- vitrain coal
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витреновый уголь
English-Russian dictionary of geology. 2011.
vitrain coal
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coal classification — ▪ process any of various ways in which coal is grouped. Most classifications are based on the results of chemical analyses and physical tests, but some are more empirical in nature. Coal classifications are important because they provide… … Universalium
Vitrain — is a type of coal. Its combustion leads to ash containing high levels of Germanium tetrachloride … Wikipedia
vitrain — [vi′trān΄] n. [< L vitrum, glass + ain, as in FUSAIN] a type of black, glassy, cubic bituminous coal … English World dictionary
coal — coalless, adj. /kohl/, n. 1. a black or dark brown combustible mineral substance consisting of carbonized vegetable matter, used as a fuel. Cf. anthracite, bituminous coal, lignite. 2. a piece of glowing, charred, or burned wood or other… … Universalium
vitrain — n shiny black bands, thicker than 0.5 mm, of subbituminous and higher rank banded coal. DISCUSSION Vitrain, attributed to the coalification of relatively large fragments of wood and bark, may range up to about 30 mm (approximately 1 in.) thick in … Coke&Coal Terminology
coal — n a brown to black combustible sedimentary rock (in the geological sense) composed principally of consolidated and chemically altered plant remains. DISCUSSION Conditions required for formation of coal are believed to include accumulation of… … Coke&Coal Terminology
vitrain — /vi trayn/, n. the material of which the friable, vitreous layers in banded bituminous coal are composed. Cf. clarain, durain. [1915 20; < L vitr(um) glass + ain, as in FUSAIN] * * * … Universalium
vitrain — ˈvi.ˌtrān noun ( s) Etymology: vitr + ain (as in fusain) : a constituent of banded bituminous coal that has a vitreous or glossy fracture compare clarain, durain, fusain … Useful english dictionary
bright coal — coal consisting of alternating layers of clarain and vitrain. * * * … Universalium
attrital coal — n the ground mass or matrix of banded coal in which vitrain and, commonly, fusain layers as well, are embedded or enclosed. DISCUSSION Layers in banded coal, often referred to as bands, are commonly 1 to 30 mm thick. Attrital coal in banded coal… … Coke&Coal Terminology
nonbanded coal — n consistently fine granular coal essentially devoid of megascopic layers. DISCUSSION Nonbanded coal may be interbedded with common banded coal, or form a discrete layer at the top or at the bottom of the seam, or may compose the entire seam. It… … Coke&Coal Terminology
