Information card for entry 9001937

Structure parameters

• Mineral name: Actinolite
• Formula: Al0.028 Ca1.814 Cl0.026 F0.048 Fe3.17 H1.872 K0.004 Mg1.906 Mn0.092 Na0.038 O23.926 Si7.972
• Calculated formula: Al0.028 Ca1.814 Cl0.026 F0.048 Fe3.17 H1.872 K0.004 Mg1.906 Mn0.092 Na0.038 O23.926 Si7.972
• Title of publication: Fe-Mg order-disorder in tremolite-actinolite-ferro-actinolite at ambient and high temperature Sample: C51, ID4-4C, from Isua Belt, East Greenland, in an iron formation after heating at 700 C
• Authors of publication: Evans, B. W.; Yang, H.
• Journal of publication: American Mineralogist
• Year of publication: 1998
• Journal volume: 83
• Pages of publication: 458 - 475
• a: 9.903 Å
• b: 18.211 Å
• c: 5.299 Å
• α: 90°
• β: 104.64°
• γ: 90°
• Cell volume: 924.614 ų
• Sample thermal history: after heating at 700 C
• Number of distinct elements: 12
• Space group number: 12
• Hermann-Mauguin space group symbol: C 1 2/m 1
• Hall space group symbol: -C 2y
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No