OREAS 68a

OREAS 68a 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)	3.89	0.150	3.82	3.95	Pb Fire Assay
Ag, Silver (ppm)	42.9	1.70	42.1	43.7	4-Acid Digestion
Cu, Copper (ppm)	392	15	384	400	4-Acid Digestion

Downloads

Certificate DataPack SDS NRAM (226 KB)

Specifications

CRM State:

primary
Matrix:

metasediment/basalt
Mineralisation:

high sulphidation epithermal
CRM Group(s):

Au >1 ppm
Au-Ag ore