OREAS 247
primary
metasediments
orogenic lode gold
OREAS 247
SKU: 247
OREAS 247 was prepared from a blend of high grade gold-bearing ore and barren
metasediments. The gold ore was sourced from the central Victorian goldfields
and is hosted within a metamorphosed turbidite sequence of interbedded
sandstones, siltstones and shales. Gold mineralisation mainly occurs within
disseminated arsenopyrite and pyrite ± stibnite-quartz zones.
Thirty-five commercial analytical laboratories participated in the program to
certify:
Gold by fire assay;
Gold by x-ray PhotonAssay with recommended gross mass 380-410 g (12
Chrysos PhotonAssay units at 7 laboratories with two rounds of data reported
from each unit);
Full ICP-OES and ICP-MS elemental suites by 4-acid
digestion.
Specifications
- State: primary
- Matrix: metasediments
- Mineralisation: orogenic lode gold
- CRM Group: Au >1 ppm, Au only
Certified Values
| Analyte | Certified Value | 1SD | 95% CL Low | 95% CL High | Method |
|---|---|---|---|---|---|
| Au, Gold (ppm) | 42.96 | 0.900 | 42.68 | 43.24 | Pb Fire Assay |
| Au, Gold (ppm) | 43.77 | 0.878 | 43.19 | 44.34 | PhotonAssay |
| Ag, Silver (ppm) | 2.16 | 0.121 | 2.07 | 2.25 | 4-Acid Digestion |
| Al, Aluminium (wt.%) | 6.08 | 0.250 | 5.90 | 6.26 | 4-Acid Digestion |
| As, Arsenic (ppm) | 3514 | 173 | 3383 | 3645 | 4-Acid Digestion |
| Ba, Barium (ppm) | 550 | 15 | 537 | 564 | 4-Acid Digestion |
| Be, Beryllium (ppm) | 2.23 | 0.180 | 2.11 | 2.34 | 4-Acid Digestion |
| Bi, Bismuth (ppm) | 0.58 | 0.025 | 0.56 | 0.61 | 4-Acid Digestion |
| Ca, Calcium (wt.%) | 0.826 | 0.029 | 0.803 | 0.849 | 4-Acid Digestion |
| Cd, Cadmium (ppm) | 0.065 | 0.015 | 0.050 | 0.081 | 4-Acid Digestion |
| Ce, Cerium (ppm) | 67 | 3.9 | 64 | 69 | 4-Acid Digestion |
| Co, Cobalt (ppm) | 12.0 | 0.41 | 11.6 | 12.4 | 4-Acid Digestion |
| Cr, Chromium (ppm) | 97 | 8.5 | 91 | 103 | 4-Acid Digestion |
| Cs, Caesium (ppm) | 8.49 | 0.453 | 8.15 | 8.82 | 4-Acid Digestion |
| Cu, Copper (ppm) | 42.2 | 2.71 | 40.6 | 43.8 | 4-Acid Digestion |
| Dy, Dysprosium (ppm) | 2.73 | 0.35 | 2.46 | 3.00 | 4-Acid Digestion |
| Er, Erbium (ppm) | 1.49 | 0.20 | 1.33 | 1.66 | 4-Acid Digestion |
| Eu, Europium (ppm) | 0.96 | 0.072 | 0.87 | 1.05 | 4-Acid Digestion |
| Fe, Iron (wt.%) | 3.32 | 0.105 | 3.25 | 3.39 | 4-Acid Digestion |
| Ga, Gallium (ppm) | 16.3 | 1.16 | 15.6 | 17.0 | 4-Acid Digestion |
| Gd, Gadolinium (ppm) | 4.23 | 0.45 | 3.90 | 4.57 | 4-Acid Digestion |
| Hf, Hafnium (ppm) | 3.57 | 0.314 | 3.32 | 3.82 | 4-Acid Digestion |
| Ho, Holmium (ppm) | 0.54 | 0.07 | 0.46 | 0.61 | 4-Acid Digestion |
| In, Indium (ppm) | 0.058 | 0.005 | 0.050 | 0.065 | 4-Acid Digestion |
| K, Potassium (wt.%) | 2.45 | 0.103 | 2.37 | 2.53 | 4-Acid Digestion |
| La, Lanthanum (ppm) | 33.1 | 2.22 | 31.7 | 34.4 | 4-Acid Digestion |
| Li, Lithium (ppm) | 31.8 | 1.37 | 30.7 | 32.8 | 4-Acid Digestion |
| Lu, Lutetium (ppm) | 0.24 | 0.03 | 0.21 | 0.27 | 4-Acid Digestion |
| Mg, Magnesium (wt.%) | 1.22 | 0.044 | 1.19 | 1.25 | 4-Acid Digestion |
| Mn, Manganese (wt.%) | 0.036 | 0.001 | 0.034 | 0.037 | 4-Acid Digestion |
| Mo, Molybdenum (ppm) | 1.76 | 0.139 | 1.66 | 1.86 | 4-Acid Digestion |
