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出典:Wiktionary
See mineral. (This etymology is missing または incomplete. Please add to it, または discuss it at the 語源 scriptorium.)
maceral (複数形 macerals)
出典:Wikipedia
出典:『Wikipedia』 (2011/07/05 13:11 UTC 版)
A maceral is a component of coal or oil shale. The term 'maceral' in reference to coal is analogous to the use of the term 'mineral' in reference to igneous or metamorphic rocks. Examples of macerals are inertinite, vitrinite and liptinite.
Maceral