Uranophane-alpha (light yellow radiating spheres) and Uranophane-beta (dark yellow, fan-like, thick needles) on Granite from Miedzianka in Krkonoše near Janowice Wielkie in Poland (Width: 11,5 mm) — Photo: F. Rohowski · CC BY-SA 3.0 de
Uranophane-β
Uranophane-β is an IMA-recognized mineral species in the silicate class, with the chemical formula Ca(UO₂)₂(SiO₃OH)₂·5H₂O.
It crystallizes in the monoclinic crystal system (space group P2_1/a).
IMA symbol Urp-β, grandfathered status — known before the IMA’s founding, named in 1935.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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