SimpsoniteCollection Highlights | Updated 4 years ago Simpsonite Photo from WA Museum Named after Edward Sydney Simpson (1875-1939), Government Mineralogist and Analyst in Western Australia, simpsonite is a mineral that contains aluminium, tantalum and niobium, combined with oxygen, fluorine and hydrogen. The first described sample (type locality) is from Tabba Tabba, Western Australia. Mineral Collection View the discussion thread.