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Products > OREAS > Blanks >

OREAS 22d Au (1 ppb) quartz

Item: OR22d_1Kg

Unit of measure: ea

Description:

OREAS 22d has been prepared from quartz sand to which 0.5% iron oxide has been added to produce a pale grey pulp. It is characterised by extremely low background gold of less than 1 parts per billion. Seven commercial analytical laboratories participated in the program to characterise (in addition to gold by fire assay) Ag, Al, As, Ba, Bi, Cd, Co, Cu, Fe, Hf, Li, Mn, Mo, Nb, Ni, Rb, Sb, Sn, Th, Ti, U, V, W, Y, Zn and Zr by 4-acid digestion with ICP-OES or ICP-MS finish.

Download Certificate OREAS22d

Download DataPack OREAS22d

Analyte	Certified Value	1SD	95% CI Low	95% CI High	Method
Ag, Silver (ppm)	0.1	IND	IND	IND	4-Acid Digestion
Al, Aluminium (wt.%)	0.132	0.008	0.123	0.142	4-Acid Digestion
As, Arsenic (ppm)	1	IND	IND	IND	4-Acid Digestion
Ba, Barium (ppm)	6.17	0.63	5.66	6.67	4-Acid Digestion
Bi, Bismuth (ppm)	0.1	IND	IND	IND	4-Acid Digestion
Cd, Cadmium (ppm)	0.1	IND	IND	IND	4-Acid Digestion
Co, Cobalt (ppm)	0.85	0.071	0.77	0.93	4-Acid Digestion
Cu, Copper (ppm)	9.23	1.34	7.85	10.61	4-Acid Digestion
Fe, Iron (wt.%)	0.468	0.037	0.432	0.504	4-Acid Digestion
Hf, Hafnium (ppm)	0.22	0.03	0.19	0.24	4-Acid Digestion
Li, Lithium (ppm)	14.2	1.33	12.5	16	4-Acid Digestion
Mn, Manganese (wt.%)	0.011	0.001	0.009	0.013	4-Acid Digestion
Mo, Molybdenum (ppm)	2.36	0.086	2.28	2.44	4-Acid Digestion
Nb, Niobium (ppm)	0.88	0.081	0.79	0.97	4-Acid Digestion
Ni, Nickel (ppm)	4.38	0.63	4.05	4.7	4-Acid Digestion
Pb, Lead (ppm)	0.72	0.26	0.49	0.95	4-Acid Digestion
Rb, Rubidium (ppm)	0.54	0.06	0.49	0.59	4-Acid Digestion
Sb, Antimony (ppm)	0.21	0.03	0.19	0.22	4-Acid Digestion
Sn, Tin (ppm)	0.61	0.013	0.59	0.62	4-Acid Digestion
Th, Thorium (ppm)	0.67	0.1	0.55	0.78	4-Acid Digestion
Ti, Titanium (wt.%)	0.021	0.001	0.021	0.022	4-Acid Digestion
U, Uranium (ppm)	0.18	0.05	0.13	0.22	4-Acid Digestion
V, Vanadium (ppm)	2.63	0.5	2.12	3.15	4-Acid Digestion
W, Tungsten (ppm)	0.21	0.03	0.18	0.24	4-Acid Digestion
Y, Yttrium (ppm)	0.69	0.07	0.61	0.76	4-Acid Digestion
Zn, Zinc (ppm)	6.7	1.31	5.59	7.81	4-Acid Digestion
Zr, Zirconium (ppm)	7.02	0.6	6.31	7.73	4-Acid Digestion
Au, Gold (ppb)	1	IND	IND	IND	Pb Fire Assay