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.

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.
