Card No: 11869       Created: 31/03/23    Last edition: 27/03/2026

Name: THEOPHRASTITE
Specification: [3], structure type - brucite, mathematical model
Formula: Ni(OH)2
Symmetry Class: trigonal
Space Group: P 3(-)m1
Unit Cell
Parameters:
a = 3.3575 | c = 4.8091
Number of Formula Unit: Z = 1Unit Cell Volume, Å3: Vc = 46.95
Number of Atomic Position
per full Unit Cell
:
P/U = 5 Molar Volume, cm3/mol: Vm = 28.28
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 3.28
R-factor: R = 0.0800MU, 1/cm: µ = 166.493
Wave Length for Calculated
Powder Diffraction Patterns
:
Co=1.78892Mass attenuation coefficient,
cm2/g
:
µ/p = 50.789
Theta-Interval for CPDP: T/I = 1-45