Davidite is a mineral which exists in two forms:

Davidite-(La)

La_0.7Ce_0.2Ca_0.1Y_0.75U_0.25Ti₁₅Fe³⁺₅O₃₈

Synonyms: ICSD: 100554 PDF: 42-576

Discovered at Radium Hill mine, South Australia. Emblems: Hairy Nosed Wombat (faunal); Leafy Seadragon (marine); Piping Shrike (bird: unofficial); Sturts Desert Pea (floral); Opal (gemstone) Motto: United for the Common Wealth Slogan or Nickname: Festival State Other Australian states and territories Capital Adelaide Government Const. ...

Davidite-(Ce)

Ce_0.75La_0.25Y_0.75U_0.25Ti₁₅Fe³⁺₅O₃₈

Discovered Tuftane, Iveland, Norway. County Aust-Agder District Setesdal Municipality NO-0935 Administrative centre Iveland Mayor (2004) Ole Magne Omdal (Sp) Official language form Neutral Area  - Total  - Land  - Percentage Ranked 293 262 km² 246 km² 0. ...

Named for Edgeworth David (1858-1934), Australian geologist. Sir Tannant William Edgeworth David (January 28, 1858 - August 28, 1934 was an Australian geologist and explorer. ...

References

• Davidite-(La) at webmineral
• Davidite-(Ce) at webmineral