Card No: 12412       Created: 31/10/25    Last edition: 27/04/2026

Name: KULIOKITE-(Y)
Specification: [2]
Formula: (Y,Yb,Er)4Al[SiO4]2(OH)2.5F4.5
Symmetry Class: monoclinic-beta
Space Group: I m
Unit Cell
Parameters:
a = 4.3213 | b = 14.8123 | c = 8.6857 | beta = 102.9000
Number of Formula Unit: Z = 2Unit Cell Volume, Å3: Vc = 541.99
Number of Atomic Position
per full Unit Cell
:
P/U = 46 Molar Volume, cm3/mol: Vm = 163.23
Number of Reflexes used in
Structure Determination
:

NR = 3202
X-ray density, g/cm3: p = 4.75
R-factor: R = 0.0301MU, 1/cm: µ = 416.972
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 87.847
Theta-Interval for CPDP: T/I = 1-45