Name: | PIEMONTITE | ||

Specification: | [1], structure type - epidote, at 25^{o}C | ||

Formula: | [Ca_{1.8}Sr_{0.2}][Al_{1.91}Fe_{0.33}Mn_{0.82}][SiO_{4}]_{3}(OH) | ||

Symmetry Class: | monoclinic-beta | ||

Space Group: | P 2(1)/m | ||

Unit CellParameters: | a = 8.8840 | b = 5.6840 | c = 10.2020 | beta = 115.2300 | ||

Number of Formula Unit: | Z = 2 | Unit Cell Volume, Å: ^{3} | V = 466.02_{c} |

Number of Atomic Position: per full Unit Cell | P/U = 44 | Molar Volume, cm: ^{3}/mol | V = 140.35_{m} |

Number of Reflexes used in: Structure Determination | NR = 6636 | X-ray density, g/cm^{3}: | p = 3.53 |

R-factor: | R = 0.0410 | MU, 1/cm: | µ = 265.501 |

Wave Length for Calculated: Powder Diffraction Patterns | Co=1.78892 | Mass attenuation coefficient,: cm ^{2}/g | µ/p = 75.158 |

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