Greg Anderson is Professor Emeritus in the Department of Earth Sciences at the University of Toronto. He began his career as a mining engineer and exploration geologist before becoming interested in geochemistry. After completing his Ph.D. at Toronto, he spent five years at Pennsylvania State University doing experimental work on mineral solubilities. Afterward, he returned to Toronto, where he has since divided his time between studies of mineral systems, lead-zinc ore deposits, and theoretical geochemistry. He is the co-author of two other textbooks for Earth scientists, and in 2000 was awarded the Past Presidents' Medal (now named the Peacock Medal) by the Mineralogical Association of Canada for contributions to geochemistry.