Amphiboles

Amphiboles: a group of minerals commonly found in Igneous Rocks—such as Hornblende and Arfvedsonite—or present in Metamorphic Rocks (formed through metamorphic processes), including Actinolite, Tremolite, Riebeckite, Glaucophane, and Anthophyllite.

Anfiboli
(Photo: Jan Helebrant/Wikimedia Commons, License CC BY-SA 2.0)

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