OREAS 64

OREAS 64 is a gold–silver certified reference material produced from Cerro Moro low Ag–Au ore, blended with Cerro Moro high-Au ore and a silver concentrate.

The material replicates low-sulphidation epithermal vein mineralisation hosted in volcanic rocks, making it well-suited for calibration and QA/QC of Au–Ag assays (fire assay/ICP) and multi-element geochemical suites used in exploration and mill QA/QC.

OREAS 64 has been characterized using the following methods:

  • Gold via 25-50g fire assay with gravimetric finish
  • Silver via 25-50g fire assay with Gravimetric finish
  • Silver via 4-Acid digestion with AAS finish

Certified values for applicable analytes are operationally defined for each method, with results under OREAS ISO 17034 scope of accreditation.

Note: Analyte values are indicative only and may change when certified.

						

										

						
							

								Analyte
								
									
										Indicative Value									
								
								1SD
								Expanded Uncertainty Low
								Expanded Uncertainty High
								Method
							

						
						
															

									Ag, Silver (ppm)
									685
									TBD
									TBD
									TBD
									4-Acid Digestion
								

															

									Au, Gold (ppm)
									16.85
									TBD
									TBD
									TBD
									Pb Fire Assay
								

													
					

				


				


									
Downloads

											Certificate
					
											DataPack
					SDS NRAM (226 KB)				

					

													
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Specifications