Joseph W. Greig

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Joseph W. Greig (1895–1977) was a Canadian-born American geochemist and physical chemist, a pioneer in high temperature phase equilibria and immiscibility investigations of oxides and sulfides. His name has been assigned to a new magnetic mineral, greigite (Fe
₃S
₄) discovered in 1963, increasing to nine the number of minerals known to have been named after Queen's geologists.