Graphite

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Natural form of the mineral graphite, an allotrope of elemental carbon, with a submetallic luster, hardness of 1-2, and a greasy feel which will stain fingers. Widely known for its use as the "lead" in pencils. This specimen is about 5 centimeters wide.
Natural form of the mineral graphite, an allotrope of elemental carbon, with a submetallic luster, hardness of 1-2, and a greasy feel which will stain fingers. Widely known for its use as the "lead" in pencils. This specimen is about 5 centimeters wide.
Filename: GLM20010.jpg
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