OREAS 990c
SKU: 990c
OREAS 990c is a copper-gold-silver-zinc-lead concentrate certified reference
material (CRM) sourced from the Rosebery metallurgical plant owned and operated
by MMG Ltd. The Rosebery mine and plant are located in the north-west region of
Tasmania, Australia approximately 300 kilometres north-west of Hobart and 125
kilometres south of Burnie. The key minerals of economic importance include
sphalerite, galena, pyrite, chalcopyrite and electrum. Fifteen ‘umpire’
laboratories undertook copper, gold, silver and moisture analysis on the sample
as received but the results are corrected to a dry sample basis. The term
‘umpire’ here refers to the routine analysis by these laboratories using
classical methodologies for precious and base metals. Fifteen geoanalytical
laboratories also participated in the program to undertake the following:
Gold and Silver by reduced charge, fire assay with gravimetric finish;
Copper by Classical Wet Chemistry;
Full ICP-OES & MS elemental suites by 4-acid digestion;
Full ICP-OES elemental suite by peroxide fusion;
Fluorine by ion selective electrode;
S by infrared combustion furnace;
Gold by instrumental neutron activation analysis (INAA) to confirm
homogeneity (undertaken by ANSTO, Lucas Heights).
Specifications
- State: primary
- Matrix: concentrate
- Mineralisation: volcanic hosted massive sulphide
- CRM Group: Au >1 ppm, Cu ore, Au-Cu ore, Au-Ag ore, Concentrates
Certified Values
| Analyte | Certified Value | 1SD | 95% CL Low | 95% CL High | Method |
|---|---|---|---|---|---|
| Cu, Copper (wt.%) | 17.13 | 0.126 | 17.06 | 17.21 | Classical Wet Chemistry |
| Ag, Silver (ppm) | 2732 | 22 | 2701 | 2763 | Pb Fire Assay |
| Au, Gold (ppm) | 35.35 | 0.620 | 34.96 | 35.74 | Pb Fire Assay |
| Ag, Silver (ppm) | 2751 | 73 | 2642 | 2860 | 4-Acid Digestion |
| Al, Aluminium (wt.%) | 0.778 | 0.024 | 0.759 | 0.797 | 4-Acid Digestion |
| As, Arsenic (ppm) | 5834 | 304 | 5522 | 6147 | 4-Acid Digestion |
| Bi, Bismuth (ppm) | 88 | 5.5 | 82 | 94 | 4-Acid Digestion |
| Ca, Calcium (wt.%) | 0.142 | 0.007 | 0.136 | 0.149 | 4-Acid Digestion |
| Cd, Cadmium (ppm) | 415 | 22 | 398 | 432 | 4-Acid Digestion |
| Ce, Cerium (ppm) | 20.0 | 1.89 | 16.9 | 23.1 | 4-Acid Digestion |
| Co, Cobalt (ppm) | 7.84 | 0.90 | 7.03 | 8.65 | 4-Acid Digestion |
| Cs, Caesium (ppm) | 0.68 | 0.033 | 0.64 | 0.73 | 4-Acid Digestion |
| Cu, Copper (wt.%) | 17.23 | 0.340 | 16.97 | 17.49 | 4-Acid Digestion |
| Fe, Iron (wt.%) | 17.05 | 0.541 | 16.61 | 17.50 | 4-Acid Digestion |
| Ga, Gallium (ppm) | 3.51 | 0.37 | 3.20 | 3.81 | 4-Acid Digestion |
| Hf, Hafnium (ppm) | 0.95 | 0.10 | 0.85 | 1.05 | 4-Acid Digestion |
| In, Indium (ppm) | 14.3 | 1.8 | 13.0 | 15.6 | 4-Acid Digestion |
| K, Potassium (wt.%) | 0.335 | 0.014 | 0.323 | 0.347 | 4-Acid Digestion |
