Card No: 10693       Created: 24/12/18    Last edition: 27/11/2019

Name: BREDIGITE
Specification: [2]
Formula: Ca7Mg[SiO4]4
Symmetry Class: orthorhombic
Space Group: P nnm
Unit Cell
Parameters:
a = 18.3810 | b = 6.7494 | c = 10.9033
Number of Formula Unit: Z = 4Unit Cell Volume, Å3: Vc = 1352.66
Number of Atomic Position
per full Unit Cell
:
P/U = 112 Molar Volume, cm3/mol: Vm = 203.69
Number of Reflexes used in
Structure Determination
:

NR = 2584
X-ray density, g/cm3: p = 3.37
R-factor: R = 0.0231MU, 1/cm: µ = 303.510
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 89.941
Theta-Interval for CPDP: T/I = 1-45