OREAS 260
رمز المنتج: 260
OREAS 260 was prepared from a blend of gold-bearing oxide ore from one of the
Sepon gold deposits and barren mudstone sourced from a quarry east of Melbourne,
Australia. The Sepon Mineral District stratigraphy comprises Devonian to
Carboniferous aged continental fluvial and shallow to deep marine sediments
deposited in a half graben basin. Gold mineralisation is localised in
structural and stratigraphic fluid traps similar in style to the sediment-hosted
gold deposits of the Carlin Trend, Nevada, USA. Mineralisation is finely
disseminated and closely associated with decalcification and variable silica
replacement of calcareous rocks along structures and at lithological
contacts.
The Sepon deposit is located approximately 40 kilometres north of the town of
Sepon, in Savannakhet province of south-central Laos. OREAS 260 is one of a
suite of four oxide gold CRMs ranging in gold content from 16 to
214ppb.
Specifications
- State: oxide
- Matrix: mudstone
- Mineralisation: Carlin style
- CRM Group: Au, Au only
Certified Values
| Analyte | Certified Value | 1SD | 95% CL Low | 95% CL High | Method |
|---|---|---|---|---|---|
| Au, Gold (ppb) | 16.0 | 1.84 | 15.4 | 16.7 | Pb Fire Assay |
| Au, Gold (ppb) | 13.8 | 1.67 | 13.2 | 14.3 | Aqua Regia Digestion (sample weights 10-50g) |
| Cu, Copper (ppm) | 46.5 | 2.29 | 45.6 | 47.3 | Aqua Regia Digestion |
| Ag, Silver (ppm) | 0.146 | 0.013 | 0.139 | 0.152 | Aqua Regia Digestion |
| Al, Aluminium (wt.%) | 1.33 | 0.14 | 1.26 | 1.39 | Aqua Regia Digestion |
| As, Arsenic (ppm) | 12.5 | 1.5 | 11.9 | 13.1 | Aqua Regia Digestion |
| Ba, Barium (ppm) | 151 | 12 | 145 | 157 | Aqua Regia Digestion |
| Be, Beryllium (ppm) | 1.24 | 0.099 | 1.20 | 1.28 | Aqua Regia Digestion |
| Bi, Bismuth (ppm) | 0.54 | 0.030 | 0.53 | 0.56 | Aqua Regia Digestion |
| Ca, Calcium (wt.%) | 0.885 | 0.047 | 0.867 | 0.904 | Aqua Regia Digestion |
| Cd, Cadmium (ppm) | 0.21 | 0.017 | 0.21 | 0.22 | Aqua Regia Digestion |
| Co, Cobalt (ppm) | 32.1 | 1.38 | 31.6 | 32.7 | Aqua Regia Digestion |
| Cr, Chromium (ppm) | 49.2 | 4.90 | 47.2 | 51.2 | Aqua Regia Digestion |
| Dy, Dysprosium (ppm) | 2.64 | 0.34 | 2.35 | 2.93 | Aqua Regia Digestion |
| Er, Erbium (ppm) | 1.22 | 0.096 | 1.14 | 1.31 | Aqua Regia Digestion |
| Eu, Europium (ppm) | 0.88 | 0.11 | 0.79 | 0.97 | Aqua Regia Digestion |
| Fe, Iron (wt.%) | 3.73 | 0.161 | 3.67 | 3.79 | Aqua Regia Digestion |
| Ga, Gallium (ppm) | 5.05 | 0.71 | 4.70 | 5.40 | Aqua Regia Digestion |
| Gd, Gadolinium (ppm) | 4.04 | 0.64 | 3.48 | 4.59 | Aqua Regia Digestion |
| Ho, Holmium (ppm) | 0.44 | 0.05 | 0.39 | 0.48 | Aqua Regia Digestion |
| In, Indium (ppm) | 0.027 | 0.005 | 0.025 | 0.029 | Aqua Regia Digestion |
| K, Potassium (wt.%) | 0.285 | 0.055 | 0.261 | 0.309 | Aqua Regia Digestion |
| Li, Lithium (ppm) | 21.5 | 1.29 | 21.0 | 22.1 | Aqua Regia Digestion |
