OREAS 990b
primary
concentrate
volcanic hosted massive sulphide
OREAS 990b
SKU: 990b
OREAS 990b is a copper-gold-silver 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:
Full elemental suites by peroxide fusion with ICP-OES and MS finish;
Full elemental suites by 4-acid digestion with ICP-OES and MS finish;
Total S by IR 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: Concentrates
Certified Values
| Analyte | Certified Value | 1SD | 95% CL Low | 95% CL High | Method |
|---|---|---|---|---|---|
| Cu, Copper (wt.%) | 16.37 | 0.115 | 16.30 | 16.44 | Classical Wet Chemistry |
| Ag, Silver (ppm) | 6741 | 65 | 6708 | 6774 | Pb Fire Assay (Grav) |
| Au, Gold (ppm) | 63.67 | 0.891 | 63.15 | 64.19 | Pb Fire Assay (Grav) |
| Al, Aluminium (wt.%) | 0.576 | 0.010 | 0.572 | 0.581 | Peroxide Fusion ICP |
| As, Arsenic (ppm) | 7797 | 514 | 7469 | 8125 | Peroxide Fusion ICP |
| Be, Beryllium (ppm) | < 1.00 | IND | IND | IND | Peroxide Fusion ICP |
| Bi, Bismuth (ppm) | 49.7 | 2.79 | 47.4 | 52.0 | Peroxide Fusion ICP |
| Ca, Calcium (wt.%) | 0.166 | 0.022 | 0.149 | 0.183 | Peroxide Fusion ICP |
| Cd, Cadmium (ppm) | 580 | 33 | 552 | 608 | Peroxide Fusion ICP |
| Ce, Cerium (ppm) | 12.8 | 0.57 | 12.2 | 13.4 | Peroxide Fusion ICP |
| Cr, Chromium (ppm) | < 100 | IND | IND | IND | Peroxide Fusion ICP |
| Cs, Caesium (ppm) | 1.34 | 0.120 | 1.25 | 1.44 | Peroxide Fusion ICP |
| Cu, Copper (wt.%) | 16.46 | 0.575 | 16.08 | 16.84 | Peroxide Fusion ICP |
| Dy, Dysprosium (ppm) | 0.93 | 0.069 | 0.86 | 1.00 | Peroxide Fusion ICP |
| Er, Erbium (ppm) | 0.47 | 0.06 | 0.44 | 0.50 | Peroxide Fusion ICP |
| Eu, Europium (ppm) | 0.64 | 0.13 | 0.58 | 0.71 | Peroxide Fusion ICP |
| Fe, Iron (wt.%) | 14.78 | 0.404 | 14.55 | 15.00 | Peroxide Fusion ICP |
| Ga, Gallium (ppm) | 5.03 | 0.411 | 4.85 | 5.21 | Peroxide Fusion ICP |
| In, Indium (ppm) | 8.04 | 0.683 | 7.41 | 8.67 | Peroxide Fusion ICP |
| K, Potassium (wt.%) | 0.207 | 0.016 | 0.196 | 0.217 | Peroxide Fusion ICP |
| La, Lanthanum (ppm) | 7.25 | 0.339 | 7.15 | 7.36 | Peroxide Fusion ICP |
| Mg, Magnesium (wt.%) | 0.128 | 0.008 | 0.124 | 0.133 | Peroxide Fusion ICP |
| Mn, Manganese (wt.%) | 0.231 | 0.009 | 0.226 | 0.236 | Peroxide Fusion ICP |
| Mo, Molybdenum (ppm) | 139 | 10 | 131 | 147 | Peroxide Fusion ICP |
| Nd, Neodymium (ppm) | 5.61 | 0.350 | 5.30 | 5.91 | Peroxide Fusion ICP |
| Ni, Nickel (ppm) | < 50 | IND | IND | IND | Peroxide Fusion ICP |
| P, Phosphorus (wt.%) | < 0.010 | IND | IND | IND | Peroxide Fusion ICP |
| Pb, Lead (wt.%) | 8.32 | 0.186 | 8.22 | 8.42 | Peroxide Fusion ICP |
| Pr, Praseodymium (ppm) | 1.48 | 0.087 | 1.41 | 1.55 | Peroxide Fusion ICP |
| Rb, Rubidium (ppm) | 14.5 | 0.80 | 13.9 | 15.1 | Peroxide Fusion ICP |
