OREAS 503c

Specs

• CRM State: primary
• Matrix: quartz monzonite
• Mineralisation: porphyry copper-gold

CRM Group

• Au <1 ppm
• Au-Cu ore
• Cu ore
• SuperCRM

Price

• 10g = $3.00
• 60g = $7.35

OREAS 503c Certificate.pdf
View or Download 1 MB OREAS 503c DataPa...6.xlsx
View or Download 931 KB SDS NRAM
View or Download 468 KB Add CRM to Enquiry Cart

OREAS 503c was prepared from a blend of porphyry copper-gold ore, barren granodiorite and a minor quantity of Cu-Mo concentrate. The ore was sourced from the Ridgeway underground mine located in the Cadia Valley Operations (CVO) situated in central western New South Wales, Australia. The barren I-type hornblende-bearing granodiorite was sourced from the Late Devonian Lysterfield granodiorite complex located in eastern Melbourne, Australia.

Thirty commercial analytical laboratories participated in the program to characterise the elements reported in Tables 1 to 4. The following methods were employed: 

• Gold via 25-40g fire assay with AAS (18 labs) or ICP-OES (12 labs) finish;
• Gold via 15-50g aqua regia digestion with ICP-MS (13 labs), ICP-OES (2 labs) or AAS (6 labs) finish;
• Four acid digestion for full elemental suite ICP-OES and ICP-MS (30 laboratories);
• Aqua regia digestion for full elemental suite ICP-OES and ICP-MS (25 laboratories);
• Instrumental neutron activation analysis for Au on 1g subsamples to confirm homogeneity (1 laboratory).

