Card No: 10370       Created: 20/09/17    Last edition: 15/12/2017

Name: PIEMONTITE
Specification: [10], structure type - epidote, syn
Formula: Ca2Al2.15Fe0.1Mn0.7Si3O12OH
Symmetry Class: monoclinic-beta
Space Group: P 2(1)/m
Unit Cell
Parameters:
a = 8.8727 | b = 5.6686 | c = 10.1682 | beta = 115.5000
Number of Formula Unit: Z = 2Unit Cell Volume, Å3: Vc = 461.67
Number of Atomic Position
per full Unit Cell
:
P/U = 42 Molar Volume, cm3/mol: Vm = 139.04
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 3.44
R-factor: -MU, 1/cm: µ = 264.698
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 76.969
Theta-Interval for CPDP: T/I = 1-45