Card No: 3716       Created: 21/03/1991    Last edition: 25/04/2017

Name: PLANCHEITE
Specification: [1], DF
Formula: Cu8[Si4O11]2(OH)4 · 0.43H2O
Symmetry Class: orthorhombic
Space Group: P cnb
Unit Cell
Parameters:
a = 19.0430 | b = 20.1290 | c = 5.2690
Number of Formula Unit: Z = 4Unit Cell Volume, Å3: Vc = 2019.69
Number of Atomic Position
per full Unit Cell
:
P/U = 172 Molar Volume, cm3/mol: Vm = 304.13
Number of Reflexes used in
Structure Determination
:

NR = 429
X-ray density, g/cm3: p = 3.82
R-factor: R = 0.1290MU, 1/cm: µ = 149.350
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 39.135
Theta-Interval for CPDP: T/I = 1-45