Background
Simpson was born in Woollahra, New South Wales to an Irish father and English mother.
Simpson was born in Woollahra, New South Wales to an Irish father and English mother.
He was educated at Sydney Grammar School and the University of Sydney where he graduated Bachelor of Engineering with honours, in 1895 and Doctor of Science in 1919.
Simpson worked at the Rivertree silver mill, New South Wales and then for the Mount Morgan Gold-Mining Company in Queensland. In 1897 he became mineralogist and assayer with the Geological Survey of Western Australia. He helped to establish the Western Australian School of Mines.
He was awarded the Clarke Medal by the Royal Society of New South Wales in 1934.
Simpson published A Key to Mineral Groups, Species and Varieties in 1932 and a three-volume set Minerals of Western Australia was published after his death.