metamorphic

Likely mica-rich schist with associated rock fragments

Mica schist, composed mainly of quartz and mica (muscovite and/or biotite); exact identification is uncertain from the image

AI-generated identification · may be incorrect

Visible glittering flakes and uneven, foliated texture suggest mica. Mica has Mohs hardness 2–3 and perfect basal cleavage; quartz, if present, is hardness 7. Color ranges from dark brown to golden tan; luster is predominantly shiny or pearly.

Identified October 14, 2026More metamorphic →

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At a glance

Common name: Likely mica-rich schist with associated rock fragments
Scientific name: Mica schist, composed mainly of quartz and mica (muscovite and/or biotite); exact identification is uncertain from the image
Category: metamorphic
Identified: October 14, 2026
Method: Standard

AI Estimated Value

About $1–$10 for small, common specimens; higher prices require confirmed identification, attractive crystals, or notable locality.

Not an official valuation

AI estimate for general interest only — not an appraisal. Actual value depends on condition, provenance, and market demand. Verify with a professional before buying, selling, or insuring.

This identification was generated by AI and may contain errors. Verify important details before relying on them — and never use an AI result to judge whether a specimen is safe to handle. Read the full disclaimer

Physical properties

Formation & geological history

Schist forms when pre-existing rocks are recrystallized under heat and pressure, commonly during mountain-building. Its age depends on the locality and cannot be determined from the image.

Uses & applications

Mica is used in electrical and industrial products; quartz-rich schist is sometimes used as decorative stone or aggregate. These small pieces appear most suitable for collecting.

Geological facts

The reflective flecks are likely mica crystals aligned during metamorphism, giving schist its characteristic sheen and fabric.

Field identification & locations

Look for visible platy flakes and a tendency to split along mica-rich layers; distinguish it from glittery material by checking for natural, irregular foliation. Schists occur worldwide in metamorphic mountain belts.