OREAS 712
SKU: 712
OREAS 712 is a primary CRM prepared from gravity-separated fractions of the
Westland Heavy Mineral Sands deposit. The material contains elevated levels of
TiO₂, Fe, and Zr and represents a composite of low-, high-, and
concentrate-grade heavy mineral sands. It is designed for use in the validation
and quality control of methods targeting titanium-, iron-, and zirconium-bearing
minerals in sediment-hosted mineral sands systems.
OREAS 712 has been characterized using the following methods:
Borate Fusion XRF- Majors and some traces
Thermogravimetric LOI at 1000 °C
4-Acid – Full ICP-OES and MS elemental suites
Certified values for applicable analytes are operationally defined for each
method, with results under OREAS ISO 17034 scope of
accreditation.
Specifications
- State: primary
- Matrix: sandstone/ sediments
- Mineralisation: sand placer
- CRM Group: Heavy Mineral Sands (HMS)
Certified Values
| Analyte | Certified Value | 1SD | 95% CL Low | 95% CL High | Method |
|---|---|---|---|---|---|
| TiO2, Titanium dioxide (wt.%) | 12.00 | TBD | TBD | TBD | Borate Fusion XRF |
| Zr, Zirconium (wt.%) | 0.110 | TBD | TBD | TBD | Borate Fusion XRF |
| Fe, Iron (wt.%) | 14.34 | TBD | TBD | TBD | Borate Fusion XRF |
| TREE, Total Rare Earth Elements (wt.%) | 0.084 | TBD | TBD | TBD | Borate Fusion XRF |
Product Specifications
Certified Reference Values
| Analyte | Certified Value | Uncertainty (1SD) | 95% Confidence Low | 95% Confidence High | Method |
|---|
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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