cannel coal


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Related to cannel coal: Candle coal, boghead coal

cannel coal:

see coalcoal,
fuel substance of plant origin, largely or almost entirely composed of carbon with varying amounts of mineral matter. Types

There is a complete series of carbonaceous fuels, which differ from each other in the relative amounts of moisture, volatile matter,
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.

Cannel Coal

 

a variety of sapropelic fossil coal that is black with a grayish or slightly brown cast and a dull satiny luster. The fracture is flat-conchoidal and smooth, and the structure is massive. Because of the considerable density and viscosity of cannel coal, it can be used as a material for artistic and household items. Under a microscope, cannel coal is an aggregate chiefly of microspores and sparse fragments of megaspores in a brown basic mass without fusite or larger plant remains. The basic mass is sapropelic with an admixture of humus matter. Cannel coal has a high hydrogen content (6–9 percent) and can be lit by a match. It is found in coal seams in the form of intercalations or lenses.

cannel coal

[′kan·əl ‚kōl]
(geology)
A fine-textured, highly volatile bituminous coal distinguished by a greasy luster and blocky, conchoidal fracture; burns with a steady luminous flame. Also known as cannelite.
References in periodicals archive ?
Younger in age than the famous assemblage from the lycopsid stumps at Joggins (Pennsylvanian: Bashkirian: Langsettian), vertebrate fossils from Florence generally are better preserved than those from loggins and more or less coeval with the Linton cannel coal, so that meaningful comparisons between the Florence and Linton assemblages could be made.
It was, however, with cannel coal that the mine registered its greatest success.
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. In reply to Huxley on 26 September, 1870, Dawson wrote, "Indications of spore-cases are rare, except in certain coarse shaly coals and portions of coals, and in the roofs of the seams.