OREAS 24d
SKU: 24d
OREAS 24d was prepared from olivine tholeiitic basalt from the Quaternary
Newer Volcanics Province, Victoria, Australia. It is characterised by very low
background gold of less than 1 parts per billion. Ten commercial analytical
laboratories participated in the program to characterise (in addition to gold by
fire assay) Ag, Al, As, Ba, Be, Bi, Ca, Cd, Ce, Co, Cr, Cs, Cu, Fe, Ga, Hf, In,
K, La, Li, Lu, Mg, Mn, Mo, Na, Nb, Ni, P, Pb, Rb, S, Sc, Sn, Sr, Ta, Tb, Th, Ti,
U, V, W, Y, Zn and Zr by 4-acid digestion with ICP-OES or ICP-MS
finish.
Specifications
- State: primary
- Matrix: basalt
- Mineralisation: barren
- CRM Group: Blank/lithogeochem/low-level
Certified Values
| Analyte | Certified Value | 1SD | 95% CL Low | 95% CL High | Method |
|---|---|---|---|---|---|
| Au, Gold (ppb) | < 1 | IND | IND | IND | Pb Fire Assay |
| Cu, Copper (ppm) | 43.2 | 2.29 | 41.6 | 44.8 | 4-Acid Digestion |
| Ni, Nickel (ppm) | 137 | 7 | 132 | 141 | 4-Acid Digestion |
| Ag, Silver (ppm) | < 0.200 | IND | IND | IND | 4-Acid Digestion |
| Al, Aluminium (wt.%) | 7.77 | 0.212 | 7.61 | 7.93 | 4-Acid Digestion |
| As, Arsenic (ppm) | 1.35 | 0.33 | 1.13 | 1.57 | 4-Acid Digestion |
| Ba, Barium (ppm) | 536 | 16 | 526 | 547 | 4-Acid Digestion |
| Be, Beryllium (ppm) | 2.14 | 0.143 | 2.06 | 2.21 | 4-Acid Digestion |
| Bi, Bismuth (ppm) | 0.030 | 0.007 | 0.025 | 0.034 | 4-Acid Digestion |
| Ca, Calcium (wt.%) | 5.62 | 0.251 | 5.44 | 5.80 | 4-Acid Digestion |
| Cd, Cadmium (ppm) | 0.12 | 0.02 | 0.10 | 0.14 | 4-Acid Digestion |
| Ce, Cerium (ppm) | 59 | 1.5 | 58 | 60 | 4-Acid Digestion |
| Co, Cobalt (ppm) | 44.2 | 2.42 | 42.5 | 46.0 | 4-Acid Digestion |
| Cr, Chromium (ppm) | 147 | 21 | 131 | 163 | 4-Acid Digestion |
| Cs, Caesium (ppm) | 1.18 | 0.066 | 1.13 | 1.22 | 4-Acid Digestion |
| Fe, Iron (wt.%) | 7.97 | 0.381 | 7.70 | 8.24 | 4-Acid Digestion |
| Ga, Gallium (ppm) | 22.1 | 0.84 | 21.4 | 22.7 | 4-Acid Digestion |
| Hf, Hafnium (ppm) | 4.70 | 0.325 | 4.44 | 4.97 | 4-Acid Digestion |
| In, Indium (ppm) | 0.074 | 0.011 | 0.071 | 0.076 | 4-Acid Digestion |
| K, Potassium (wt.%) | 1.69 | 0.059 | 1.65 | 1.73 | 4-Acid Digestion |
| La, Lanthanum (ppm) | 29.1 | 2.01 | 27.7 | 30.5 | 4-Acid Digestion |
| Li, Lithium (ppm) | 10.8 | 0.65 | 10.2 | 11.3 | 4-Acid Digestion |
| Lu, Lutetium (ppm) | 0.23 | 0.03 | 0.20 | 0.26 | 4-Acid Digestion |
| Mg, Magnesium (wt.%) | 4.56 | 0.157 | 4.45 | 4.67 | 4-Acid Digestion |
| Mn, Manganese (wt.%) | 0.115 | 0.005 | 0.112 | 0.119 | 4-Acid Digestion |
| Mo, Molybdenum (ppm) | 4.46 | 0.350 | 4.15 | 4.78 | 4-Acid Digestion |
| Na, Sodium (wt.%) | 2.33 | 0.109 | 2.25 | 2.41 | 4-Acid Digestion |
| Nb, Niobium (ppm) | 44.6 | 4.14 | 41.0 | 48.2 | 4-Acid Digestion |
| P, Phosphorus (wt.%) | 0.252 | 0.016 | 0.241 | 0.264 | 4-Acid Digestion |
| Pb, Lead (ppm) | 3.56 | 0.44 | 3.24 | 3.87 | 4-Acid Digestion |
| Rb, Rubidium (ppm) | 37.2 | 4.2 | 34.4 | 40.1 | 4-Acid Digestion |
| S, Sulphur (wt.%) | 0.042 | 0.004 | 0.038 | 0.046 | 4-Acid Digestion |
| Sc, Scandium (ppm) | 20.0 | 1.11 | 19.2 | 20.7 | 4-Acid Digestion |
| Sn, Tin (ppm) | 1.89 | 0.088 | 1.82 | 1.95 | 4-Acid Digestion |
| Sr, Strontium (ppm) | 748 | 37 | 722 | 775 | 4-Acid Digestion |
| Ta, Tantalum (ppm) | 3.01 | 0.240 | 2.80 | 3.22 | 4-Acid Digestion |
| Tb, Terbium (ppm) | 0.79 | 0.044 | 0.75 | 0.83 | 4-Acid Digestion |
| Th, Thorium (ppm) | 3.78 | 0.326 | 3.53 | 4.03 | 4-Acid Digestion |
| Ti, Titanium (wt.%) | 1.22 | 0.053 | 1.17 | 1.26 | 4-Acid Digestion |
| Tl, Thallium (ppm) | 0.12 | 0.02 | 0.11 | 0.14 | 4-Acid Digestion |
| U, Uranium (ppm) | 1.40 | 0.089 | 1.34 | 1.46 | 4-Acid Digestion |
| V, Vanadium (ppm) | 201 | 7 | 197 | 206 | 4-Acid Digestion |
| Y, Yttrium (ppm) | 20.4 | 0.90 | 19.8 | 21.1 | 4-Acid Digestion |
| Zn, Zinc (ppm) | 104 | 7 | 99 | 109 | 4-Acid Digestion |
| Zr, Zirconium (ppm) | 205 | 6 | 201 | 209 | 4-Acid Digestion |
Product Specifications
Certified Reference Values
| Analyte | Certified Value | Uncertainty (1SD) | 95% Confidence Low | 95% Confidence High | Method |
|---|---|---|---|---|---|
| Ce - Cerium (ppm) | 59 | - | - | - | 4-Acid Digestion |
| La - Lanthanum (ppm) | 29.1 | - | - | - | 4-Acid Digestion |
| Lu - Lutetium (ppm) | 0.23 | - | - | - | 4-Acid Digestion |
| Tb - Terbium (ppm) | 0.79 | - | - | - | 4-Acid Digestion |
| Y - Yttrium (ppm) | 20.4 | - | - | - | 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