Edwardsita

Structural context

Monazite-(Ce)
Crystal System monoclinicSpace Group P21/c

Chemical context

Stoichiometric formulas

Edwardsita
mindat.org
  • March 13, 2023Ce(PO4)
Monazite-(Ce)
mindat.org
  • March 13, 2023Ce(PO4)Always contains major to minor amounts of other REE (Nd, La, Sm, ...) replacing Ce. Also often contains trace amounts of U and Th (coupled with Ca).
IMA
  • March 13, 2023Ce(PO4)
mineralogy.rocks
  • Aug. 30, 2022Ce3+PO4

Physical properties

ColorColor entities, recognized using a custom trained NER model
  • reddish brown
  • yellow brown
        • colourless
        Color noteOriginal color note from the source
        Commonly reddish brown to brown; shades of green to brown, yellow brown, rarely nearly white; yellow, colourless in transmitted light.
        StreakStreak entities, recognized using a custom trained NER model
          Streak noteOriginal streak note from the source
          White, faintly coloured.
          Lustre
          Sub-Adamantine
          Vitreous
          Sub-Vitreous
          Resinous
          Waxy
          Greasy
          Fracture
          Irregular/Uneven
          Conchoidal
          Transparency
          Translucent
          Tenacity
          brittle
          Hardness
          5—5.5
          Measured density
          5—5.5
          Calculated density
          5.26