The death of Alan Criddle on May 2nd 2002, aged just 57, was a tremendous loss both to his friends and family and to the international mineralogical community. At that time Alan was Chairman of the Commission on Ore Mineralogy and UK national representative on the Commission on New Minerals and Mineral Names of the International Mineralogical Association. His loss will be most keenly felt in the field of reflected light microscopy as he had taken up the challenge of quantifying the reflectance of ore minerals and creating databases such as the Quantitative Data File (QDF) for Ore Minerals...

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