Card No: 11939       Created: 15/03/24    Last edition: 27/03/2026

Name: ACTINOLITE
Specification: [11], Sc, DN
Formula: (K,[])(Ca,Na)2(Mg,Fe,Sc)5(Si,Al)8O22(OH)2
Symmetry Class: monoclinic-beta
Space Group: C 2/m
Unit Cell
Parameters:
a = 9.8517 | b = 18.0881 | c = 5.2850 | beta = 104.8000
Number of Formula Unit: Z = 2Unit Cell Volume, Å3: Vc = 910.50
Number of Atomic Position
per full Unit Cell
:
P/U = 84 Molar Volume, cm3/mol: Vm = 274.21
Number of Reflexes used in
Structure Determination
:

NR = 935
X-ray density, g/cm3: p = 3.05
R-factor: R = 0.0587MU, 1/cm: µ = 212.778
Wave Length for Calculated
Powder Diffraction Patterns
:
Co=1.78892Mass attenuation coefficient,
cm2/g
:
µ/p = 69.848
Theta-Interval for CPDP: T/I = 1-45