metamorphic

Weathered mica-rich schist

Mica schist, likely muscovite- or biotite-bearing; precise identification requires closer examination

AI-generated identification · may be incorrect

Brown-gray, coarse and foliated, with a reflective, flaky sheen suggesting mica. Mica has Mohs hardness about 2–3 and perfect basal cleavage; the rock’s hardness and density vary with its other minerals.

Identified October 8, 2026More metamorphic →

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Physical properties

Formation & geological history

Formed when clay-rich sedimentary or volcanic rock was buried and metamorphosed under heat and pressure. Its age cannot be determined from the image and depends on its source region.

Uses & applications

Schist is used as decorative building stone, paving, and landscaping material; attractive mica-rich pieces are collected or used ornamentally.

Geological facts

The glinting surface and aligned mineral flakes are characteristic of schistosity, a metamorphic fabric produced by directed pressure.

Field identification & locations

Look for visible, aligned mica flakes and a tendency to split along wavy layers; common in metamorphic belts worldwide. The image does not establish the exact mineral mix or locality.