metamorphic
Schist
Metamorphic Schist
AI-generated identification · may be incorrectHardness 3-4 on Mohs scale, grayish-green or brown color, foliated texture with visible sparkling mica flakes, greasy or pearly luster.
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Physical properties
Hardness 3-4 on Mohs scale, grayish-green or brown color, foliated texture with visible sparkling mica flakes, greasy or pearly luster.
Formation & geological history
Formed through regional metamorphism of shale or pelitic igneous rocks under moderate to high temperatures and pressures.
Uses & applications
Used primarily as crushed stone in construction, landscaping, and occasionally decorative stone.
Geological facts
Schist contains prominent parallel alignment of platy minerals like biotite and muscovite, giving it a distinct planar property called schistosity.
Field identification & locations
Identify by its pronounced foliation and glittering mica grains on split surfaces; commonly found in mountain-building belts worldwide.
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