Information card for entry 9000019

Structure parameters

• Mineral name: Cronstedtite
• Formula: Fe1.4 H1.667 O4.001 Si0.5
• Calculated formula: Fe1.4 H1.667 O4.001 Si0.5
• Title of publication: Random structures of layer minerals as illustrated by cronstedtite (2FeO.Fe2O3.SiO2.2H2O). Possible iron content of kaolin
• Authors of publication: Hendricks, S. B.
• Journal of publication: American Mineralogist
• Year of publication: 1939
• Journal volume: 24
• Pages of publication: 529 - 539
• a: 3.16 Å
• b: 3.16 Å
• c: 21.25 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 183.765 ų
• Number of distinct elements: 4
• Space group number: 146
• Hermann-Mauguin space group symbol: R 3 :H
• Hall space group symbol: R 3
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No