OREAS 23a

OREAS 23a has been prepared from barren I-type hornblende-bearing granodiorite sourced from the Late Devonian Lysterfield granodiorite complex located in the Melbourne Province of Australia. It is characterised by very low background gold of less than 4 parts per billion. It has been certified for Au, Ag, As, Ba, Bi, Cd, Co, Cu, Mo, Ni, Pb, Sb, Sn, Th, U, W and Zn.

Analyte Certified Value 1SD 95% Confidence Limits Low 95% Confidence Limits High Method
Au, Gold (ppb) 3 1 2 4 Pb Fire Assay
Ag, Silver (ppm) 0.100 0.020 0.080 0.130 4-Acid Digestion
As, Arsenic (ppm) 37.0 3.00 35.0 39.0 4-Acid Digestion
Ba, Barium (ppm) 1092 62 1028 1156 4-Acid Digestion
Bi, Bismuth (ppm) 0.15 0.04 0.14 0.16 4-Acid Digestion
Cd, Cadmium (ppm) 0.15 0.13 0.02 0.29 4-Acid Digestion
Co, Cobalt (ppm) 14.8 0.60 14.3 15.3 4-Acid Digestion
Cu, Copper (ppm) 42.1 1.70 41.3 42.9 4-Acid Digestion
Mo, Molybdenum (ppm) 9.60 0.700 9.10 10.10 4-Acid Digestion
Ni, Nickel (ppm) 40.5 1.70 39.1 41.9 4-Acid Digestion
Pb, Lead (ppm) 21.3 1.00 20.3 22.3 4-Acid Digestion
Sb, Antimony (ppm) 0.45 0.040 0.41 0.48 4-Acid Digestion
Sn, Tin (ppm) 3.10 0.100 3.00 3.20 4-Acid Digestion
Th, Thorium (ppm) 20.9 1.70 19.3 22.4 4-Acid Digestion
U, Uranium (ppm) 6.20 0.400 5.80 6.50 4-Acid Digestion
W, Tungsten (ppm) 3.70 0.70 3.30 4.20 4-Acid Digestion
Zn, Zinc (ppm) 69 2.0 66 73 4-Acid Digestion
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Certificate DataPack SDS NRAM (231 KB)
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Information is provided for reference only.

Specifications