Actinolite [ ☐Ca2(Mg4.5-2.5FeII0.5-2.5)Si8O22(OH)2 ]

Image of Actinolite

Material properties

Formula ☐Ca2(Mg4.5-2.5FeII0.5-2.5)Si8O22(OH)2
Abbreviation Act
Classifications Ferro-actinolite-Tremolite (series), Actinolite root name group, Minerals containing OH
Luminescence emitters Cr, Mn
Spectra Reflectance (2)
IMA Status Approved/redefined (IMA 2012 s.p.)
Search other databases webmineral.com, mindat.org, rruf.info, fluomin.org, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database
Crystal symmetry Monoclinic, Point group 2/m, Space group C2/m (#12)
Tags Mineral, Silicate , Hydroxide

Composition

Element Wt%
H 0.24
Na 0.59
Mg 9.71
Ca 8.6
Ti 0.11
Mn 0.13
Fe 8.58
Al 1.39
Si 25.64
O 45.01
Total: 100

References for Actinolite

Reference
Lines Spectra Images
Bakhtin 1985 1 0 0
Bakhtin & Moroshkin 1986 1 0 0
Pejcic et al. 2022 (EP2022-5804) 0 1 0
Pejcic et al. 2021 (EP2021-1148) 0 1 0

Specimens of Actinolite

Name Owner Materials Image Spectra Techniques
M1064 Scheelite CSIRO Actinolite, Scheelite 2 Reflectance
MES177 Tremolite / Actinolite NVCL, AuScope Limited Actinolite, Clinochlore, Fe, Quartz, Tremolite 2 Reflectance
MES181 Scheelite CSIRO Actinolite, Scheelite 1 Reflectance
NR-ACT-02 Actinolite CSIRO Actinolite, Clinochlore, Fe, Magnetite, Quartz, Tremolite 2 Reflectance