Card No: 12025       Created: 28/05/24    Last edition: 28/03/2026

Name: FERROBERAUNITE
Specification: [1], structure type - beraunite
Formula: Fe2+Fe3+5 [PO4]4(OH)5 · 6H2O
Symmetry Class: monoclinic-beta
Space Group: C 2/c
Unit Cell
Parameters:
a = 20.8708 | b = 5.1590 | c = 19.2263 | beta = 93.3000
Number of Formula Unit: Z = 4Unit Cell Volume, Å3: Vc = 2066.67
Number of Atomic Position
per full Unit Cell
:
P/U = 216 Molar Volume, cm3/mol: Vm = 311.21
Number of Reflexes used in
Structure Determination
:

NR = 2301
X-ray density, g/cm3: p = 2.92
R-factor: R = 0.0202MU, 1/cm: µ = 126.953
Wave Length for Calculated
Powder Diffraction Patterns
:
Co=1.78892Mass attenuation coefficient,
cm2/g
:
µ/p = 43.513
Theta-Interval for CPDP: T/I = 1-45