metamorphic
Schist
Metamorphic Schist
AI-generated identification · may be incorrectHardness 3-4 on Mohs scale, grayish silver color, pearly to silky luster, foliated crystal structure with visible mica flakes.
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Physical properties
Hardness 3-4 on Mohs scale, grayish silver color, pearly to silky luster, foliated crystal structure with visible mica flakes.
Formation & geological history
Formed through regional metamorphism of pelitic sedimentary rocks under elevated temperatures and pressures.
Uses & applications
Used primarily as a decorative aggregate in landscaping and occasionally in construction fill.
Geological facts
Schist displays a distinctive foliation called schistosity, allowing it to split easily into thin flakes.
Field identification & locations
Identify in the field by its sparkling, platy mineral grains and parallel alignment; found globally in ancient mountain belts.
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