OREAS 26a is a basalt blank chip (nominal minus 6 mm) certified reference material. The material was sourced from a quarry containing fresh olivine tholeiite (Newer Volcanics Province), near Melbourne (Victoria), Australia. It has been certified for:
Au via 25-40g fire assay with ICP-MS (5 labs) or ICP-OES (4 labs) finish
- Ba, Cd, Co, Cu, Fe, Mo, Ni, Pb, Sn, Th, U, W and Zn via four acid digestion (HNO3-HClO4-HCl-HF) with ICP-OES and ICP-MS finish (10 labs)
| CRM Code |
Principle Certified Values |
State |
Matrix |
Mineralization |
| OREAS 26a |
Au <1ppb |
Cu 50 ppm |
Pb 2.73ppm |
primary |
basalt |
barren |