Name: | HUMBERSTONITE | ||

Specification: | [1] | ||

Formula: | K_{3}Na_{7}Mg_{2}[SO_{4}]_{6}[NO_{3}]_{2} · 6H_{2}O | ||

Symmetry Class: | trigonal | ||

Space Group: | R 3(-) | ||

Unit CellParameters: | a = 10.9055 | c = 24.3949 | ||

Number of Formula Unit: | Z = 3 | Unit Cell Volume, Å: ^{3} | V = 2512.59_{c} |

Number of Atomic Position: per full Unit Cell | P/U = 204 | Molar Volume, cm: ^{3}/mol | V = 504.47_{m} |

Number of Reflexes used in: Structure Determination | - | X-ray density, g/cm^{3}: | p = 2.25 |

R-factor: | R = 0.0910 | MU, 1/cm: | µ = 94.091 |

Wave Length for Calculated: Powder Diffraction Patterns | Cu=1.54056 | Mass attenuation coefficient,: cm ^{2}/g | µ/p = 41.816 |

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