OREAS 67a was prepared from gold-silver ore from Martabe, North Sumatra, Indonesia blended with fresh alkali olivine basalt from the Newer Volcanics Province, Victoria, Australia. Martabe is an epithermal high sulphidation gold deposit hosted by a sequence of tertiary volcanic and sedimentary rocks near a fault splay of the Great Sumatran Fault complex.

Analyte Certified Value 1SD 95% Confidence Limits Low 95% Confidence Limits High Method
Au, Gold (ppm) 2.24 0.096 2.19 2.28 Pb Fire Assay
Ag, Silver (ppm) 33.6 2.00 32.6 34.6 4-Acid Digestion
Cu, Copper (ppm) 325 10 321 330 4-Acid Digestion
Certificate DataPack SDS NRAM (231 KB)

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