Preparation and Certification of a Reference Material of South African Andalusite

摘要

The report describes the preparation, analysis, and certification of South African Reference Material (SARM) 34. The material is an andalusite concentrate, which was supplied by Rand London Ltd, Weedons Minerals (Pty) Ltd, and Cullinan Minerals. Seventeen laboratories in nine countries used a variety of analytical techniques to provide the analytical results. The certified values assigned to Al2O3, SiO2, Fe (as Fe2O3), TiO2, K2O, Na2O, MgO, and loss on ignition, and the uncertified (tentative) value assigned to CaO are presented. The participating laboratories and the detailed analytical results are listed in appendices.