| Lu, Lutetium (ppm) | 0.14 | 0.006 | 0.14 | 0.15 | Aqua Regia Digestion |
| Mg, Magnesium (wt.%) | 0.593 | 0.024 | 0.583 | 0.603 | Aqua Regia Digestion |
| Mn, Manganese (wt.%) | 0.045 | 0.003 | 0.044 | 0.046 | Aqua Regia Digestion |
| Mo, Molybdenum (ppm) | 0.43 | 0.029 | 0.41 | 0.44 | Aqua Regia Digestion |
| Na, Sodium (wt.%) | 0.082 | 0.006 | 0.079 | 0.084 | Aqua Regia Digestion |
| Ni, Nickel (ppm) | 75 | 2.7 | 74 | 76 | Aqua Regia Digestion |
| P, Phosphorus (wt.%) | 0.040 | 0.002 | 0.039 | 0.041 | Aqua Regia Digestion |
| Pb, Lead (ppm) | 30.7 | 1.96 | 29.9 | 31.5 | Aqua Regia Digestion |
| S, Sulphur (wt.%) | 0.077 | 0.004 | 0.076 | 0.079 | Aqua Regia Digestion |
| Sb, Antimony (ppm) | 1.32 | 0.17 | 1.24 | 1.39 | Aqua Regia Digestion |
| Sc, Scandium (ppm) | 3.39 | 0.53 | 3.16 | 3.62 | Aqua Regia Digestion |
| Sm, Samarium (ppm) | 4.80 | 0.90 | 4.01 | 5.59 | Aqua Regia Digestion |
| Sr, Strontium (ppm) | 14.8 | 1.22 | 14.2 | 15.3 | Aqua Regia Digestion |
| Tb, Terbium (ppm) | 0.52 | 0.07 | 0.47 | 0.57 | Aqua Regia Digestion |
| Te, Tellurium (ppm) | 0.081 | 0.016 | 0.074 | 0.088 | Aqua Regia Digestion |
| Th, Thorium (ppm) | 11.3 | 1.2 | 10.8 | 11.9 | Aqua Regia Digestion |
| Tl, Thallium (ppm) | 0.22 | 0.04 | 0.20 | 0.23 | Aqua Regia Digestion |
| Tm, Thulium (ppm) | 0.16 | 0.03 | 0.13 | 0.20 | Aqua Regia Digestion |
| U, Uranium (ppm) | 1.29 | 0.17 | 1.21 | 1.37 | Aqua Regia Digestion |
| V, Vanadium (ppm) | 22.0 | 2.4 | 21.0 | 23.1 | Aqua Regia Digestion |
| W, Tungsten (ppm) | 0.063 | 0.007 | 0.059 | 0.067 | Aqua Regia Digestion |
| Y, Yttrium (ppm) | 11.7 | 1.2 | 11.2 | 12.3 | Aqua Regia Digestion |
| Yb, Ytterbium (ppm) | 0.99 | 0.097 | 0.93 | 1.05 | Aqua Regia Digestion |
| Zn, Zinc (ppm) | 125 | 6 | 123 | 128 | Aqua Regia Digestion |
مواصفات المنتج
القيم المرجعية المعتمدة
| المادة المحللة | القيمة المعتمدة | عدم اليقين (1SD) | حد الثقة الأدنى 95% | حد الثقة الأعلى 95% | الطريقة |
|---|---|---|---|---|---|
| Ag - Silver (ppm) | 0.146 | - | - | - | Aqua Regia |
| As - Arsenic (ppm) | 12.5 | - | - | - | Aqua Regia |
| Bi - Bismuth (ppm) | 0.54 | - | - | - | Aqua Regia |
| Cd - Cadmium (ppm) | 0.21 | - | - | - | Aqua Regia |
| Co - Cobalt (ppm) | 32.1 | - | - | - | Aqua Regia |
| Cu - Copper (ppm) | 46.5 | - | - | - | Aqua Regia |
| Mo - Molybdenum (ppm) | 0.43 | - | - | - | Aqua Regia |
| Ni - Nickel (ppm) | 75 | - | - | - | Aqua Regia |
| Pb - Lead (ppm) | 30.7 | - | - | - | Aqua Regia |
| Sb - Antimony (ppm) | 1.32 | - | - | - | Aqua Regia |
| Te - Tellurium (ppm) | 0.081 | - | - | - | Aqua Regia |
| Tl - Thallium (ppm) | 0.22 | - | - | - | Aqua Regia |
| Zn - Zinc (ppm) | 125 | - | - | - | Aqua Regia |
SD = الانحراف المعياري | CL = حدود الثقة 95%
الطرق: AR = الماء الملكي، 4-Acid = هضم رباعي الحمض، LBF = صهر بورات الليثيوم، FA/AAS = فحص النار / AAS، LECO = تحليل احتراق LECO
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