Card No: 11853       Created: 5/07/23    Last edition: 27/03/2026

Name: MULLITE
Specification: [21], syn
Formula: Al2(Al,Si)4O9.6
Symmetry Class: orthorhombic
Space Group: B b2(1)m
Unit Cell
Parameters:
a = 75.8170 | b = 7.6752 | c = 5.7686
Number of Formula Unit: Z = 16Unit Cell Volume, Å3: Vc = 3356.81
Number of Atomic Position
per full Unit Cell
:
P/U = 312 Molar Volume, cm3/mol: Vm = 126.37
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 3.13
R-factor: -MU, 1/cm: µ = 99.920
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 31.890
Theta-Interval for CPDP: T/I = 1-45