Actinote (or actinolite)
Calcium amphibole group - double chain inosilicates
Formule chimique :
Ca(Mg,Fe)5Si8O22(OH)2.
Système cristallin :
Monoclinic
Etymologie :
From the Greek actinos which means "ray" in relation to its fibrous habitus.
Dureté :
5 – 6
Densité :
3.05
Propriétés physiques :
Propriétés chimiques :
Poorly soluble in hydrochloric acid (HCl).
Formule chimique :
Ca(Mg,Fe)5Si8O22(OH)2.
Habitus :
Actinote crystals often occur as acicular or fibrous clusters (asbestos).
Gîtologie :
Determination :
Difficult
Utilisation :
none
Actinote (or actinolite) belongs to the group of calcic amphiboles and forms a continuous series with tremolite and ferro-actinote.
Worldwide, the most beautiful actinote crystals come from Madagascar, Finland, USA (New York State) and Tanzania.
In France, actinote is found in the Alps (Oisans, Isère).
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