OREAS 284

OREAS 284 is one of a suite of six gold ore CRMs (OREAS 284 to OREAS 289) prepared from a blend of ores and barren granodiorite. The ores were sourced from the Loulo-Gounkoto Complex in Western Mali.

 The certification program will include:

  • Au by 25-40g fire assay with ICP-OES or AAS finish;
  • Au by aqua regia digestion (10-50g sample weight) with AAS or ICP finish;
  • Au by cyanide leach (5-200g sample weight) with ICP or AAS finish;
  • Full elemental suites by 4-acid (HCl-HNO3-HF-HClO4) digestion with ICP-OES and MS finish, including over range analytes by ore-grade 4A digestion;
  • Full elemental suites by aqua regia digestion with ICP-OES and MS analysis, including over range analytes by ore-grade AR digestion;
  • Total S by IR combustion furnace (Leco).

 OREAS 284 will be available in 60g laminated foil pouches and 500g plastic screw lid jars.

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

						

										

						
							

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

						
						
															

									Au, Gold (ppm)
									0.400
									TBD
									TBD
									TBD
									Pb Fire Assay
								

															

									As, Arsenic (ppm)
									163
									TBD
									TBD
									TBD
									4-Acid Digestion
								

															

									S, Sulphur (wt.%)
									0.150
									TBD
									TBD
									TBD
									4-Acid Digestion
								

													
					

				


				


									
Downloads

											Certificate
					
											DataPack
					SDS NRAM (255 KB)				

					

													
Stock Coming Soon

							
This CRM is currently in production and not yet available for orders.


											


											
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Specifications