OREAS 22h

OREAS 22h 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 Limits Low 95% Confidence Limits High Method
Au, Gold (ppb) < 1 IND IND IND Pb Fire Assay
Ag, Silver (ppm) < 0.050 IND IND IND 4-Acid Digestion
Al, Aluminium (wt.%) 0.101 0.008 0.094 0.107 4-Acid Digestion
Ba, Barium (ppm) 5.24 0.69 4.73 5.74 4-Acid Digestion
Be, Beryllium (ppm) < 0.10 IND IND IND 4-Acid Digestion
Ca, Calcium (wt.%) 0.009 0.001 0.008 0.011 4-Acid Digestion
Ce, Cerium (ppm) 2.11 0.32 1.94 2.28 4-Acid Digestion
Co, Cobalt (ppm) 0.53 0.06 0.51 0.56 4-Acid Digestion
Cs, Caesium (ppm) 0.090 0.007 0.086 0.094 4-Acid Digestion
Cu, Copper (ppm) 6.20 0.364 5.90 6.50 4-Acid Digestion
Fe, Iron (wt.%) 0.357 0.030 0.335 0.378 4-Acid Digestion
Ga, Gallium (ppm) 0.23 0.04 0.20 0.27 4-Acid Digestion
Hf, Hafnium (ppm) 0.21 0.04 0.19 0.23 4-Acid Digestion
K, Potassium (wt.%) < 0.010 IND IND IND 4-Acid Digestion
La, Lanthanum (ppm) 1.02 0.14 0.93 1.10 4-Acid Digestion
Li, Lithium (ppm) 14.9 0.91 14.3 15.5 4-Acid Digestion
Mg, Magnesium (wt.%) < 0.010 IND IND IND 4-Acid Digestion
Mn, Manganese (wt.%) 0.007 0.000 0.006 0.007 4-Acid Digestion
Mo, Molybdenum (ppm) 0.60 0.10 0.56 0.65 4-Acid Digestion
Na, Sodium (wt.%) < 0.010 IND IND IND 4-Acid Digestion
Nb, Niobium (ppm) 0.68 0.09 0.66 0.71 4-Acid Digestion
Ni, Nickel (ppm) 4.66 0.68 4.46 4.85 4-Acid Digestion
P, Phosphorus (wt.%) < 0.005 IND IND IND 4-Acid Digestion
Pb, Lead (ppm) 0.83 0.17 0.74 0.92 4-Acid Digestion
Rb, Rubidium (ppm) 0.37 0.05 0.33 0.40 4-Acid Digestion
Re, Rhenium (ppm) < 0.002 IND IND IND 4-Acid Digestion
S, Sulphur (wt.%) < 0.010 IND IND IND 4-Acid Digestion
Sb, Antimony (ppm) 0.16 0.02 0.16 0.17 4-Acid Digestion
Sc, Scandium (ppm) 0.10 0.03 0.09 0.12 4-Acid Digestion
Sn, Tin (ppm) 0.41 0.08 0.35 0.47 4-Acid Digestion
Sr, Strontium (ppm) 0.75 0.12 0.71 0.80 4-Acid Digestion
Th, Thorium (ppm) 0.62 0.054 0.59 0.65 4-Acid Digestion
Ti, Titanium (wt.%) 0.024 0.004 0.024 0.025 4-Acid Digestion
Tl, Thallium (ppm) < 0.020 IND IND IND 4-Acid Digestion
U, Uranium (ppm) 0.12 0.03 0.11 0.14 4-Acid Digestion
W, Tungsten (ppm) 0.17 0.04 0.15 0.19 4-Acid Digestion
Y, Yttrium (ppm) 0.61 0.051 0.59 0.64 4-Acid Digestion
Zn, Zinc (ppm) 2.69 0.68 2.22 3.16 4-Acid Digestion
Zr, Zirconium (ppm) 7.07 1.35 6.16 7.98 4-Acid Digestion
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