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Cannel coal

Cannel coal from the Pennsylvanian of NE Ohio

Cannel coal or candle coal is a type of bituminous coal,[1] also classified as terrestrial type oil shale.[2][3][4] Due to its physical morphology and low mineral content cannel coal is considered to be coal but by its texture and composition of the organic matter it is considered to be oil shale.[5] Although historically the term cannel coal has been used interchangeably with boghead coal, a more recent classification system restricts cannel coal to terrestrial origin, and boghead coal to lacustrine environments.[2]

  1. ^ Huddle, J.W.; et al. (1963). Coal Reserves of Eastern Kentucky. Washington DC: USGS Geological Survey Bulletin 1120. p. 7.
  2. ^ a b Hutton(1987)
  3. ^ Dyni (2006), pp. 3–4
  4. ^ Speight (2012), pp. 6–7
  5. ^ Han et al. (1999)

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