Card No: 6719       Created: 11/08/2006    Last edition: 13/01/2009

Name: POTASSICRICHTERITE
Specification: [5], syn
Formula: K(NaCa)Mg5Si8O22(OH)2
Symmetry Class: monoclinic-beta
Space Group: C 2/m
Unit Cell
Parameters:
a = 10.0439 | b = 17.9883 | c = 5.2708 | beta = 104.8030
Number of Formula Unit: Z = 2Unit Cell Volume, Å3: Vc = 920.68
Number of Atomic Position
per full Unit Cell
:
P/U = 80 Molar Volume, cm3/mol: Vm = 277.28
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 3.00
R-factor: R = 0.0570MU, 1/cm: µ = 127.500
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 42.553
Theta-Interval for CPDP: T/I = 1-45