Information card for entry 9000222

Structure parameters

• Mineral name: Hancockite
• Formula: Al2.02 Ca1.13 Fe0.98 H Mn0.12 O13 Pb0.5 Si3 Sr0.25
• Calculated formula: Al2.02 Ca1.13 Fe0.98 H Mn0.12 O13 Pb0.5 Si3 Sr0.25
• Title of publication: Refinement of the crystal structures of epidote, allanite and hancockite
• Authors of publication: Dollase, W. A.
• Journal of publication: American Mineralogist
• Year of publication: 1971
• Journal volume: 56
• Pages of publication: 447 - 464
• a: 8.958 Å
• b: 5.665 Å
• c: 10.304 Å
• α: 90°
• β: 114.4°
• γ: 90°
• Cell volume: 476.194 ų
• Number of distinct elements: 9
• Space group number: 11
• Hermann-Mauguin space group symbol: P 1 21/m 1
• Hall space group symbol: -P 2yb
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No