| La, Lanthanum (ppm) | 8.45 | 2.14 | 6.29 | 10.60 | 4-Acid Digestion |
| Li, Lithium (ppm) | 2.89 | 0.49 | 2.46 | 3.32 | 4-Acid Digestion |
| Mg, Magnesium (wt.%) | 0.122 | 0.012 | 0.114 | 0.131 | 4-Acid Digestion |
| Mn, Manganese (wt.%) | 0.368 | 0.011 | 0.360 | 0.375 | 4-Acid Digestion |
| Mo, Molybdenum (ppm) | 141 | 9 | 135 | 147 | 4-Acid Digestion |
| Na, Sodium (wt.%) | 0.034 | 0.005 | 0.029 | 0.039 | 4-Acid Digestion |
| Nb, Niobium (ppm) | 1.17 | 0.113 | 1.02 | 1.32 | 4-Acid Digestion |
| Ni, Nickel (ppm) | 7.80 | 0.574 | 7.19 | 8.40 | 4-Acid Digestion |
| Pb, Lead (wt.%) | 7.98 | 0.181 | 7.83 | 8.12 | 4-Acid Digestion |
| Rb, Rubidium (ppm) | 17.8 | 2.3 | 15.8 | 19.8 | 4-Acid Digestion |
| S, Sulphur (wt.%) | 27.88 | 2.181 | 26.12 | 29.64 | 4-Acid Digestion |
| Sb, Antimony (ppm) | 7696 | 323 | 7317 | 8075 | 4-Acid Digestion |
| Sc, Scandium (ppm) | 1.07 | 0.100 | 0.99 | 1.16 | 4-Acid Digestion |
| Sn, Tin (ppm) | 4.03 | 0.59 | 3.49 | 4.57 | 4-Acid Digestion |
| Sr, Strontium (ppm) | 16.4 | 3.1 | 14.1 | 18.8 | 4-Acid Digestion |
| Ta, Tantalum (ppm) | 0.091 | 0.013 | 0.066 | 0.116 | 4-Acid Digestion |
| Th, Thorium (ppm) | 3.84 | 0.71 | 3.23 | 4.46 | 4-Acid Digestion |
| Ti, Titanium (wt.%) | 0.027 | 0.003 | 0.025 | 0.029 | 4-Acid Digestion |
| Tl, Thallium (ppm) | 12.8 | 0.57 | 12.2 | 13.5 | 4-Acid Digestion |
| U, Uranium (ppm) | 2.19 | 0.136 | 2.06 | 2.33 | 4-Acid Digestion |
| Y, Yttrium (ppm) | 5.98 | 0.75 | 5.36 | 6.59 | 4-Acid Digestion |
| Zn, Zinc (wt.%) | 18.44 | 0.449 | 18.10 | 18.77 | 4-Acid Digestion |
| Zr, Zirconium (ppm) | 34.0 | 2.14 | 32.1 | 35.8 | 4-Acid Digestion |
| Al, Aluminium (wt.%) | 0.789 | 0.019 | 0.765 | 0.812 | Peroxide Fusion ICP |
| As, Arsenic (ppm) | 6140 | 270 | 5916 | 6364 | Peroxide Fusion ICP |
| Ba, Barium (ppm) | 1950 | 57 | 1899 | 2001 | Peroxide Fusion ICP |
| Bi, Bismuth (ppm) | 88 | 6.2 | 81 | 94 | Peroxide Fusion ICP |
| Cd, Cadmium (ppm) | 433 | 26 | 409 | 457 | Peroxide Fusion ICP |
| Ce, Cerium (ppm) | 22.2 | 2.19 | 18.7 | 25.6 | Peroxide Fusion ICP |
| Co, Cobalt (ppm) | 7.81 | 0.764 | 6.82 | 8.79 | Peroxide Fusion ICP |
| Cs, Caesium (ppm) | 0.77 | 0.12 | 0.58 | 0.96 | Peroxide Fusion ICP |
| Cu, Copper (wt.%) | 17.32 | 0.233 | 17.04 | 17.60 | Peroxide Fusion ICP |
| Dy, Dysprosium (ppm) | 1.33 | 0.15 | 1.09 | 1.58 | Peroxide Fusion ICP |
| Er, Erbium (ppm) | 0.80 | 0.071 | 0.70 | 0.89 | Peroxide Fusion ICP |
| Fe, Iron (wt.%) | 17.28 | 0.323 | 16.97 | 17.60 | Peroxide Fusion ICP |
| Ga, Gallium (ppm) | 3.69 | 0.49 | 3.14 | 4.24 | Peroxide Fusion ICP |
| Gd, Gadolinium (ppm) | 1.62 | 0.25 | 1.21 | 2.03 | Peroxide Fusion ICP |
| Ge, Germanium (ppm) | < 1.00 | IND | IND | IND | Peroxide Fusion ICP |
| Ho, Holmium (ppm) | 0.27 | 0.03 | 0.20 | 0.34 | Peroxide Fusion ICP |
