OREAS 59a

OREAS 59a is one of four Cu-Au-As-Co-Fe-Mo-Ni-S certified reference materials (CRM’s) prepared from iron ore copper gold (IOCG) ore sourced from Cloncurry, Qld, Australia. The IOCG deposit is hosted in Proterozoic rocks of the Mt Isa Inlier and primary mineralisation is intimately associated with felsic to intermediate volcanic breccias. The breccias are rich in magnetite and disseminated sulphide mineralization.
Analyte Certified Value 1SD 95% Confidence Limits Low 95% Confidence Limits High Method
Cu, Copper (ppm) 3439 66 3389 3489 Aqua Regia Digestion
Au, Gold (ppb) 191 13.2 182 200 Pb Fire Assay
Co, Cobalt (ppm) 743 39 715 772 Aqua Regia Digestion
As, Arsenic (ppm) 666 38 635 696 Aqua Regia Digestion
Fe, Iron (wt.%) 17.90 0.620 17.40 18.50 Aqua Regia Digestion
Mo, Molybdenum (ppm) 80 12 71 89 Aqua Regia Digestion
Ni, Nickel (ppm) 46.0 1.64 44.0 48.0 Aqua Regia Digestion
S, Sulphur (wt.%) 3.04 0.210 2.86 3.21 Acid Digestion Titration
Downloads
Certificate
DataPack
SDS NRAM (367 KB)
Archived

This CRM is no longer available.
Information is provided for reference only.

Specifications