出典:Wiktionary
vitrinite (countable かつ uncountable, 複数形 vitrinites)
出典:Wikipedia
出典:『Wikipedia』 (2011/04/03 06:33 UTC 版)
Vitrinite is one of the primary components of coals and most sedimentary kerogens. Vitrinite is a type of maceral, where "macerals" are organic components of coal analogous to the "minerals" of rocks. Vitrinite has a shiny appearance resembling glass (vitreous). It is derived from the cell-wall material or woody tissue of the plants from which coal was formed. Chemically, it is composed of polymers, cellulose and lignin.