OREAS 243b
رمز المنتج: 243b
OREAS 243b is a high-grade gold certified reference material prepared from a
blend of gold ore and barren greenstone. The gold ore components are sourced
from the Frogs Leg Gold Mine, located approximately 19 km west of Kalgoorlie in
Western Australia, and represent recent production campaigns from this
operation. The barren fraction consists of finely milled Cambrian greenstone
sourced from a quarry around 145 km north of Melbourne, Australia.
OREAS 243b has been characterized using the following methods:
Gold by Pb collection fire assay (25-50g charge weight) with AAS and
ICP-OES finish
Gold by Bi collection fire assay (30 g charge weight) with AAS finish
Gold by PhotonAssay™
Gold by 15-50g aqua regia digestion with ICP-MS and AAS finish
Gold by cyanide leach (20-200g) with AAS or ICP-MS finish
Full ICP-OES and ICP-MS elemental suites by 4-acid (HNO3-HF-HClO4-HCl)
digestion
Full ICP-OES and ICP-MS elemental suites by aqua regia digestion
Certified values for applicable analytes are operationally defined for each
method, with results under OREAS ISO 17034 scope of
accreditation.
Specifications
- State: primary
- Matrix: greenstone
- 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) | 12.40 | TBD | TBD | TBD | Pb Fire Assay |
مواصفات المنتج
القيم المرجعية المعتمدة
| المادة المحللة | القيمة المعتمدة | عدم اليقين (1SD) | حد الثقة الأدنى 95% | حد الثقة الأعلى 95% | الطريقة |
|---|
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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