natural coke

natural coke

[′nach·rəl ′kōk]
(geology)
Coal that has been naturally carbonized by contact with an igneous intrusion, or by natural combustion. Also known as black coal; blind coal; carbonite; cinder coal; coke coal; cokeite; finger coal; native coal.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
"Figure out how to make a natural Coke or Pepsi--with or without calories--and you'll have a long-term winner on your hands."