metamorphic
Green Slate or Metamorphic Rock
Metamorphic rock (chlorite/actinolite-bearing)
Hardness: 3-5 on the Mohs scale depending on specific mineral content; Color: Light to bluish-green; Luster: Dull to sub-vitreous; Structure: Fine-grained, foliated.
- Hardness
- 3-5 on the Mohs scale depending on specific mineral content
- Color
- Light to bluish-green
- Luster
- Dull to sub-vitreous
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Physical properties
Hardness: 3-5 on the Mohs scale depending on specific mineral content; Color: Light to bluish-green; Luster: Dull to sub-vitreous; Structure: Fine-grained, foliated.
Formation & geological history
Formed through the regional metamorphism of pelitic sediments or basaltic volcanic rocks under moderate pressure and temperature conditions.
Uses & applications
Used primarily as decorative aggregate, landscaping stone, and occasionally in construction or local craft.
Geological facts
Green coloration in such rocks is often imparted by iron-bearing minerals such as chlorite, epidote, or actinolite.
Field identification & locations
Commonly found in mountainous or tectonically active regions. Identify in the field by its distinctive green hue and fine-grained texture.
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