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davidite
Davidite is a rare earth oxide mineral with chemical end members La and Ce. It exists in two forms: *Davidite-(La) (La,Ce,Ca)(Y,U)(Ti,Fe3+)20O38 discovered at Radium Hill mine, South Australia in 1906 and named by Douglas Mawson for Australian geologist Tannatt William 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. ISBN 0 642 10791 2 〕 *Davidite-(Ce) (Ce,La)(Y,U)(Ti,Fe3+)20O38 first described in 1960 from Vemork, Iveland, Norway. ==References==
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