Card No: 12396       Created: 4/12/25    Last edition: 27/04/2026

Name: BARITOLAMPROPHYLLITE
Specification: [4], structure type - lamprophyllite
Formula: (Ba,Sr,K,Na)2Na(Na,Mn,Fe,Ca)2Ti3O2[Si2O7]2(OH)2
Symmetry Class: monoclinic-beta
Space Group: C 2/m
Unit Cell
Parameters:
a = 19.8574 | b = 7.1034 | c = 5.4063 | beta = 96.6000
Number of Formula Unit: Z = 2Unit Cell Volume, Å3: Vc = 757.52
Number of Atomic Position
per full Unit Cell
:
P/U = 60 Molar Volume, cm3/mol: Vm = 228.14
Number of Reflexes used in
Structure Determination
:

NR = 1417
X-ray density, g/cm3: p = 3.63
R-factor: R = 0.0293MU, 1/cm: µ = 614.969
Wave Length for Calculated
Powder Diffraction Patterns
:
Co=1.78892Mass attenuation coefficient,
cm2/g
:
µ/p = 169.228
Theta-Interval for CPDP: T/I = 1-45