Graphite identification and geology

Browse this collection and related resources

• Browse all mineral identification entries — Compare this entry with the complete GeoMiner minerals collection.
• Previous: Gold — Native element prized since prehistory. Extremely malleable and ductile; one ounce can be drawn into 80 km of wire.
• Next: Grossular — Calcium-aluminum garnet occurring in a wide range of colors. Tsavorite green and hessonite orange are prized gem varieties.
• Molybdenite
• Galena
• Ilmenite
• Black metallic minerals — Place this specimen in a broader field-identification workflow.
• Metallic minerals — Place this specimen in a broader field-identification workflow.
• Galena vs Graphite — Compare observable properties and safer field tests.
• Biotite vs Graphite — Compare observable properties and safer field tests.

Sources, scope & corrections

These authoritative resources support category-level nomenclature, terminology, identification methods, and safety. When a specimen-specific safety warning appears, the public-health source listed here directly supports that precaution. They are not line-by-line citations for every other property on this entry, and natural specimens vary.

Editorial owner

GeoMiner

Last updated

2026-03-30T14:37:08.120091+00:00

Review status

Published; not independently peer-reviewed

• IMA–CNMNC List of Mineral Names — International Mineralogical Association. Official mineral-name, nomenclature, and classification records.
• Mineral ID Key — Mineralogical Society of America. Physical-property identification methods, repeat-testing guidance, and limitations.

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Common questions

What is Graphite?

Native carbon with a layered crystal structure giving it extreme softness and lubricating properties. Used in pencils and as a lubricant.

How can you identify Graphite?

Compare several properties rather than relying on colour alone. This entry records colour: Black, steel-gray; lustre: Metallic to earthy; streak: Black; Mohs hardness: 1-2; cleavage: Perfect basal; crystal system: Hexagonal; transparency: Opaque. Confirm an important identification with additional field tests or qualified laboratory work.

How does Graphite form?

Forms by metamorphism of organic matter in sedimentary rocks at high temperatures or in pegmatites.

Where is Graphite commonly found?

China, India, Brazil, Sri Lanka; found in metamorphic rocks schists, gneisses, marbles .

What is Graphite commonly confused with?

Graphite may be confused with Molybdenite, Galena, Ilmenite. Compare multiple diagnostic properties because colour and surface appearance can overlap.