| S, Sulphur (wt.%) | 29.11 | 0.549 | 28.74 | 29.48 | Peroxide Fusion ICP |
| Sb, Antimony (wt.%) | 2.00 | 0.152 | 1.83 | 2.17 | Peroxide Fusion ICP |
| Se, Selenium (ppm) | < 20.0 | IND | IND | IND | Peroxide Fusion ICP |
| Si, Silicon (wt.%) | 1.74 | 0.052 | 1.71 | 1.77 | Peroxide Fusion ICP |
| Sn, Tin (ppm) | 7.75 | 1.22 | 6.23 | 9.26 | Peroxide Fusion ICP |
| Sr, Strontium (ppm) | 133 | 10 | 125 | 141 | Peroxide Fusion ICP |
| Te, Tellurium (ppm) | < 1.00 | IND | IND | IND | Peroxide Fusion ICP |
| Th, Thorium (ppm) | 3.00 | 0.130 | 2.90 | 3.09 | Peroxide Fusion ICP |
| Ti, Titanium (wt.%) | 0.029 | 0.003 | 0.028 | 0.031 | Peroxide Fusion ICP |
| Tl, Thallium (ppm) | 7.28 | 0.339 | 6.96 | 7.61 | Peroxide Fusion ICP |
| U, Uranium (ppm) | 3.48 | 0.149 | 3.32 | 3.63 | Peroxide Fusion ICP |
| W, Tungsten (ppm) | 6.18 | 1.50 | 4.81 | 7.55 | Peroxide Fusion ICP |
| Y, Yttrium (ppm) | 4.65 | 0.385 | 4.38 | 4.91 | Peroxide Fusion ICP |
| Zn, Zinc (wt.%) | 19.81 | 0.569 | 19.44 | 20.18 | Peroxide Fusion ICP |
| Al, Aluminium (wt.%) | 0.558 | 0.027 | 0.544 | 0.573 | 4-Acid Digestion |
| As, Arsenic (ppm) | 7663 | 502 | 7318 | 8008 | 4-Acid Digestion |
| Be, Beryllium (ppm) | 0.22 | 0.04 | 0.19 | 0.25 | 4-Acid Digestion |
| Bi, Bismuth (ppm) | 50 | 1.5 | 49 | 51 | 4-Acid Digestion |
| Ca, Calcium (wt.%) | 0.165 | 0.008 | 0.160 | 0.169 | 4-Acid Digestion |
| Cd, Cadmium (ppm) | 570 | 21 | 558 | 582 | 4-Acid Digestion |
| Co, Cobalt (ppm) | 2.67 | 0.160 | 2.56 | 2.78 | 4-Acid Digestion |
| Cs, Caesium (ppm) | 1.19 | 0.101 | 1.13 | 1.24 | 4-Acid Digestion |
| Cu, Copper (wt.%) | 16.71 | 0.497 | 16.30 | 17.12 | 4-Acid Digestion |
| Dy, Dysprosium (ppm) | 0.73 | 0.09 | 0.66 | 0.80 | 4-Acid Digestion |
| Er, Erbium (ppm) | 0.39 | 0.06 | 0.34 | 0.45 | 4-Acid Digestion |
| Eu, Europium (ppm) | 0.56 | 0.13 | 0.45 | 0.66 | 4-Acid Digestion |
| Fe, Iron (wt.%) | 14.45 | 0.305 | 14.31 | 14.59 | 4-Acid Digestion |
| Ga, Gallium (ppm) | 4.75 | 0.466 | 4.40 | 5.10 | 4-Acid Digestion |
| Gd, Gadolinium (ppm) | 0.90 | 0.12 | 0.79 | 1.00 | 4-Acid Digestion |
| Hf, Hafnium (ppm) | 0.62 | 0.06 | 0.60 | 0.65 | 4-Acid Digestion |
| In, Indium (ppm) | 7.68 | 0.273 | 7.51 | 7.86 | 4-Acid Digestion |
| K, Potassium (wt.%) | 0.216 | 0.009 | 0.211 | 0.221 | 4-Acid Digestion |
| Li, Lithium (ppm) | 2.19 | 0.26 | 2.00 | 2.37 | 4-Acid Digestion |
| Mg, Magnesium (wt.%) | 0.124 | 0.006 | 0.121 | 0.128 | 4-Acid Digestion |
| Mn, Manganese (wt.%) | 0.228 | 0.008 | 0.224 | 0.232 | 4-Acid Digestion |
| Mo, Molybdenum (ppm) | 131 | 9 | 125 | 136 | 4-Acid Digestion |
| Na, Sodium (wt.%) | 0.031 | 0.003 | 0.029 | 0.033 | 4-Acid Digestion |
| Nb, Niobium (ppm) | 0.89 | 0.14 | 0.79 | 1.00 | 4-Acid Digestion |
| Nd, Neodymium (ppm) | 4.49 | 0.72 | 3.82 | 5.16 | 4-Acid Digestion |
