出典:Wiktionary
出典:『Wiktionary』 (2015/11/29 11:36 UTC 版)
copaline (usually uncountable, 複数形 copalines)
出典:Wikipedia
出典:『Wikipedia』 (2009/08/05 17:20 UTC 版)
Copalite (or copaline), also termed fossil resin and Lowgate resin, is a naturally occurring organic substance found as irregular pieces of pale-yellow colour in the London Clay at Highgate Hill. It has a resinous aromatic odour when freshly broken, volatilizes at a moderate temperature, and burns readily with a yellow, smoky flame, leaving scarcely any ash.