OREAS 320
Артикул: 320
OREAS 320 is a certified reference material produced from a blend of
zinc-lead-silver ores and concentrates sourced from several Australian mining
operations. Key contributors include Zn-Pb-Ag ores from the George Fisher Mine
at Mount Isa (Glencore), Mt Isa and Dugald River zinc concentrates, and a
high-grade lead concentrate from the Rosebery Mine in Tasmania. These materials
represent diverse mineralisation styles, including SEDEX-type deposits hosted
within carbonaceous dolomitic sediments of the Urquhart Shale Formation in NW
Queensland and volcanogenic massive sulphide (VMS) mineralisation at Rosebery. A
minor proportion of barren black slate was included to assist in balancing
matrix composition, and a specially prepared silver-rich blend—produced by
combining silver granules with rhyodacite, granite, and quartz sand—was used to
elevate the silver content.
OREAS 320 has been characterized using the following methods:
Major elements by borate/ oxidising fusion with XRF finish
LOI at 1000 °C using a muffle furnace or thermogravimetric analyser (TGA)
Full ICP-OES and MS elemental suites by peroxide fusion
Full ICP-OES and MS elemental suites by 4-acid (HCl-HNO3-HF-HClO4)
digestion
Full ICP-OES and MS elemental suites by aqua regia digestion
Total C and Total S by infrared combustion furnace
Certified values for applicable analytes are operationally defined for each
method, with results under OREAS ISO 17034 scope of
accreditation.
Specifications
- State: primary
- Matrix: sulphidic graphitic slate
- Mineralisation: SEDEX
- CRM Group: Zn-Pb-Ag sulphide ore
Certified Values
| Analyte | Certified Value | 1SD | 95% CL Low | 95% CL High | Method |
|---|---|---|---|---|---|
| Zn, Zinc (wt.%) | 17.42 | TBD | TBD | TBD | 4-Acid Digestion |
| Pb, Lead (wt.%) | 12.07 | TBD | TBD | TBD | 4-Acid Digestion |
| S, Sulphur (wt.%) | 17.56 | TBD | TBD | TBD | 4-Acid Digestion |
| Ag, Silver (ppm) | 233 | TBD | TBD | TBD | 4-Acid Digestion |
| MgO, Magnesium oxide (wt.%) | 5.18 | TBD | TBD | TBD | Borate Fusion XRF |
| Cu, Copper (wt.%) | 0.870 | TBD | TBD | TBD | 4-Acid Digestion |
| Ca, Calcium (wt.%) | 1.33 | TBD | TBD | TBD | 4-Acid Digestion |
Характеристики продукта
Сертифицированные справочные значения
| Аналит | Сертифицированное значение | Неопределённость (1SD) | 95% доверительный нижний | 95% доверительный верхний | Метод |
|---|
SD = стандартное отклонение | CL = 95% доверительные пределы
Методы: AR = царская водка, 4-Acid = четырёхкислотное разложение, LBF = сплавление с боратом лития, FA/AAS = пробирный анализ / AAS, LECO = анализ горения LECO
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