Hf, Hafnium (ppm) 0.23 0.05 0.21 0.26 4-Acid Digestion
In, Indium (ppm) < 0.005 IND IND IND 4-Acid Digestion
K, Potassium (wt.%) < 0.010 IND IND IND 4-Acid Digestion
La, Lanthanum (ppm) 1.09 0.12 1.04 1.14 4-Acid Digestion
Li, Lithium (ppm) 14.6 0.69 14.1 15.1 4-Acid Digestion
Mg, Magnesium (wt.%) < 0.010 IND IND IND 4-Acid Digestion
Mn, Manganese (wt.%) 0.008 0.000 0.008 0.008 4-Acid Digestion
Mo, Molybdenum (ppm) 1.05 0.056 1.02 1.08 4-Acid Digestion
Na, Sodium (wt.%) < 0.005 IND IND IND 4-Acid Digestion
Nb, Niobium (ppm) 1.03 0.066 0.99 1.06 4-Acid Digestion
Nd, Neodymium (ppm) 0.90 0.078 0.84 0.96 4-Acid Digestion
Ni, Nickel (ppm) 5.23 0.442 5.01 5.44 4-Acid Digestion
P, Phosphorus (wt.%) < 0.005 IND IND IND 4-Acid Digestion
Pb, Lead (ppm) < 1.00 IND IND IND 4-Acid Digestion
Rb, Rubidium (ppm) 0.32 0.06 0.29 0.35 4-Acid Digestion
Re, Rhenium (ppm) < 0.002 IND IND IND 4-Acid Digestion
S, Sulphur (wt.%) < 0.005 IND IND IND 4-Acid Digestion
Sb, Antimony (ppm) 0.19 0.03 0.16 0.21 4-Acid Digestion
Se, Selenium (ppm) < 1.00 IND IND IND 4-Acid Digestion
Sm, Samarium (ppm) 0.20 0.009 0.19 0.21 4-Acid Digestion
Sn, Tin (ppm) 0.65 0.054 0.62 0.67 4-Acid Digestion
Sr, Strontium (ppm) 0.64 0.15 0.55 0.74 4-Acid Digestion
Ta, Tantalum (ppm) < 0.10 IND IND IND 4-Acid Digestion
Tb, Terbium (ppm) < 0.050 IND IND IND 4-Acid Digestion
Te, Tellurium (ppm) < 0.050 IND IND IND 4-Acid Digestion
Th, Thorium (ppm) 0.68 0.054 0.64 0.71 4-Acid Digestion
Ti, Titanium (wt.%) 0.031 0.001 0.030 0.032 4-Acid Digestion
Tl, Thallium (ppm) < 0.020 IND IND IND 4-Acid Digestion
Tm, Thulium (ppm) < 0.050 IND IND IND 4-Acid Digestion
U, Uranium (ppm) 0.13 0.04 0.11 0.16 4-Acid Digestion
V, Vanadium (ppm) 2.65 0.48 2.33 2.96 4-Acid Digestion
W, Tungsten (ppm) 0.17 0.05 0.13 0.21 4-Acid Digestion
Y, Yttrium (ppm) 0.63 0.09 0.56 0.70 4-Acid Digestion
Zn, Zinc (ppm) 4.33 1.47 3.28 5.38 4-Acid Digestion
Zr, Zirconium (ppm) 7.91 0.89 7.69 8.12 4-Acid Digestion
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Specifications
CRM Group