Name: | FREDRIKSSONITE | ||

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

Formula: | [Mg_{1.98}Fe_{0.02}][Mn_{0.78}Fe_{0.2}Al_{0.02}][BO_{3}]O_{2} | ||

Symmetry Class: | orthorhombic | ||

Space Group: | P bam | ||

Unit CellParameters: | a = 9.1980 | b = 12.5280 | c = 2.9650 | ||

Number of Formula Unit: | Z = 4 | Unit Cell Volume, Å: ^{3} | V = 341.66_{c} |

Number of Atomic Position: per full Unit Cell | P/U = 36 | Molar Volume, cm: ^{3}/mol | V = 51.45_{m} |

Number of Reflexes used in: Structure Determination | NR = 555 | X-ray density, g/cm^{3}: | p = 3.79 |

R-factor: | R = 0.0240 | MU, 1/cm: | µ = 98.059 |

Wave Length for Calculated: Powder Diffraction Patterns | Co=1.78892 | Mass attenuation coefficient,: cm ^{2}/g | µ/p = 25.844 |

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