bright coal

bright coal

[′brīt ‚kōl]
(geology)
A jet-black, pitchlike type of banded coal that is more compact than dull coal and breaks with a shell-shaped fracture; microscopic examination shows a consistency of more than 5% anthraxyllon and less than 20% opaque matter. Also known as bright-banded coal; brights.
References in periodicals archive ?
It Is a qualified privilege, the ALJ noted, that is subject to the balancing test in Bright Coal Co.
I rolled a handful of hard, bright coals aside, what might have amounted to five or six charcoal briquettes.