Name: | OMPHACITE | ||

Specification: | [3], "distorted" structure type - omphacite | ||

Formula: | (Ca,Na)(Mg,Al,Fe)Si_{2}O_{6} | ||

Symmetry Class: | monoclinic-beta | ||

Space Group: | P 2 | ||

Unit CellParameters: | a = 9.5560 | b = 8.7620 | c = 5.2450 | beta = 106.8700 | ||

Number of Formula Unit: | Z = 4 | Unit Cell Volume, Å: ^{3} | V = 420.26_{c} |

Number of Atomic Position: per full Unit Cell | P/U = 40 | Molar Volume, cm: ^{3}/mol | V = 63.29_{m} |

Number of Reflexes used in: Structure Determination | NR = 830 | X-ray density, g/cm^{3}: | p = 3.40 |

R-factor: | R = 0.0800 | MU, 1/cm: | µ = 237.014 |

Wave Length for Calculated: Powder Diffraction Patterns | Co=1.78892 | Mass attenuation coefficient,: cm ^{2}/g | µ/p = 69.615 |

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