Card No: 568       Created: 06/04/1990    Last edition: 14/02/2020

Name: BOBIERRITE
Specification: [1], "distorted" structure type - vivianite, syn
Formula: Mg3[PO4]2 · 8H2O
Symmetry Class: monoclinic-beta
Space Group: C 2/c
Unit Cell
Parameters:
a = 4.6670 | b = 27.9260 | c = 10.0670 | beta = 105.0100
Number of Formula Unit: Z = 4Unit Cell Volume, Å3: Vc = 1267.27
Number of Atomic Position
per full Unit Cell
:
P/U = 84 Molar Volume, cm3/mol: Vm = 190.83
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 2.05
R-factor: R = 0.0410MU, 1/cm: µ = 54.223
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 26.478
Theta-Interval for CPDP: T/I = 1-45