Davidite is a rare earth oxide mineral with chemical Lanthanum (La) and Cerium (Ce). It exists in two forms:
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Davidite-(La) discovered at Radium Hill mine, South Australia in 1906 and named by Douglas Mawson for Australian geologist Edgeworth David (1858-1934).
[Branagan, D.F. (2005): T.W. Edgeworth David: A Life: Geologist, Adventurer and "Knight in the Old Brown Hat", National Library of Australia, Canberra, p. 471. ]
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Davidite-(Ce) first described in 1960 from Vemork, Iveland, Norway.
