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Products > OREAS > Blanks >

OREAS 26a Au (1 ppb) basalt

Item: OR26a_500g

Unit of measure: ea

Additional Information:

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 Znvia four acid digestion (HNO₃-HClO₄-HCl-HF) with ICP-OES and ICP-MS finish (10 labs)

Download Certificate OREAS26a

Download DataPack OREAS26a

Analyte	Certified Value	1SD	95% CI Low	95% CI High	Method
Au, Gold (ppb)	1	IND	IND	IND	Pb Fire Assay
Cu, Copper (ppm)	50	4.6	47	53	4-Acid Digestion
Pb, Lead (ppm)	2.73	0.35	2.48	2.98	4-Acid Digestion
Ba, Barium (ppm)	281	14	273	289	4-Acid Digestion
Cd, Cadmium (ppm)	0.052	0.01	0.044	0.061	4-Acid Digestion
Co, Cobalt (ppm)	46.1	2.57	44.2	48.1	4-Acid Digestion
Fe, Iron (wt.%)	7.76	0.419	7.37	8.15	4-Acid Digestion
Mo, Molybdenum (ppm)	1.5	0.073	1.46	1.54	4-Acid Digestion
Ni, Nickel (ppm)	163	12	155	171	4-Acid Digestion
Sn, Tin (ppm)	1.57	0.122	1.47	1.68	4-Acid Digestion
Th, Thorium (ppm)	2.75	0.112	2.69	2.81	4-Acid Digestion
U, Uranium (ppm)	0.72	0.049	0.69	0.74	4-Acid Digestion
W, Tungsten (ppm)	0.5	0.048	0.45	0.55	4-Acid Digestion
Zn, Zinc (ppm)	107	5	103	110	4-Acid Digestion