OREAS 905b

OREAS 905b was prepared from a blend of copper oxide ore and barren weathered rhyodacite. The ore was sourced from a copper rich zone within MMG’s VMS Gossan Hill deposit at Golden Grove and the rhyodacite was obtained from a quarry approximately 30km east of Melbourne, Australia. The Gossan Hill deposit is located 338km NNE of Perth in the Murchison Province of the Archaen Yilgarn Craton in Western Australia. The ore deposit is hosted within and underlain by a layered rhyodacitic volcanoclastic succession. The pre-oxidation mineralisation assemblage consisted of sphalerite, chalcopyrite and lesser galena with a gangue of pyrite, pyrrhotite and magnetite.

Anticipated Certification Program

  1. Au by 25 to 50g fire assay with an appropriate finish to achieve a 5ppb LLD and reading resolution.
  2. Au by 15-50g aqua regia digest with an appropriate finish to achieve a ≤5ppb LLD and reading resolution.
  3. Full elemental ICP-OES and ICP-MS suites by 4-acid digestion with over range (>1% Cu) copper by ore grade 4-acid digestion.
  4. Full elemental ICP-OES and ICP-MS suites by aqua regia digestion with over range (>1% Cu) copper by ore grade aqua regia digestion.
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)
									0.372
									TBD
									TBD
									TBD
									Pb Fire Assay
								

															

									Ag, Silver (ppm)
									0.690
									TBD
									TBD
									TBD
									4-Acid Digestion
								

															

									Cu, Copper (wt.%)
									0.150
									TBD
									TBD
									TBD
									4-Acid Digestion
								

															

									S, Sulphur (wt.%)
									0.030
									TBD
									TBD
									TBD
									4-Acid Digestion
								

													
					

				


				


									
Downloads

											Certificate
					
											DataPack
					SDS NRAM (255 KB)				

					

													
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Specifications