metamorphic

Mica-rich schist

Mica schist, likely muscovite–biotite schist with quartz

AI-generated identification · may be incorrect

Silvery, glittery, foliated rock with visible flaky mica and quartz; mica hardness 2–3, quartz 7, overall variable hardness. The image suggests platy cleavage and a micaceous sheen; crystal structure is chiefly sheet silicates plus quartz.

Identified October 4, 2026More metamorphic →

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Physical properties

Formation & geological history

Forms when clay-rich sedimentary or igneous rocks undergo regional metamorphism, aligning mica into foliation. The exact age and formation locality cannot be determined from the image.

Uses & applications

Used as a decorative or landscaping stone and collected as a common metamorphic specimen; mica-bearing rock has limited industrial use compared with separated mica.

Geological facts

The bright flakes are likely mica, which splits into thin sheets; the rock’s layered, flaky texture is characteristic of schistosity.

Field identification & locations

Look for shiny, aligned mica flakes and a tendency to split along wavy foliation; common in metamorphic mountain belts worldwide. A photo cannot confirm mineral proportions or distinguish mica species reliably.