OREAS 354 is a certified reference material (CRM) sourced from zinc sulphide concentrate samples taken from the Dugald River metallurgical plant. The Dugald River deposit is located in the Mt Isa Inlier, ~65km north-west of Cloncurry in north-west Queensland, Australia. The mineralisation style is dominated by sphalerite and galena with a gangue of graphitic slate, pyrrhotite and pyrite. The deposit is hosted within a sequence of upper greenschist to amphibolite facies metamorphic rocks consisting quartzite, schists, slates and dolomite.
Thirteen umpire laboratories determined Zinc in 3 trials by classical wet chemistry methods. Twelve geoanalytical laboratories also participated in the analytical program.
| CRM Code |
Principle Certified Values |
State |
Matrix |
Mineralization |
| OREAS 354 |
Zn 49.3% |
Ag 98ppm |
Pb 1.58% |
primary |
sulphide |
SEDEX |