OREAS 38
SKU: 38
OREAS 38 is a high grade zinc ore matrix-matched certified reference material
(MMCRM) prepared by Ore Research and Exploration. It is one of 3 MMCRM’s sourced
from the Gamsberg Zn deposit located in the Northern Cape Province of South
Africa, approximately 20km west of the Black Mountain mine. Gamsberg is a
stratiform base metal Broken Hill Style (BHS) deposit located in the
mid-proterozoic Bushmanland Province of the Namaqualand Metamorphic Complex
(NMC) of South Africa. The NMC is a highly deformed and metamorphosed
supracrustal succession of dominantly pelitic schists and quartzites, deposited
on a regionally extensive �2000 Ma basement (Rozendal & Stalder, 2001).
The stratiform ores have a close spatial and genetic association with
metamorphosed chemical sediments including manganiferous iron formations,
quartz-garnet rocks (coticules), Ca-Mn marbles and barite (Rozendal &
Stalder, 2001).
Specifications
- State: primary
- Matrix: metasediment/sulphide
- Mineralisation: Broken Hill Type
- CRM Group: Zn-Pb-Ag sulphide ore
Certified Values
| Analyte | Certified Value | 1SD | 95% CL Low | 95% CL High | Method |
|---|---|---|---|---|---|
| Zn, Zinc (wt.%) | 10.04 | 0.140 | 9.89 | 10.19 | 3-Acid Digestion (no HF) |
| Pb, Lead (wt.%) | 0.592 | 0.018 | 0.578 | 0.605 | 3-Acid Digestion (no HF) |
| Ag, Silver (ppm) | 5.49 | 0.420 | 5.23 | 5.75 | 3-Acid Digestion (no HF) |
| As, Arsenic (ppm) | 298 | 17 | 289 | 307 | 3-Acid Digestion (no HF) |
| Cu, Copper (ppm) | 111 | 5 | 107 | 116 | 3-Acid Digestion (no HF) |
| Fe, Iron (wt.%) | 21.28 | 0.420 | 20.97 | 21.59 | 3-Acid Digestion (no HF) |
| Mn, Manganese (wt.%) | 1.37 | 0.040 | 1.27 | 1.46 | 3-Acid Digestion (no HF) |
| Tl, Thallium (ppm) | 64 | 5.5 | 48 | 79 | 3-Acid Digestion (no HF) |
| Ag, Silver (ppm) | ~5.00 | Peroxide Fusion ICP | |||
| As, Arsenic (ppm) | 300 | 26 | 258 | 342 | Peroxide Fusion ICP |
| Cu, Copper (ppm) | 108 | 9 | 99 | 118 | Peroxide Fusion ICP |
| Fe, Iron (wt.%) | 20.98 | 0.840 | 20.31 | 21.66 | Peroxide Fusion ICP |
| Mn, Manganese (wt.%) | 1.57 | 0.040 | 1.51 | 1.62 | Peroxide Fusion ICP |
| Pb, Lead (wt.%) | 0.560 | 0.010 | 0.548 | 0.573 | Peroxide Fusion ICP |
| Tl, Thallium (ppm) | 124 | 5 | 101 | 146 | Peroxide Fusion ICP |
| Zn, Zinc (wt.%) | 9.99 | 0.200 | 9.85 | 10.12 | Peroxide Fusion ICP |
| S, Sulphur (wt.%) | 22.32 | 0.340 | 21.85 | 22.80 | Infrared Combustion |
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
Need Assistance?
Contact our technical team for custom orders, bulk pricing, or analytical support.
Contact Us