Name: | AKERMANITE | ||

Specification: | [9], structure type - melilite, at 2.78 GPa | ||

Formula: | Ca_{2}MgSi_{2}O_{7} | ||

Symmetry Class: | tetragonal | ||

Space Group: | P 4(-)2(1)m | ||

Unit CellParameters: | a = 7.7677 | c = 4.9495 | ||

Number of Formula Unit: | Z = 2 | Unit Cell Volume, Å: ^{3} | V = 298.64_{c} |

Number of Atomic Position: per full Unit Cell | P/U = 24 | Molar Volume, cm: ^{3}/mol | V = 89.94_{m} |

Number of Reflexes used in: Structure Determination | NR = 605 | X-ray density, g/cm^{3}: | p = 3.03 |

R-factor: | R = 0.0350 | MU, 1/cm: | µ = 206.956 |

Wave Length for Calculated: Powder Diffraction Patterns | Cu=1.54056 | Mass attenuation coefficient,: cm ^{2}/g | µ/p = 68.283 |

Theta-Interval for CPDP: | T/I = 1-45 |