Constituent	Certified Value	1SD	95% Confidence Low	95% Confidence High	Method
Au, Gold (ppm)	0.698	0.015	0.693	0.703	Pb Fire Assay
Cu, Copper (wt.%)	0.538	0.015	0.533	0.543	4-Acid Digestion
Mo, Molybdenum (ppm)	318	11	313	322	4-Acid Digestion
Ag, Silver (ppm)	0.830	0.089	0.788	0.871	4-Acid Digestion
Al, Aluminium (wt.%)	7.37	0.376	7.24	7.50	4-Acid Digestion
As, Arsenic (ppm)	34.5	2.05	33.8	35.2	4-Acid Digestion
Ba, Barium (ppm)	985	52	965	1004	4-Acid Digestion
Be, Beryllium (ppm)	2.65	0.154	2.59	2.71	4-Acid Digestion
Bi, Bismuth (ppm)	0.60	0.041	0.58	0.62	4-Acid Digestion
Ca, Calcium (wt.%)	2.63	0.140	2.58	2.69	4-Acid Digestion
Cd, Cadmium (ppm)	0.22	0.04	0.19	0.25	4-Acid Digestion
Ce, Cerium (ppm)	63	3.6	61	64	4-Acid Digestion
Co, Cobalt (ppm)	14.6	0.45	14.4	14.8	4-Acid Digestion
Cr, Chromium (ppm)	68	4.4	66	70	4-Acid Digestion
Cs, Cesium (ppm)	10.3	0.34	10.1	10.4	4-Acid Digestion
Dy, Dysprosium (ppm)	4.21	0.363	3.97	4.46	4-Acid Digestion
Er, Erbium (ppm)	2.37	0.072	2.31	2.43	4-Acid Digestion
Eu, Europium (ppm)	1.26	0.094	1.18	1.34	4-Acid Digestion
Fe, Iron (wt.%)	5.17	0.243	5.08	5.25	4-Acid Digestion
Ga, Gallium (ppm)	18.5	0.59	18.3	18.8	4-Acid Digestion
Gd, Gadolinium (ppm)	4.75	0.347	4.48	5.01	4-Acid Digestion
Hf, Hafnium (ppm)	2.40	0.114	2.36	2.44	4-Acid Digestion
Ho, Holmium (ppm)	0.85	0.021	0.84	0.86	4-Acid Digestion
In, Indium (ppm)	0.086	0.004	0.084	0.088	4-Acid Digestion
K, Potassium (wt.%)	3.18	0.131	3.13	3.23	4-Acid Digestion
La, Lanthanum (ppm)	32.0	1.84	31.3	32.7	4-Acid Digestion
Li, Lithium (ppm)	31.1	1.86	30.5	31.8	4-Acid Digestion
Lu, Lutetium (ppm)	0.34	0.029	0.32	0.35	4-Acid Digestion
Mg, Magnesium (wt.%)	1.50	0.064	1.48	1.53	4-Acid Digestion
Mn, Manganese (wt.%)	0.054	0.002	0.053	0.054	4-Acid Digestion
Na, Sodium (wt.%)	1.99	0.076	1.97	2.02	4-Acid Digestion
Nb, Niobium (ppm)	16.6	1.26	16.1	17.0	4-Acid Digestion
Nd, Neodymium (ppm)	27.7	2.21	26.2	29.3	4-Acid Digestion
Ni, Nickel (ppm)	38.6	2.82	37.6	39.5	4-Acid Digestion
P, Phosphorus (wt.%)	0.099	0.006	0.097	0.101	4-Acid Digestion
Pb, Lead (ppm)	20.6	1.36	20.2	21.1	4-Acid Digestion
Pr, Praseodymium (ppm)	7.26	0.259	7.07	7.45	4-Acid Digestion
Rb, Rubidium (ppm)	178	6	175	180	4-Acid Digestion
Re, Rhenium (ppb)	5	1	5	6	4-Acid Digestion
S, Sulphur (wt.%)	0.586	0.028	0.575	0.596	4-Acid Digestion
Sb, Antimony (ppm)	3.60	0.206	3.53	3.67	4-Acid Digestion
Sc, Scandium (ppm)	13.2	0.93	12.8	13.7	4-Acid Digestion
Se, Selenium (ppm)	3.31	0.66	3.09	3.53	4-Acid Digestion
Sm, Samarium (ppm)	5.26	0.398	5.00	5.52	4-Acid Digestion
Sn, Tin (ppm)	3.38	0.093	3.34	3.42	4-Acid Digestion
Sr, Strontium (ppm)	336	12	331	340	4-Acid Digestion
Ta, Tantalum (ppm)	1.19	0.102	1.13	1.24	4-Acid Digestion
Tb, Terbium (ppm)	0.73	0.031	0.72	0.75	4-Acid Digestion
Te, Tellurium (ppm)	0.35	0.04	0.33	0.37	4-Acid Digestion
Th, Thorium (ppm)	16.5	1.41	16.0	17.1	4-Acid Digestion
Ti, Titanium (wt.%)	0.453	0.015	0.447	0.459	4-Acid Digestion
Tl, Thallium (ppm)	0.86	0.046	0.84	0.89	4-Acid Digestion
Tm, Thulium (ppm)	0.33	0.021	0.32	0.35	4-Acid Digestion
U, Uranium (ppm)	4.47	0.383	4.32	4.61	4-Acid Digestion
V, Vanadium (ppm)	123	6	121	126	4-Acid Digestion
W, Tungsten (ppm)	4.40	0.376	4.29	4.51	4-Acid Digestion
Y, Yttrium (ppm)	23.3	1.05	22.9	23.7	4-Acid Digestion
Yb, Ytterbium (ppm)	2.24	0.25	2.10	2.38	4-Acid Digestion
