metamorphic
Mica Schist
Schist
Foliated texture, shiny, silvery to dark color, composed mainly of platy minerals like muscovite or biotite mica, hardness varies but typically 2.5-4
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Physical properties
Foliated texture, shiny, silvery to dark color, composed mainly of platy minerals like muscovite or biotite mica, hardness varies but typically 2.5-4
Formation & geological history
Formed by regional metamorphism of shale or mudstone under intermediate to high temperature and pressure
Uses & applications
Decorative stone, landscaping, sometimes used as a building material or source of mica
Geological facts
The name 'schist' comes from the Greek word 'schizein' meaning 'to split', referring to its tendency to easily split into thin layers.
Field identification & locations
Identified by its strong foliation (schistosity) and abundant visible mica flakes. Commonly found in areas of past or present mountain building.
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