Card No: 3350       Created: 17/05/1988    Last edition: 09/12/2014

Name: ORTHOCLASE
Specification: [2], sanidinized
Formula: KAlSi3O8
Symmetry Class: monoclinic-beta
Space Group: C 2/m
Unit Cell
Parameters:
a = 8.5640 | b = 13.0300 | c = 7.1749 | beta = 116.1000
Number of Formula Unit: Z = 4Unit Cell Volume, Å3: Vc = 719.00
Number of Atomic Position
per full Unit Cell
:
P/U = 52 Molar Volume, cm3/mol: Vm = 108.27
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 2.57
R-factor: -MU, 1/cm: µ = 124.491
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 48.433
Theta-Interval for CPDP: T/I = 1-45