Bone coal

Jump to navigationJump to search
  1. Coal with a high ash content, almost rock. See also: bone Syn: true middlings
  2. Coal that has a high ash content. It is hard and compact. Syn: bony coal
  3. Argillaceous partings in coal, sometimes called slate. AGI

Source: Dictionary of Mining, Mineral, and Related Terms

Sponsor: NordVPN - Virtual Private Network