Yttrialite-(Y)

Known synthetic analogue. Probably polymorphous with anorthoyttrialite-(Y) (?: confirmation needed).

History

Activities related to discovery and approval of the group members

Structural context

Yttrialite-(Y)
Crystal System monoclinicCrystal Class prismaticSpace Group P21/m
a7.5
b8.06
c5.02
alpha90
beta112
gamma90
volume281.362

Based on 1 measurements

Chemical context

Stoichiometric formulas

Yttrialite-(Y)
mindat.org
  • March 13, 2023(Y,Th)2Si2O7
IMA
  • March 13, 2023Y2Si2O7
mineralogy.rocks
  • Aug. 30, 2022Y2Si2O7

Elements recorded on EPMA

1
O
1
Si
1
Y

Physical properties

ColorColor entities, recognized using a custom trained NER model
  • olive-green
      • orange-yellow
      Color noteOriginal color note from the source
      Olive-green, brown to black; often with an orange-yellow crust
      Lustre
      Vitreous
      Greasy
      Dull
      Transparency
      Translucent
      Opaque
      Hardness
      5—5.5
      Measured density
      4.56—4.58
      Calculated density
      4