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Uranpyrochlor
German name.
Structural context
Uranpyrochlore (of Hogarth 1977)
Crystal System
isometric
Crystal Class
hexoctahedral
Space Group
Fd-3m
Chemical context
Stoichiometric formulas
Uranpyrochlor
mindat.org
March 13, 2023
(U,Ca,Ce)
2
(Nb,Ta)
2
O
6
(OH,F)
Uranpyrochlore (of Hogarth 1977)
mindat.org
March 13, 2023
(Ca,U,Ce)
2
(Nb,Ti,Ta)
2
O
6
(OH,F)
usually is enriched by Ti, but in lesser quantities then betafites
mineralogy.rocks
Aug. 30, 2022
(Ca,U,Ce
3+
)
2
(Nb
5+
,Ti
4+
,Ta)
2
O
6
(OH,F)
Physical properties
Color
Color entities, recognized using a custom trained NER model
red-brown
chocolate-brown
amber-yellow
Color note
Original color note from the source
Red, red-brown, chocolate-brown to black, amber-yellow
Lustre
Adamantine
Resinous
Hardness
4—5