metamorphic

Graphite-rich schist (likely graphite ore)

Graphite-bearing schist; predominantly graphitic carbon (C) with mica, quartz, and possible feldspar

AI-generated identification · may be incorrect

Dark gray to black, platy and flaky with a bright metallic to submetallic sheen; commonly fol||||Hardness 1–2 for graphite-rich surfaces, though associated silicates are harder (up to ~7). Graphite has hexagonal crystal structure, perfect basal cleavage, and very low specific gravity (~2.2).

Identified August 12, 2026More metamorphic →

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At a glance

Common name: Graphite-rich schist (likely graphite ore)
Scientific name: Graphite-bearing schist; predominantly graphitic carbon (C) with mica, quartz, and possible feldspar
Category: metamorphic
Identified: August 12, 2026
Method: Standard

AI Estimated Value

About $1–$10 for common fragments; $10–$50 for attractive hand specimens. Assay-grade graphite ore value depends on purity and tonnage.

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

Formed when carbon-rich sedimentary rocks were metamorphosed, recrystallizing organic carbon into graphite. Such rocks may range from Precambrian to younger metamorphic ages; age cannot be determined from the image.

Uses & applications

Graphite is used in refractories, lubricants, batteries, electrodes, and pencils; attractive schist specimens are collected, though these pieces appear mostly ore-grade rather than gem material.

Geological facts

Graphite marks the rock with a dark streak and greasy feel; it can soil fingers, unlike metallic sulfides. The shiny flakes may also include biotite or muscovite, so a streak and hardness test are useful.

Field identification & locations

The angular, foliated fragments strongly support schist or graphite-rich metamorphic rock. Around 28.5°N, 77.2°E, transported construction aggregate or imported ore is more likely than local bedrock; confirm with a black streak, softness, and absence of magnetism.