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Anthracite coal         Go on to: #1 | #2 | #3 | #4
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Basic Key
QFL Clastic Key

Partially decayed organic matter
     Black, shiny, homogeneous, breaking with a conchoidal fracture.
Tectonic Association
None specific
Formation & Environments
     Anthracite coal forms when bituminous coal undergoes very low grade metamorphism, accompanied by structural deformation. The fixed carbon content under these conditions reaches 85-95%.      If anthracite is metamorphosed further it turns into graphite.

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Last Update: 7/18/00

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