Card No: 12062       Created: 3/06/24    Last edition: 29/03/2026

Name: PROTOCASEYITE
Specification: [1]
Formula: [Al4(OH)6(H2O12][V10O28] · 8H2O
Symmetry Class: triclinic
Space Group: P 1(-)
Unit Cell
Parameters:
a = 9.4350 | b = 10.7420 | c = 11.2050 | alpha = 75.4000 | beta = 71.1000 | gamma = 81.3000
Number of Formula Unit: Z = 1Unit Cell Volume, Å3: Vc = 1036.41
Number of Atomic Position
per full Unit Cell
:
P/U = 114 Molar Volume, cm3/mol: Vm = 624.27
Number of Reflexes used in
Structure Determination
:

NR = 4786
X-ray density, g/cm3: p = 2.52
R-factor: R = 0.0254MU, 1/cm: µ = 215.308
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 85.403
Theta-Interval for CPDP: T/I = 1-45