Structure 1525720

1525719 << 1525720 >> 1525721
Original COD entry Download CIF Download DOT

Citation: Brown, G. E.; Prewitt, C. T.; Papike, J. J.; Sueno, S. (1972). A Comparison of the Structures of Low and High Pigeonite. Journal of Geophysical Research, 77, pp. 5778-5789.

Formula: Ca0.09 Fe0.52 Mg0.39 O3 Si

Chemical name: (Mg.39 Fe.52 Ca.09) Si O3

Cell parameters:

  • a = 9.858 Å
  • b = 9.053 Å
  • c = 5.329 Å
  • α = 90°
  • β = 109.42°
  • γ = 90°

List type: noninterleaving

List: 3D

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Molecules

CIF datablock 0, entity 1 of 1

Basis: (1;0;0 0;1;0 0;0;1)

Dimensionality: 3

Formula: Ca4 Fe8 Mg8 O24 Si8 (Ca Fe2 Mg2 O6 Si2)

Multiplicity: 1

Coordination sequences:

  • 2, 4, 9, 23, 40, 68, 92, 148, 173, 257
  • 2, 6, 17, 38, 55, 93, 116, 182, 195, 289
  • 4, 8, 17, 39, 68, 88, 142, 165, 248, 265
  • 4, 10, 25, 42, 73, 93, 153, 169, 254, 273
  • 5, 11, 22, 47, 65, 110, 128, 198, 222, 319
  • 5, 12, 29, 40, 76, 94, 149, 180, 254, 265
  • 5, 16, 24, 44, 63, 109, 134, 203, 216, 310
  • 6, 9, 23, 40, 68, 92, 148, 173, 257, 260
  • 7, 15, 30, 42, 80, 98, 153, 178, 254, 263
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