Information card for entry 9002843

Structure parameters

• Mineral name: Birnessite
• Formula: H2.72 Mn0.5 Na0.364 O2.544
• Calculated formula: H1.088 Mn0.5 Na0.364 O2.544
• Title of publication: Structure of synthetic Na-rich birnessite: Evidence for a triclinic one-layer unit cell
• Authors of publication: Lanson, B.; Drits, V. A.; Feng, Q.; Manceau, A.
• Journal of publication: American Mineralogist
• Year of publication: 2002
• Journal volume: 87
• Pages of publication: 1662 - 1671
• a: 2.9513 Å
• b: 2.9547 Å
• c: 7.334 Å
• α: 78.72°
• β: 101.79°
• γ: 122.33°
• Cell volume: 52.611 ų
• Number of distinct elements: 4
• Space group number: 2
• Hermann-Mauguin space group symbol: P -1
• Hall space group symbol: -P 1
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No