OREAS 351

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
Downloads
Certificate DataPack SDS NRAM (231 KB)
Archived

This CRM is no longer available.
Information is provided for reference only.

Specifications