Information card for entry 1526273

Structure parameters

• Chemical name: (Ce1.86 La1.23 Nd0.35 Pr0.15 Sm0.01 Y0.04 Ca0.24 Th0.12) (Mg0.8 Fe0.2) (Cr1.28 Fe0.72) (Ti1.52 Nb0.32) Si4 O22
• Formula: Ca0.24 Ce1.86 Cr1.28 Fe0.92 La1.23 Mg0.8 Nb0.32 Nd0.35 O22 Pr0.15 Si4 Sm0.01 Th0.12 Ti1.52 Y0.04
• Calculated formula: Ca0.24 Ce1.86 Cr1.28 Fe0.92 La1.23 Mg0.8 Nb0.32 Nd0.35 O22 Pr0.15 Si4 Sm0.01 Th0.12 Ti1.52 Y0.04
• Title of publication: Polyakovite-(Ce), (REE, Ca)4 (Mg, Fe(2+)) (Cr(3+), Fe(3+))2 (Ti, Nb)2 Si4 O22, a new metamict mineral species from the Ilmen mountains, southern Ural, Russia: mineral description and crystal chemistry
• Authors of publication: Popov, V.A.; Pautov, L.A.; McCammon, C.; Sokolova, E.; Hawthorne, F.C.; Bazhenova, L.F.
• Journal of publication: Canadian Mineralogist
• Year of publication: 2001
• Journal volume: 39
• Pages of publication: 1095 - 1104
• a: 13.398 Å
• b: 5.6974 Å
• c: 11.042 Å
• α: 90°
• β: 100.539°
• γ: 90°
• Cell volume: 828.659 ų
• Number of distinct elements: 15
• 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