OREAS 990

OREAS 990 is a matrix-matched certified reference material (MMCRM) prepared from copper-gold-silver concentrate samples supplied by the Rosebery mine metallurgical plant owned and operated by MMG Ltd. The Rosebery mine and plant are located in the north-west region of Tasmania, Australia approximately 125 kilometres south of Burnie. The key minerals of economic importance include sphalerite, galena, pyrite, chalcopyrite and electrum.
Analyte Certified Value 1SD 95% Confidence Limits Low 95% Confidence Limits High Method
Cu, Copper (wt.%) 16.87 0.100 16.82 16.93 Classical Wet Chemistry
Au, Gold (ppm) 76.11 0.751 75.65 76.57 Pb Fire Assay
Ag, Silver (ppm) 1765 14 1756 1774 Pb Fire Assay
Al, Aluminium (wt.%) 0.938 0.024 0.921 0.955 Peroxide Fusion ICP
As, Arsenic (ppm) 4491 165 4319 4663 Peroxide Fusion ICP
Cu, Copper (wt.%) 16.97 0.521 16.61 17.34 Peroxide Fusion ICP
Fe, Iron (wt.%) 20.18 0.537 19.80 20.55 Peroxide Fusion ICP
Mg, Magnesium (wt.%) 0.156 0.006 0.151 0.160 Peroxide Fusion ICP
Mn, Manganese (wt.%) 0.387 0.010 0.379 0.395 Peroxide Fusion ICP
Pb, Lead (wt.%) 8.64 0.178 8.52 8.77 Peroxide Fusion ICP
S, Sulphur (wt.%) 30.29 0.804 29.63 30.94 Peroxide Fusion ICP
Si, Silicon (wt.%) 2.08 0.067 2.03 2.14 Peroxide Fusion ICP
Ti, Titanium (wt.%) 0.039 0.002 0.036 0.041 Peroxide Fusion ICP
Zn, Zinc (wt.%) 13.62 0.211 13.49 13.76 Peroxide Fusion ICP
Ag, Silver (ppm) 1745 37 1708 1783 4-Acid Digestion
Al, Aluminium (wt.%) 0.915 0.056 0.872 0.958 4-Acid Digestion
As, Arsenic (ppm) 4161 328 3932 4389 4-Acid Digestion
Cd, Cadmium (ppm) 335 13 325 345 4-Acid Digestion
Cr, Chromium (ppm) 9.41 1.25 8.18 10.64 4-Acid Digestion
Cu, Copper (wt.%) 16.99 0.434 16.72 17.25 4-Acid Digestion
Fe, Iron (wt.%) 20.07 0.990 19.38 20.77 4-Acid Digestion
K, Potassium (wt.%) 0.395 0.022 0.378 0.412 4-Acid Digestion
Mg, Magnesium (wt.%) 0.164 0.007 0.160 0.169 4-Acid Digestion
Mn, Manganese (wt.%) 0.372 0.024 0.356 0.388 4-Acid Digestion
Mo, Molybdenum (ppm) 116 10 108 125 4-Acid Digestion
Ni, Nickel (ppm) 93 7.4 87 100 4-Acid Digestion
Pb, Lead (wt.%) 8.62 0.199 8.51 8.73 4-Acid Digestion
S, Sulphur (wt.%) 28.29 1.844 26.56 30.03 4-Acid Digestion
Sb, Antimony (ppm) 4650 321 4383 4916 4-Acid Digestion
Zn, Zinc (wt.%) 13.43 0.518 13.10 13.75 4-Acid Digestion
Zr, Zirconium (ppm) 38.7 5.4 33.7 43.7 4-Acid Digestion
S, Sulphur (wt.%) 30.47 0.553 30.23 30.72 Infrared Combustion
Downloads
Certificate DataPack SDS NRAM (231 KB)
Archived

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

Specifications