Card No: 3907       Created: 13/05/1996    Last edition: 13/01/2009

Name: QUARTZ
Specification: [9], alpha, structure type - alpha-quartz, at 773oK
Formula: SiO2
Symmetry Class: trigonal
Space Group: *P 3(1)21
Unit Cell
Parameters:
a = 4.9628 | c = 5.4360
Number of Formula Unit: Z = 3Unit Cell Volume, Å3: Vc = 115.95
Number of Atomic Position
per full Unit Cell
:
P/U = 9 Molar Volume, cm3/mol: Vm = 23.28
Number of Reflexes used in
Structure Determination
:

NR = 265
X-ray density, g/cm3: p = 2.58
R-factor: R = 0.0260MU, 1/cm: µ = 88.907
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 34.452
Theta-Interval for CPDP: T/I = 1-45