| In, Indium (ppm) | 16.1 | 0.72 | 14.9 | 17.3 | Peroxide Fusion ICP |
| K, Potassium (wt.%) | 0.351 | 0.034 | 0.302 | 0.399 | Peroxide Fusion ICP |
| La, Lanthanum (ppm) | 11.6 | 0.95 | 10.4 | 12.8 | Peroxide Fusion ICP |
| Mg, Magnesium (wt.%) | 0.129 | 0.007 | 0.120 | 0.138 | Peroxide Fusion ICP |
| Mn, Manganese (wt.%) | 0.384 | 0.013 | 0.373 | 0.395 | Peroxide Fusion ICP |
| Mo, Molybdenum (ppm) | 147 | 9 | 140 | 155 | Peroxide Fusion ICP |
| Nd, Neodymium (ppm) | 9.62 | 1.24 | 8.08 | 11.15 | Peroxide Fusion ICP |
| Pb, Lead (wt.%) | 8.08 | 0.192 | 7.92 | 8.25 | Peroxide Fusion ICP |
| Pr, Praseodymium (ppm) | 2.48 | 0.187 | 2.20 | 2.76 | Peroxide Fusion ICP |
| Rb, Rubidium (ppm) | 19.0 | 1.15 | 16.9 | 21.1 | Peroxide Fusion ICP |
| S, Sulphur (wt.%) | 30.03 | 0.742 | 29.34 | 30.72 | Peroxide Fusion ICP |
| Sb, Antimony (ppm) | 7895 | 587 | 7206 | 8584 | Peroxide Fusion ICP |
| Sc, Scandium (ppm) | < 10.0 | IND | IND | IND | Peroxide Fusion ICP |
| Si, Silicon (wt.%) | 1.79 | 0.047 | 1.73 | 1.85 | Peroxide Fusion ICP |
| Sm, Samarium (ppm) | 1.77 | 0.134 | 1.46 | 2.08 | Peroxide Fusion ICP |
| Sr, Strontium (ppm) | 24.2 | 3.4 | 20.4 | 27.9 | Peroxide Fusion ICP |
| Tb, Terbium (ppm) | 0.23 | 0.04 | 0.14 | 0.32 | Peroxide Fusion ICP |
| Te, Tellurium (ppm) | < 5.00 | IND | IND | IND | Peroxide Fusion ICP |
| Th, Thorium (ppm) | 4.53 | 0.54 | 3.97 | 5.09 | Peroxide Fusion ICP |
| Ti, Titanium (wt.%) | 0.031 | 0.003 | 0.028 | 0.035 | Peroxide Fusion ICP |
| Tl, Thallium (ppm) | 12.0 | 1.04 | 11.2 | 12.8 | Peroxide Fusion ICP |
| Tm, Thulium (ppm) | 0.11 | 0.02 | 0.09 | 0.14 | Peroxide Fusion ICP |
| U, Uranium (ppm) | 2.32 | 0.39 | 1.97 | 2.67 | Peroxide Fusion ICP |
| W, Tungsten (ppm) | 4.76 | 0.49 | 3.93 | 5.59 | Peroxide Fusion ICP |
| Y, Yttrium (ppm) | 7.28 | 0.443 | 6.27 | 8.29 | Peroxide Fusion ICP |
| Yb, Ytterbium (ppm) | 0.78 | 0.13 | 0.56 | 1.01 | Peroxide Fusion ICP |
| Zn, Zinc (wt.%) | 18.49 | 0.526 | 18.06 | 18.92 | Peroxide Fusion ICP |
| F, Fluorine (ppm) | 330 | 39 | 249 | 411 | Ion Selective Electrode |
| S, Sulphur (wt.%) | 30.04 | 0.979 | 29.25 | 30.82 | Infrared Combustion |
Ürün Özellikleri
Sertifikalı Referans Değerler
| Analit | Sertifikalı Değer | Belirsizlik (1SD) | %95 Güven Aralığı Alt | %95 Güven Aralığı Üst | Yöntem |
|---|---|---|---|---|---|
| Ce - Cerium (ppm) | 20.0 | - | - | - | 4-Acid Digestion |
| La - Lanthanum (ppm) | 8.45 | - | - | - | 4-Acid Digestion |
| Y - Yttrium (ppm) | 5.98 | - | - | - | 4-Acid Digestion |
SD = Standart Sapma | CL = %95 Güven Limitleri
Yöntemler: AR = Kral Suyu, 4-Acid = 4-Asit Çözünürlük, LBF = Lityum Borat Füzyon, FA/AAS = Ateş Tahlili / AAS, LECO = LECO Yanma Analizi
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