Card No: 1963       Created: 19/07/1990    Last edition: 21/03/2017

Name: HEWETTITE
Specification: [1], DN
Formula: CaV6O16 · 8[H2O]
Symmetry Class: monoclinic-beta
Space Group: P 2(1)/m
Unit Cell
Parameters:
a = 12.2900 | b = 3.5900 | c = 11.1740 | beta = 97.2400
Number of Formula Unit: Z = 1Unit Cell Volume, Å3: Vc = 489.08
Number of Atomic Position
per full Unit Cell
:
P/U = 32 Molar Volume, cm3/mol: Vm = 294.59
Number of Reflexes used in
Structure Determination
:

NR = 175
X-ray density, g/cm3: p = 2.42
R-factor: R = 0.1700MU, 1/cm: µ = 278.116
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 114.810
Theta-Interval for CPDP: T/I = 1-45