Information card for entry 9001921

Structure parameters

• Mineral name: Actinolite
• Formula: Al0.138 Ca1.774 Fe0.594 H1.976 K0.01 Mg4.43 Mn0.02 Na0.132 O24 Si7.952
• Calculated formula: Al0.138 Ca1.774 Fe0.594 H1.976 K0.01 Mg4.43 Mn0.02 Na0.132 O24 Si7.952
• Title of publication: Fe-Mg order-disorder in tremolite-actinolite-ferro-actinolite at ambient and high temperature Sample: C78, NMNH 93728 from Greiner, Zillertal, Austria in act-talc rock 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: 9.833 Å
• b: 18.078 Å
• c: 5.282 Å
• α: 90°
• β: 104.58°
• γ: 90°
• Cell volume: 908.697 ų
• Sample thermal history: after heating at 700 C
• Number of distinct elements: 10
• 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