Card No: 11011       Created: 8/08/19    Last edition: 02/04/2026

Name: SILICATE_HYDRATE_Na_K_Ca
Specification: [1], DN
Formula: NaKCa2Si8O19 · 5H2O
Symmetry Class: orthorhombic
Space Group: P n2(1)m
Unit Cell
Parameters:
a = 6.5850 | b = 23.7760 | c = 7.0250
Number of Formula Unit: Z = 2Unit Cell Volume, Å3: Vc = 1099.87
Number of Atomic Position
per full Unit Cell
:
P/U = 76 Molar Volume, cm3/mol: Vm = 331.25
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 2.30
R-factor: -MU, 1/cm: µ = 112.944
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 49.168
Theta-Interval for CPDP: T/I = 1-45