title: Davidite
text: # Davidite
  
  Davidite is a rare earth oxide mineral with chemical end members La and Ce. It exists in two forms:
  
  * Davidite-(La) $(La,Ce,Ca)(Y,U)(Ti,Fe^{3+}$ ) $_{20}O$ $_{38}$ 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) $(Ce,Le)(Y,U)(Ti,Fe^{3+}$ ) $_{20}O$ $_{38}$ first described in 1960 from Vemork, Iveland, Norway.
  