Gadolinite-(Ce)

The cerium analogue of Gadolinite-(Y) and Gadolinite-(Nd). At the type locality, gadolinite-(Ce) often occurs with an orange or yellow alteration rim (up to 0.5 mm). The Italian occurrences of gadolinite-(Ce) are not probed by analyses and most correctly they should be classified as "gadolinite" (s.l.).

History

Activities related to discovery and approval of the group members

Structural context

Gadolinite-(Ce)
Crystal System monoclinicCrystal Class prismaticSpace Group P21/c
a4.82
b7.58
c10.01
alpha90
beta90.47
gamma90
volume365.9

Based on 1 measurements

Chemical context

Stoichiometric formulas

Gadolinite-(Ce)
mindat.org
  • March 13, 2023(Ce,La,Nd,Y)2Fe2+Be2Si2O10Often slightly radioactive due to minor U and/or Th contents; therefore often metamict.
IMA
  • March 13, 2023Ce2Fe2+Be2O2(SiO4)2
mineralogy.rocks
  • Aug. 30, 2022(Ce3+,La,Nd,Y)2Fe2+Be2O2(SiO4)2

Physical properties

ColorColor entities, recognized using a custom trained NER model
    Color noteOriginal color note from the source
    Black
    Lustre
    Vitreous
    Fracture
    Conchoidal
    Hardness
    6.5—7