Card No: 12438       Created: 1/11/25    Last edition: 10/04/2026

Name: WHITEITE-(CaMgMg)
Specification: [1], structure type - jahnsite
Formula: CaMgMg2Al2[PO4]4(OH)2 · 8H2O
Symmetry Class: monoclinic-beta
Space Group: P 2/a
Unit Cell
Parameters:
a = 14.8237 | b = 7.0302 | c = 9.9460 | beta = 110.1000
Number of Formula Unit: Z = 2Unit Cell Volume, Å3: Vc = 973.29
Number of Atomic Position
per full Unit Cell
:
P/U = 108 Molar Volume, cm3/mol: Vm = 293.12
Number of Reflexes used in
Structure Determination
:

NR = 1402
X-ray density, g/cm3: p = 2.55
R-factor: R = 0.0436MU, 1/cm: µ = 94.922
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 37.203
Theta-Interval for CPDP: T/I = 1-45