Information card for entry 1544676

Structure parameters

• Common name: lepidolite 2M2
• Mineral name: lepidolite 2M2
• Formula: Al2.01 F1.2 H0.8 K0.87 Li1.05 Na0.12 O10.4 Si3.39
• Calculated formula: Al4 F2.4 K2 Li2.1 O21.6 Si6.8
• Title of publication: Structural investigation of polymorphic transition between 2M2-, 1M- lepidolite and 2M1 muscovite
• Authors of publication: Takeda, H.; Haga, N.; Sadanaga, R.
• Journal of publication: Mineralogical Journal
• Year of publication: 1971
• Journal volume: 6
• Pages of publication: 203 - 215
• a: 9.032 ± 0.002 Å
• b: 5.2 ± 0.003 Å
• c: 20.15 ± 0.04 Å
• α: 90°
• β: 99.8 ± 0.2°
• γ: 90°
• Cell volume: 933 ± 2 ų
• Number of distinct elements: 8
• Space group number: 15
• Hermann-Mauguin space group symbol: C 1 2/c 1
• Hall space group symbol: -C 2yc
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No