Card No: 1133       Created: 10/10/2001    Last edition: 23/07/2018

Name: DARAPIOSITE
Specification: [1], structure type - osumilite, Li, Zn
Formula: (Mn, Zr,Y)2K(Na,K)2(Li,Zn,Fe)3Si12O30
Symmetry Class: hexagonal
Space Group: P 6/mcc
Unit Cell
Parameters:
a = 10.2620 | c = 14.3070
Number of Formula Unit: Z = 2Unit Cell Volume, Å3: Vc = 1304.80
Number of Atomic Position
per full Unit Cell
:
P/U = 100 Molar Volume, cm3/mol: Vm = 392.96
Number of Reflexes used in
Structure Determination
:

NR = 447
X-ray density, g/cm3: p = 2.88
R-factor: R = 0.0310MU, 1/cm: µ = 162.413
Wave Length for Calculated
Powder Diffraction Patterns
:
Co=1.78892Mass attenuation coefficient,
cm2/g
:
µ/p = 56.439
Theta-Interval for CPDP: T/I = 1-45