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Mineralpedia Details for Graphite

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Graphite

Graphite

Named after the Greek word grapho, meaning “to write,” in reference to the minerals ability to be used as a writing utensil. Graphite is a common mineral with hundreds of localities where it forms from the metamorphism of sedimentary carbon-rich material by the reduction of carbon compounds, and can also be found as a primary mineral in igneous rock. Some of the many localities for graphite can be found in the United States, Canada, Russia, Sri Lanka, Germany, England, and Mexico. Graphite has a distinct greasy feel to it.

 Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/graphite.pdf

Formula
Crystal System
Hexagonal 
Crystal Habit
Foliated, Tabular, Earthy 
Cleavage
Perfect, None, None 
Luster
Sub Metallic 
Color
iron black, dark gray, black, steel gray 
Streak
black 
Class
Hexagonal - Dihexagonal Dipyramidal 
Fracture
Sectile 
Hardness
1.5-2 
WebMineral
View Graphite 
Mindat
View Graphite 

GRAPHITE from Ticonderoga, Essex Co., New York

GRAPHITE
            from Ticonderoga, Essex Co.,  New York

Graphite crystals to 1cm across asociated with Augite and Scapolite.

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Graphite from Leib's Moonstone mine, Essex Co., New York, United States

Graphite
            from Leib's Moonstone mine, Essex Co., New York, United States

Graphite crystals are rather uncommon. These crystals are free-standing and to about 6mm. 

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Graphite from Dillon, Montana, United States

Graphite
            from Dillon, Montana, United States

Soft, greasy feeling mass of pure Graphite. 

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