Andrew C. Roberts

Canadian mineralogist

Canadian mineralogist, Canadian Museum of Nature, Ottawa

Analytical technician and mineralogist, Department of Natural History, Royal Ontario Museum (ROM), Toronto, Ontario

Mineralogist, Canadian Geological Survey, Ottawa; associate curator, Canadian National Mineral Collection (1972-1997)

American and Canadian geologist and geochemist

Canadian mineralogist

Mineralogist and professor, University of Arizona

Canadian mineralogist, canadian museum of nature

Professor of geology at McGill University, Montreal, Canada and editor of 'The Canadian Mineralogist'