Davidite is a rare earth oxide mineral with chemical end members Lanthanum (La) and Cerium (Ce). It exists in two forms:

• Davidite-(La) discovered at Radium Hill mine, South Australia in 1906 and named by Douglas Mawson for Australian geologist Tannatt William Edgeworth David (1858-1934).

• Davidite-(Ce) first described in 1960 from Vemork, Iveland Municipality, Norway.

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