humic coal

humic coal

[′hyü·mik ′kōl]
(geology)
A coal whose attritus is composed mainly of transparent humic degradation material.
References in periodicals archive ?
14 m) developed in a paragenetic relationship with humic coal in the coal measure strata of the second member ([J.
In the Haishwian mine, the sapropelic-humic oil shale has developed in a paragenetic relationship with humic coal in the second member ([J.
His response indicates what we now accept to be the case for the petrographic composition of most Pennsylvanian humic coals (Teichmuller 1982), with the important observation by Dawson that the samples on which Huxley had fixed his gaze were the exception: spore-rich cannel coals.