Card No: 3691       Created: 06/06/1995    Last edition: 30/08/2016

Name: PIEMONTITE
Specification: [5], structure type - epidote, Sr
Formula: Ca1.74Sr0.16Al1.83Fe0.06Mn1.15Si3O12OH
Symmetry Class: monoclinic-beta
Space Group: P 2(1)/m
Unit Cell
Parameters:
a = 8.8700 | b = 5.6990 | c = 10.2010 | beta = 115.3000
Number of Formula Unit: Z = 2Unit Cell Volume, Å3: Vc = 466.20
Number of Atomic Position
per full Unit Cell
:
P/U = 44 Molar Volume, cm3/mol: Vm = 140.41
Number of Reflexes used in
Structure Determination
:

NR = 2810
X-ray density, g/cm3: p = 3.53
R-factor: R = 0.0310MU, 1/cm: µ = 304.147
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 86.226
Theta-Interval for CPDP: T/I = 1-45