Uranophan-alpha

Structural context

Uranophane
Crystal System monoclinicCrystal Class sphenoidalSpace Group P21

Chemical context

Stoichiometric formulas

Uranophan-alpha
mindat.org
  • March 13, 2023Ca(UO2)2(SiO3OH)2·5H2O
Uranophane
IMA
  • Dec. 7, 2023Ca(UO2)2(SiO3OH)2 · 5H2O
mindat.org
  • March 13, 2023Ca(UO2)2(SiO3OH)2·5H2O
mineralogy.rocks
  • Aug. 30, 2022Ca(U6+O2)2(SiO3OH)2·5H2O

Physical properties

ColorColor entities, recognized using a custom trained NER model
  • light yellow
  • lemon-yellow
  • honey-yellow
  • straw-yellow
  • green-yellow
Color noteOriginal color note from the source
Light yellow, lemon-yellow, honey-yellow, straw-yellow, green-yellow
Lustre
Vitreous
Greasy
Silky
Dull
Earthy
Transparency
Transparent
Translucent
Tenacity
brittle
Hardness
2—3
Measured density
3.8—3.91
Calculated density
3.78