OREAS 22b

OREAS 22b has been prepared from quartz sand to which 0.5% iron oxide has been added to produce a pale grey pulp. It is characterised by extremely low background gold of less than 2 parts per billion and very low base metal values, typically less than 10 parts per million.

Analyte Certified Value 1SD 95% Confidence Limits Low 95% Confidence Limits High Method
Au, Gold (ppb) < 2 IND IND IND Pb Fire Assay
Ag, Silver (ppm) < 0.100 IND IND IND 4-Acid Digestion
Cu, Copper (ppm) 8.90 0.700 7.80 9.90 4-Acid Digestion
As, Arsenic (ppm) < 1.00 IND IND IND 4-Acid Digestion
Ba, Barium (ppm) 6.90 0.400 6.30 7.40 4-Acid Digestion
Bi, Bismuth (ppm) ~0.020 4-Acid Digestion
Cd, Cadmium (ppm) < 0.10 IND IND IND 4-Acid Digestion
Co, Cobalt (ppm) 0.61 0.000 0.59 0.63 4-Acid Digestion
Mo, Molybdenum (ppm) 4.90 0.200 4.70 5.20 4-Acid Digestion
Ni, Nickel (ppm) ~5.00 4-Acid Digestion
Pb, Lead (ppm) < 2.00 IND IND IND 4-Acid Digestion
Sb, Antimony (ppm) < 0.20 IND IND IND 4-Acid Digestion
Sn, Tin (ppm) 0.60 0.10 0.40 0.80 4-Acid Digestion
Th, Thorium (ppm) 0.60 0.000 0.50 0.70 4-Acid Digestion
U, Uranium (ppm) ~0.100 4-Acid Digestion
W, Tungsten (ppm) < 0.20 IND IND IND 4-Acid Digestion
Zn, Zinc (ppm) 10.0 0.70 8.0 12.0 4-Acid Digestion
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Certificate DataPack SDS NRAM (231 KB)
Archived

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Information is provided for reference only.

Specifications