Information card for entry 9017542

Structure parameters

• Mineral name: Alumoakermanite
• Formula: Al0.5 Ca1.52 Fe0.3 Mg0.2 Na0.48 O7 Si2
• Calculated formula: Al Ca3.04 Fe0.6 Mg0.4 Na0.96 O14 Si4
• Title of publication: Alumoakermanite, (Ca,Na)2(Al,Mg,Fe2+)(Si2O7), a new mineral from the active carbonatite-nephelinite-phonolite volcano Oldoinyo Lengai, northern Tanzania
• Authors of publication: Wiedenmann, D.; Zaitsev, A. N.; Britvin, S. N.; Krivovichev, S. V.; Keller, J.
• Journal of publication: Mineralogical Magazine
• Year of publication: 2009
• Journal volume: 73
• Pages of publication: 373 - 384
• a: 7.7661 Å
• b: 7.7661 Å
• c: 5.0297 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 303.353 ų
• Number of distinct elements: 7
• Space group number: 113
• Hermann-Mauguin space group symbol: P -4 21 m
• Hall space group symbol: P -4 2ab
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No