Name: | GYPSUM | ||

Specification: | [1], structure type - gypsum | ||

Formula: | CaSO_{4} · 2H_{2}O | ||

Symmetry Class: | monoclinic-beta | ||

Space Group: | *I 2/a | ||

Unit CellParameters: | a = 5.6790 | b = 15.2020 | c = 6.5220 | beta = 118.4300 | ||

Number of Formula Unit: | Z = 4 | Unit Cell Volume, Å: ^{3} | V = 495.15_{c} |

Number of Atomic Position: per full Unit Cell | P/U = 48 | Molar Volume, cm: ^{3}/mol | V = 74.56_{m} |

Number of Reflexes used in: Structure Determination | NR = 610 | X-ray density, g/cm^{3}: | p = 2.31 |

R-factor: | R = 0.0360 | MU, 1/cm: | µ = 140.204 |

Wave Length for Calculated: Powder Diffraction Patterns | Cu=1.54056 | Mass attenuation coefficient,: cm ^{2}/g | µ/p = 60.727 |

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