Card No: 2070       Created: 28/09/1993    Last edition: 13/01/2009

Name: HYDROMAGNESITE
Specification: [2], syn
Formula: Mg5[CO3]4(OH)2 · 4H2O
Symmetry Class: monoclinic-beta
Space Group: P 2(1)/c
Unit Cell
Parameters:
a = 10.1050 | b = 8.9540 | c = 8.3780 | beta = 114.4400
Number of Formula Unit: Z = 2Unit Cell Volume, Å3: Vc = 690.12
Number of Atomic Position
per full Unit Cell
:
P/U = 74 Molar Volume, cm3/mol: Vm = 207.84
Number of Reflexes used in
Structure Determination
:

NR = 2598
X-ray density, g/cm3: p = 2.29
R-factor: R = 0.0520MU, 1/cm: µ = 40.029
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 17.492
Theta-Interval for CPDP: T/I = 1-45