Zn, Zinc (ppm)	87	4.1	85	88	4-Acid Digestion
Zr, Zirconium (ppm)	75	7.3	72	78	4-Acid Digestion
Ag, Silver (ppm)	0.826	0.038	0.805	0.846	Aqua Regia Digestion
Al, Aluminium (wt.%)	2.03	0.095	1.99	2.07	Aqua Regia Digestion
As, Arsenic (ppm)	35.4	1.95	34.7	36.1	Aqua Regia Digestion
Au, Gold (ppm)	0.692	0.022	0.683	0.702	Aqua Regia Digestion
Ba, Barium (ppm)	377	22	367	388	Aqua Regia Digestion
Be, Beryllium (ppm)	0.52	0.06	0.47	0.57	Aqua Regia Digestion
Bi, Bismuth (ppm)	0.61	0.038	0.59	0.63	Aqua Regia Digestion
Ca, Calcium (wt.%)	1.15	0.064	1.12	1.18	Aqua Regia Digestion
Ce, Cerium (ppm)	56	3.2	55	58	Aqua Regia Digestion
Co, Cobalt (ppm)	13.7	0.55	13.5	14.0	Aqua Regia Digestion
Cr, Chromium (ppm)	65	2.9	63	66	Aqua Regia Digestion
Cs, Cesium (ppm)	8.50	0.336	8.34	8.66	Aqua Regia Digestion
Cu, Copper (wt.%)	0.539	0.013	0.534	0.544	Aqua Regia Digestion
Dy, Dysprosium (ppm)	3.08	0.238	2.82	3.35	Aqua Regia Digestion
Er, Erbium (ppm)	1.61	0.24	1.29	1.94	Aqua Regia Digestion
Fe, Iron (wt.%)	4.68	0.207	4.59	4.77	Aqua Regia Digestion
Ga, Gallium (ppm)	8.60	0.91	8.13	9.07	Aqua Regia Digestion
Gd, Gadolinium (ppm)	3.64	0.327	3.32	3.96	Aqua Regia Digestion
Hf, Hafnium (ppm)	0.40	0.04	0.37	0.42	Aqua Regia Digestion
Ho, Holmium (ppm)	0.58	0.08	0.47	0.69	Aqua Regia Digestion
In, Indium (ppm)	0.055	0.005	0.052	0.059	Aqua Regia Digestion
K, Potassium (wt.%)	1.01	0.055	0.99	1.04	Aqua Regia Digestion
La, Lanthanum (ppm)	28.1	2.24	27.1	29.1	Aqua Regia Digestion
Li, Lithium (ppm)	29.7	1.71	28.9	30.5	Aqua Regia Digestion
Mg, Magnesium (wt.%)	1.24	0.043	1.22	1.25	Aqua Regia Digestion
Mn, Manganese (wt.%)	0.039	0.001	0.038	0.039	Aqua Regia Digestion
Mo, Molybdenum (ppm)	317	10	313	320	Aqua Regia Digestion
Nb, Niobium (ppm)	1.13	0.16	1.00	1.26	Aqua Regia Digestion
Nd, Neodymium (ppm)	22.2	2.15	19.8	24.6	Aqua Regia Digestion
Ni, Nickel (ppm)	36.8	2.42	35.8	37.7	Aqua Regia Digestion
P, Phosphorus (wt.%)	0.095	0.004	0.093	0.097	Aqua Regia Digestion
Pb, Lead (ppm)	8.80	0.871	8.38	9.23	Aqua Regia Digestion
Pr, Praseodymium (ppm)	6.34	0.361	5.87	6.80	Aqua Regia Digestion
Rb, Rubidium (ppm)	116	4	114	118	Aqua Regia Digestion
Re, Rhenium (ppb)	4	1	4	5	Aqua Regia Digestion
S, Sulphur (wt.%)	0.578	0.034	0.563	0.592	Aqua Regia Digestion
Sb, Antimony (ppm)	2.55	0.42	2.32	2.77	Aqua Regia Digestion
Sc, Scandium (ppm)	7.25	0.437	7.05	7.45	Aqua Regia Digestion
Sm, Samarium (ppm)	4.07	0.315	3.72	4.41	Aqua Regia Digestion
Sn, Tin (ppm)	2.60	0.167	2.50	2.70	Aqua Regia Digestion
Sr, Strontium (ppm)	69	4.2	68	71	Aqua Regia Digestion
Ta, Tantalum (ppm)	0.010	0.001	0.010	0.011	Aqua Regia Digestion
Tb, Terbium (ppm)	0.56	0.029	0.53	0.59	Aqua Regia Digestion
Te, Tellurium (ppm)	0.37	0.06	0.34	0.40	Aqua Regia Digestion
Th, Thorium (ppm)	16.7	0.80	16.4	17.1	Aqua Regia Digestion
Ti, Titanium (wt.%)	0.328	0.018	0.321	0.336	Aqua Regia Digestion
Tl, Thallium (ppm)	0.63	0.052	0.60	0.66	Aqua Regia Digestion
U, Uranium (ppm)	4.23	0.361	4.06	4.41	Aqua Regia Digestion
V, Vanadium (ppm)	113	4	111	114	Aqua Regia Digestion
W, Tungsten (ppm)	2.82	0.43	2.60	3.03	Aqua Regia Digestion
Y, Yttrium (ppm)	15.8	0.59	15.4	16.1	Aqua Regia Digestion
Zn, Zinc (ppm)	79	4.3	77	81	Aqua Regia Digestion
Zr, Zirconium (ppm)	9.61	0.538	9.31	9.91	Aqua Regia Digestion
Cu-Sol, Copper Soluble (wt.%)	0.200	0.010	0.191	0.208	Sulphuric Acid Leach