Card No: 2762       Created: 11/05/1988    Last edition: 31/05/2018

Name: MARGAROSANITE
Specification: [1], structure type - margarosanite
Formula: PbCa2Si3O9
Symmetry Class: triclinic
Space Group: P 1(-)
Unit Cell
Parameters:
a = 6.7690 | b = 9.5750 | c = 6.7180 | alpha = 110.3600 | beta = 102.9800 | gamma = 83.0200
Number of Formula Unit: Z = 2Unit Cell Volume, Å3: Vc = 397.33
Number of Atomic Position
per full Unit Cell
:
P/U = 30 Molar Volume, cm3/mol: Vm = 119.66
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 4.31
R-factor: -MU, 1/cm: µ = 566.669
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 131.530
Theta-Interval for CPDP: T/I = 1-35