Card No: 335       Created: 18/05/1990    Last edition: 29/11/2017

Name: ARSENOCLASITE
Specification: [1], structure type - arsenoclasite
Formula: Mn5(OH)4[AsO4]2
Symmetry Class: orthorhombic
Space Group: P 2(1)2(1)2(1)
Unit Cell
Parameters:
a = 18.2900 | b = 5.7500 | c = 9.3100
Number of Formula Unit: Z = 4Unit Cell Volume, Å3: Vc = 979.11
Number of Atomic Position
per full Unit Cell
:
P/U = 76 Molar Volume, cm3/mol: Vm = 147.44
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 4.21
R-factor: R = 0.0700MU, 1/cm: µ = 630.952
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 149.927
Theta-Interval for CPDP: T/I = 1-45