Card No: 3995       Created: 05/07/1995    Last edition: 28/04/2017

Name: ROGGIANITE
Specification: [1], DF, ZL
Formula: Ca2[Be(OH)2Al2Si4O13] · 2.5H2O
Symmetry Class: tetragonal
Space Group: I 4/mcm
Unit Cell
Parameters:
a = 18.3300 | c = 9.1600
Number of Formula Unit: Z = 8Unit Cell Volume, Å3: Vc = 3077.66
Number of Atomic Position
per full Unit Cell
:
P/U = 256 Molar Volume, cm3/mol: Vm = 231.72
Number of Reflexes used in
Structure Determination
:

NR = 772
X-ray density, g/cm3: p = 2.34
R-factor: R = 0.0610MU, 1/cm: µ = 110.889
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 47.445
Theta-Interval for CPDP: T/I = 1-45