Structure 9006451

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Citation: Yang, H.; Hazen, R. M.; Downs, R. T.; Finger, L. W. (1997). Structural change associated with the incommensurate-normal phase transition in akermanite, Ca2MgSi2O7, at high pressure Sample: P = 1.37 GPa. Physics and Chemistry of Minerals, 24, pp. 510-519.

Formula: Ca2 Mg O7 Si2

Cell parameters:

  • a = 7.8046 Å
  • b = 7.8046 Å
  • c = 4.9772 Å
  • α = 90°
  • β = 90°
  • γ = 90°

List type: noninterleaving

List: 2D

Combined 3D structure and graph

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JSmol combined CIF view

Linear Graph Knot

Molecules

CIF datablock 0, entity 1 of 1

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

Dimensionality: 2

Formula: Mg2 O14 Si4 (Mg O7 Si2)

Multiplicity: 1

Coordination sequences:

  • 1, 3, 3, 9, 8, 21, 12, 31, 15, 38
  • 2, 6, 4, 12, 10, 26, 14, 34, 18, 46
  • 2, 6, 5, 15, 9, 22, 14, 36, 17, 43
  • 4, 3, 9, 8, 21, 12, 31, 15, 38, 20
  • 4, 4, 12, 8, 20, 12, 32, 16, 40, 20
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