Specifications
-
CRM State:
-
Matrix:
-
Mineralisation:
OREAS 351 is a zinc concentrate certified reference material (CRM) prepared and certified by Ore Research & Exploration Pty Ltd. The material constituting OREAS 351 was sourced from the McArthur River Mining operation located in the Gulf of Carpentaria region in the Northern Territory of Australia. The mine is situated about 900 km southeast of Darwin. The major sulphides are pyrite, sphalerite and galena, with lesser chalcopyrite, arsenopyrite and marcasite.
Analyte | Certified Value | 1SD | 95% Confidence Limits Low | 95% Confidence Limits High | Method |
---|---|---|---|---|---|
Zn, Zinc (wt.%) | 46.97 | 0.155 | 46.88 | 47.06 | Acid Digestion Titration |
Zn, Zinc (wt.%) | 46.99 | 1.262 | 45.51 | 48.47 | 4-Acid Digestion |
Pb, Lead (wt.%) | 3.85 | 0.070 | 3.81 | 3.89 | 4-Acid Digestion |
Ag, Silver (ppm) | 120 | 3 | 118 | 121 | 4-Acid Digestion |
As, Arsenic (ppm) | 1076 | 44 | 1049 | 1102 | 4-Acid Digestion |
Bi, Bismuth (ppm) | < 5.00 | IND | IND | IND | 4-Acid Digestion |
Cd, Cadmium (ppm) | 1095 | 51 | 1059 | 1131 | 4-Acid Digestion |
Cu, Copper (wt.%) | 1.07 | 0.024 | 1.06 | 1.08 | 4-Acid Digestion |
Fe, Iron (wt.%) | 5.88 | 0.209 | 5.76 | 6.00 | 4-Acid Digestion |
Mg, Magnesium (wt.%) | 0.078 | 0.008 | 0.073 | 0.082 | 4-Acid Digestion |
Sb, Antimony (ppm) | 144 | 20 | 130 | 158 | 4-Acid Digestion |
Tl, Thallium (ppm) | 144 | 13 | 136 | 152 | 4-Acid Digestion |
SiO2, Silicon dioxide (wt.%) | 5.07 | 0.264 | 4.91 | 5.23 | Peroxide Fusion ICP |
S, Sulphur (wt.%) | 31.84 | 0.648 | 31.38 | 32.29 | Infrared Combustion |
Each quarter, we will keep you up to date with news on the latest OREAS CRMs and QA/QC best practices in the analytical industry.