Name: | WHERRYITE | ||

Specification: | [1] | ||

Formula: | Pb_{7}Cu_{2}[SO_{4}]_{4}[SiO_{4}]_{2}(OH)_{2} | ||

Symmetry Class: | monoclinic-beta | ||

Space Group: | C 2/m | ||

Unit CellParameters: | a = 20.7890 | b = 5.7870 | c = 9.1420 | beta = 91.2700 | ||

Number of Formula Unit: | Z = 2 | Unit Cell Volume, Å: ^{3} | V = 1099.57_{c} |

Number of Atomic Position: per full Unit Cell | P/U = 82 | Molar Volume, cm: ^{3}/mol | V = 331.15_{m} |

Number of Reflexes used in: Structure Determination | NR = 1203 | X-ray density, g/cm^{3}: | p = 6.58 |

R-factor: | R = 0.0560 | MU, 1/cm: | µ = 1095.518 |

Wave Length for Calculated: Powder Diffraction Patterns | Cu=1.54056 | Mass attenuation coefficient,: cm ^{2}/g | µ/p = 166.598 |

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