Information card for entry 9001112

Structure parameters

• Mineral name: Protasite
• Formula: Ba O14 U3
• Calculated formula: Ba O14 U3
• Title of publication: Crystal structures and crystal chemistry of the uranyl oxide hydrates becquerelite, billietite, and protasite
• Authors of publication: Pagoaga, M. K.; Appleman, D. E.; Stewart, J. M.
• Journal of publication: American Mineralogist
• Year of publication: 1987
• Journal volume: 72
• Pages of publication: 1230 - 1238
• a: 12.2949 Å
• b: 7.2206 Å
• c: 6.9558 Å
• α: 90°
• β: 90.401°
• γ: 90°
• Cell volume: 617.497 ų
• Number of distinct elements: 3
• Space group number: 7
• Hermann-Mauguin space group symbol: P 1 n 1
• Hall space group symbol: P -2yac
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No