A family of silicate minerals forming prism or needle-like crystals. Amphibole minerals generally contain iron, magnesium, calcium and aluminum in varying amounts along with silicon, oxygen, and water. Hornblende is a common dark green to black variety of amphibole; it is a component in many igneous and metamorphic rocks.
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Amphibolite
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Amphibolite
Amphibious Transport Dock
Amphibolite
