Information card for entry 9011514

Structure parameters

• Mineral name: Brianite
• Formula: Ca Mg Na2 O8 P2
• Calculated formula: Ca Mg Na2 O8 P2
• Title of publication: The crystal structures of NaMgPO~4~, Na~2~CaMg(PO~4~)~2~ and Na~18~Ca~13~Mg~5~(PO~4~)~18~: new examples for glaserite related structures Note: known as the alpha polymorph of Na~2~CaMg(PO~4~)~2~
• Authors of publication: Alkemper, J.; Fuess, H.
• Journal of publication: Zeitschrift f"ur Kristallographie
• Year of publication: 1998
• Journal volume: 213
• Journal issue: 5
• Pages of publication: 282 - 287
• a: 9.12 Å
• b: 5.198 Å
• c: 13.37 Å
• α: 90°
• β: 90.78°
• γ: 90°
• Cell volume: 633.756 ų
• Number of distinct elements: 5
• Space group number: 14
• Hermann-Mauguin space group symbol: P 1 21/c 1
• Hall space group symbol: -P 2ybc
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No