Specifications
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CRM State:
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Matrix:
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Mineralisation:
OREAS 22d
OREAS 22d 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 1 parts per billion. Seven commercial
analytical laboratories participated in the program to characterise (in addition
to gold by fire assay) Ag, Al, As, Ba, Bi, Cd, Co, Cu, Fe, Hf, Li, Mn, Mo, Nb,
Ni, Rb, Sb, Sn, Th, Ti, U, V, W, Y, Zn and Zr by 4-acid digestion with
ICP-OES or ICP-MS finish.
| Analyte | Certified Value | 1SD | 95% Confidence Limits Low | 95% Confidence Limits High | Method |
|---|---|---|---|---|---|
| Au, Gold (ppb) | < 1 | IND | IND | IND | Pb Fire Assay |
| Cu, Copper (ppm) | 9.23 | 1.34 | 7.85 | 10.61 | 4-Acid Digestion |
| Ag, Silver (ppm) | < 0.100 | IND | IND | IND | 4-Acid Digestion |
| Al, Aluminium (wt.%) | 0.132 | 0.008 | 0.123 | 0.142 | 4-Acid Digestion |
| As, Arsenic (ppm) | < 1.00 | IND | IND | IND | 4-Acid Digestion |
| Ba, Barium (ppm) | 6.17 | 0.63 | 5.66 | 6.67 | 4-Acid Digestion |
| Bi, Bismuth (ppm) | < 0.10 | IND | IND | IND | 4-Acid Digestion |
| Cd, Cadmium (ppm) | < 0.10 | IND | IND | IND | 4-Acid Digestion |
| Co, Cobalt (ppm) | 0.85 | 0.071 | 0.77 | 0.93 | 4-Acid Digestion |
| Fe, Iron (wt.%) | 0.468 | 0.037 | 0.432 | 0.504 | 4-Acid Digestion |
| Hf, Hafnium (ppm) | 0.22 | 0.03 | 0.19 | 0.24 | 4-Acid Digestion |
| Li, Lithium (ppm) | 14.2 | 1.33 | 12.5 | 16.0 | 4-Acid Digestion |
| Mn, Manganese (wt.%) | 0.011 | 0.001 | 0.009 | 0.013 | 4-Acid Digestion |
| Mo, Molybdenum (ppm) | 2.36 | 0.086 | 2.28 | 2.44 | 4-Acid Digestion |
| Nb, Niobium (ppm) | 0.88 | 0.081 | 0.79 | 0.97 | 4-Acid Digestion |
| Ni, Nickel (ppm) | 4.38 | 0.63 | 4.05 | 4.70 | 4-Acid Digestion |
| Pb, Lead (ppm) | 0.72 | 0.26 | 0.49 | 0.95 | 4-Acid Digestion |
| Rb, Rubidium (ppm) | 0.54 | 0.06 | 0.49 | 0.59 | 4-Acid Digestion |
| Sb, Antimony (ppm) | 0.21 | 0.03 | 0.19 | 0.22 | 4-Acid Digestion |
| Sn, Tin (ppm) | 0.61 | 0.013 | 0.59 | 0.62 | 4-Acid Digestion |
| Th, Thorium (ppm) | 0.67 | 0.10 | 0.55 | 0.78 | 4-Acid Digestion |
| Ti, Titanium (wt.%) | 0.021 | 0.001 | 0.021 | 0.022 | 4-Acid Digestion |
| U, Uranium (ppm) | 0.18 | 0.05 | 0.13 | 0.22 | 4-Acid Digestion |
| V, Vanadium (ppm) | 2.63 | 0.50 | 2.12 | 3.15 | 4-Acid Digestion |
| W, Tungsten (ppm) | 0.21 | 0.03 | 0.18 | 0.24 | 4-Acid Digestion |
| Y, Yttrium (ppm) | 0.69 | 0.07 | 0.61 | 0.76 | 4-Acid Digestion |
| Zn, Zinc (ppm) | 6.70 | 1.31 | 5.59 | 7.81 | 4-Acid Digestion |
| Zr, Zirconium (ppm) | 7.02 | 0.600 | 6.31 | 7.73 | 4-Acid Digestion |
Downloads
Certificate DataPack SDS NRAM (367 KB)Specifications
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CRM State:
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Matrix:
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Mineralisation:
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CRM Group(s):