Card No: 12001       Created: 14/04/24    Last edition: 27/03/2026

Name: TREMOLITE
Specification: [16], at 16.8 GPa
Formula: Ca2Mg5Si8O22(OH,F)2
Symmetry Class: monoclinic-beta
Space Group: C 2/m
Unit Cell
Parameters:
a = 9.2330 | b = 17.3320 | c = 5.0950 | beta = 105.4000
Number of Formula Unit: Z = 2Unit Cell Volume, Å3: Vc = 786.08
Number of Atomic Position
per full Unit Cell
:
P/U = 78 Molar Volume, cm3/mol: Vm = 236.74
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 3.44
R-factor: -MU, 1/cm: µ = 151.344
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 44.016
Theta-Interval for CPDP: T/I = 1-45