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 ?
The cannel coal example may have been added at the same time.
However, with the necklace from Poltalloch, Argyll & Bute, a set of 15 small and narrow cannel coal beads probably represents the addition of a plain fusiform bead bracelet, made by a local person, to create a parure of black jewellery.
The one from Law Park, Balnacarron, Fife, for example, contained jet, cannel coal, and a distinctive high-yttrium lignite, used for spacer plates as well as beads.
Disc beads appear almost exclusively to be of cannel coal and shale, which in one case (Barns Farm, Fife) has been proven to be local.
1993 for discussion of the methodology), while the physical characteristics are consistent with cannel coal (Davis 1993: table 1).