Uranocircite

Autunite Group. Dehydrates rapidly in dry atmospheres at normal temperature to metauranocircite (as metauranocircite-I in Walenta, 1963).

History

Activities related to discovery and approval of the group members

Structural context

Uranocircite
Crystal System tetragonalCrystal Class prismaticSpace Group P2/c
a7.019.87 (8.8967)
b7.019.91 (8.93)
c16.8520.46 (18.0767)
alpha90
beta90
gamma9090.5 (90.1667)
volume1005.4061644.851 (1430.5773)

Based on 3 measurements

Chemical context

Stoichiometric formulas

Uranocircite
mindat.org
  • March 13, 2023Ba(UO2)2(PO4)2·10H2O
IMA
  • March 13, 2023Ba(UO2)2(PO4)2 · 10H2O
mineralogy.rocks
  • Aug. 30, 2022Ba(U6+O2)2(PO4)2·10H2O

Elements recorded on EPMA

1
Ba
1
H
1
O
1
P
1
U

Physical properties

ColorColor entities, recognized using a custom trained NER model
  • yellow-green
  • pale canary-yellow
Color noteOriginal color note from the source
Yellow-green, yellow; pale canary-yellow in transmitted light.
Lustre
Pearly
Transparency
Transparent
Translucent
Hardness
2—2.5