metamorphic
Greenschist
Metamorphic rock (chlorite, epidote, actinolite, albite)
AI-generated identification · may be incorrectHardness 3-5, distinctive green color due to chlorite and epidote, sub-metallic to vitreous luster, foliated texture.
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Physical properties
Hardness 3-5, distinctive green color due to chlorite and epidote, sub-metallic to vitreous luster, foliated texture.
Formation & geological history
Formed by regional metamorphism of mafic igneous rocks like basalt under low-to-moderate temperature and pressure conditions.
Uses & applications
Used locally as crushed stone for construction, dimension stone, and as a decorative landscaping rock.
Geological facts
The green color that defines greenschist is imparted by abundant hydrous silicate minerals like chlorite and epidote.
Field identification & locations
Identified by its predominant green hue and foliated fabric; commonly found in ancient orogenic belts and subduction zone terranes.
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