| Na, Sodium (wt.%) | 0.499 | 0.037 | 0.479 | 0.518 | 4-Acid Digestion |
| Nb, Niobium (ppm) | 11.7 | 1.4 | 10.9 | 12.6 | 4-Acid Digestion |
| Nd, Neodymium (ppm) | 29.3 | 1.69 | 28.0 | 30.6 | 4-Acid Digestion |
| Ni, Nickel (ppm) | 45.9 | 2.73 | 44.0 | 47.7 | 4-Acid Digestion |
| P, Phosphorus (wt.%) | 0.048 | 0.003 | 0.047 | 0.050 | 4-Acid Digestion |
| Pb, Lead (ppm) | 31.9 | 2.15 | 30.5 | 33.3 | 4-Acid Digestion |
| Pr, Praseodymium (ppm) | 7.90 | 0.541 | 7.47 | 8.34 | 4-Acid Digestion |
| Rb, Rubidium (ppm) | 144 | 9 | 136 | 151 | 4-Acid Digestion |
| Re, Rhenium (ppm) | < 0.002 | IND | IND | IND | 4-Acid Digestion |
| S, Sulphur (wt.%) | 0.714 | 0.039 | 0.681 | 0.747 | 4-Acid Digestion |
| Sb, Antimony (ppm) | 3295 | 115 | 3196 | 3394 | 4-Acid Digestion |
| Sc, Scandium (ppm) | 11.4 | 0.80 | 10.7 | 12.0 | 4-Acid Digestion |
| Sm, Samarium (ppm) | 5.50 | 0.401 | 5.21 | 5.78 | 4-Acid Digestion |
| Sn, Tin (ppm) | 3.31 | 0.262 | 3.08 | 3.55 | 4-Acid Digestion |
| Sr, Strontium (ppm) | 96 | 4.2 | 93 | 99 | 4-Acid Digestion |
| Ta, Tantalum (ppm) | 0.92 | 0.063 | 0.85 | 0.99 | 4-Acid Digestion |
| Tb, Terbium (ppm) | 0.53 | 0.026 | 0.49 | 0.56 | 4-Acid Digestion |
| Th, Thorium (ppm) | 12.6 | 0.53 | 12.1 | 13.1 | 4-Acid Digestion |
| Ti, Titanium (wt.%) | 0.390 | 0.025 | 0.373 | 0.406 | 4-Acid Digestion |
| Tl, Thallium (ppm) | 0.80 | 0.052 | 0.75 | 0.85 | 4-Acid Digestion |
| Tm, Thulium (ppm) | 0.23 | 0.03 | 0.19 | 0.27 | 4-Acid Digestion |
| U, Uranium (ppm) | 2.53 | 0.115 | 2.41 | 2.65 | 4-Acid Digestion |
| V, Vanadium (ppm) | 82 | 4.1 | 80 | 84 | 4-Acid Digestion |
| W, Tungsten (ppm) | 7.88 | 1.32 | 7.10 | 8.66 | 4-Acid Digestion |
| Y, Yttrium (ppm) | 13.1 | 1.8 | 12.1 | 14.1 | 4-Acid Digestion |
| Yb, Ytterbium (ppm) | 1.54 | 0.19 | 1.40 | 1.68 | 4-Acid Digestion |
| Zn, Zinc (ppm) | 86 | 3.7 | 83 | 89 | 4-Acid Digestion |
| Zr, Zirconium (ppm) | 125 | 13 | 118 | 132 | 4-Acid Digestion |
Product Specifications
State
primary
Matrix
metasediments
Mineralisation
orogenic lode gold
Availability
available
Certified Reference Values
| Analyte | Certified Value | Uncertainty (1SD) | 95% Confidence Low | 95% Confidence High | Method |
|---|---|---|---|---|---|
| Ce - Cerium (ppm) | 67 | - | - | - | 4-Acid Digestion |
| Dy - Dysprosium (ppm) | 2.73 | - | - | - | 4-Acid Digestion |
| Er - Erbium (ppm) | 1.49 | - | - | - | 4-Acid Digestion |
| Eu - Europium (ppm) | 0.96 | - | - | - | 4-Acid Digestion |
| Gd - Gadolinium (ppm) | 4.23 | - | - | - | 4-Acid Digestion |
| Ho - Holmium (ppm) | 0.54 | - | - | - | 4-Acid Digestion |
| La - Lanthanum (ppm) | 33.1 | - | - | - | 4-Acid Digestion |
| Lu - Lutetium (ppm) | 0.24 | - | - | - | 4-Acid Digestion |
| Nd - Neodymium (ppm) | 29.3 | - | - | - | 4-Acid Digestion |
| Pr - Praseodymium (ppm) | 7.90 | - | - | - | 4-Acid Digestion |
| Sm - Samarium (ppm) | 5.50 | - | - | - | 4-Acid Digestion |
| Tb - Terbium (ppm) | 0.53 | - | - | - | 4-Acid Digestion |
| Tm - Thulium (ppm) | 0.23 | - | - | - | 4-Acid Digestion |
| Y - Yttrium (ppm) | 13.1 | - | - | - | 4-Acid Digestion |
| Yb - Ytterbium (ppm) | 1.54 | - | - | - | 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
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