| Ni, Nickel (ppm) | 6.11 | 0.84 | 5.43 | 6.79 | 4-Acid Digestion |
| Pb, Lead (wt.%) | 8.45 | 0.155 | 8.36 | 8.54 | 4-Acid Digestion |
| Pr, Praseodymium (ppm) | 1.08 | 0.26 | 0.83 | 1.32 | 4-Acid Digestion |
| Rb, Rubidium (ppm) | 13.9 | 0.85 | 13.4 | 14.4 | 4-Acid Digestion |
| Re, Rhenium (ppm) | 0.006 | 0.001 | 0.005 | 0.008 | 4-Acid Digestion |
| Sb, Antimony (wt.%) | 1.89 | 0.095 | 1.82 | 1.96 | 4-Acid Digestion |
| Sc, Scandium (ppm) | 0.86 | 0.10 | 0.74 | 0.98 | 4-Acid Digestion |
| Sm, Samarium (ppm) | 1.10 | 0.13 | 0.97 | 1.23 | 4-Acid Digestion |
| Sn, Tin (ppm) | 5.51 | 0.377 | 5.19 | 5.84 | 4-Acid Digestion |
| Tb, Terbium (ppm) | 0.12 | 0.03 | 0.11 | 0.14 | 4-Acid Digestion |
| Te, Tellurium (ppm) | < 0.50 | IND | IND | IND | 4-Acid Digestion |
| Ti, Titanium (wt.%) | 0.024 | 0.003 | 0.022 | 0.026 | 4-Acid Digestion |
| Tl, Thallium (ppm) | 7.32 | 0.262 | 7.15 | 7.50 | 4-Acid Digestion |
| Tm, Thulium (ppm) | < 0.10 | IND | IND | IND | 4-Acid Digestion |
| U, Uranium (ppm) | 3.45 | 0.248 | 3.30 | 3.60 | 4-Acid Digestion |
| V, Vanadium (ppm) | 6.25 | 1.99 | 4.82 | 7.68 | 4-Acid Digestion |
| W, Tungsten (ppm) | 5.43 | 0.93 | 4.71 | 6.15 | 4-Acid Digestion |
| Y, Yttrium (ppm) | 3.78 | 0.57 | 3.43 | 4.13 | 4-Acid Digestion |
| Yb, Ytterbium (ppm) | 0.39 | 0.05 | 0.35 | 0.44 | 4-Acid Digestion |
| Zn, Zinc (wt.%) | 19.97 | 0.362 | 19.74 | 20.20 | 4-Acid Digestion |
| Zr, Zirconium (ppm) | 20.8 | 1.65 | 19.8 | 21.8 | 4-Acid Digestion |
| S, Sulphur (wt.%) | 29.31 | 0.604 | 28.97 | 29.65 | Infrared Combustion |
Product Specifications
State
primary
Matrix
concentrate
Mineralisation
volcanic hosted massive sulphide
Availability
available
Certified Reference Values
| Analyte | Certified Value | Uncertainty (1SD) | 95% Confidence Low | 95% Confidence High | Method |
|---|---|---|---|---|---|
| Dy - Dysprosium (ppm) | 0.73 | - | - | - | 4-Acid Digestion |
| Er - Erbium (ppm) | 0.39 | - | - | - | 4-Acid Digestion |
| Eu - Europium (ppm) | 0.56 | - | - | - | 4-Acid Digestion |
| Gd - Gadolinium (ppm) | 0.90 | - | - | - | 4-Acid Digestion |
| Nd - Neodymium (ppm) | 4.49 | - | - | - | 4-Acid Digestion |
| Pr - Praseodymium (ppm) | 1.08 | - | - | - | 4-Acid Digestion |
| Sm - Samarium (ppm) | 1.10 | - | - | - | 4-Acid Digestion |
| Tb - Terbium (ppm) | 0.12 | - | - | - | 4-Acid Digestion |
| Y - Yttrium (ppm) | 3.78 | - | - | - | 4-Acid Digestion |
SD = Standard Deviation | CL = 95% Confidence Limits
Methods: AR = Aqua Regia, 4-Acid = 4-Acid Digestion, LBF = Lithium Borate Fusion, FA/AAS = Fire Assay with Atomic Absorption, LECO = LECO Combustion Analysis
Need Assistance?
Contact our technical team for custom orders, bulk pricing, or analytical support.
Contact Us