Card No: 12314       Created: 30/07/25    Last edition: 06/04/2026

Name: HEFLIKITE
Specification: [1]
Formula: Ca2[Al2Sc][Si2O7][SiO4]O(OH)
Symmetry Class: monoclinic-beta
Space Group: P 2(1)/m
Unit Cell
Parameters:
a = 8.9383 | b = 5.6830 | c = 10.1903 | beta = 115.0000
Number of Formula Unit: Z = 2Unit Cell Volume, Å3: Vc = 468.97
Number of Atomic Position
per full Unit Cell
:
P/U = 44 Molar Volume, cm3/mol: Vm = 141.24
Number of Reflexes used in
Structure Determination
:

NR = 958
X-ray density, g/cm3: p = 3.54
R-factor: R = 0.0862MU, 1/cm: µ = 305.383
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 86.355
Theta-Interval for CPDP: T/I = 1-45