leonardite
Noun
Meaning
English Wikipedia has an article on:leonarditeWikipedia
leonardite (plural leonardites)
(mineralogy) A dark, vitreous mineraloid produced by surface oxidation of lignite
Noun
English Wikipedia has an article on:leonarditeWikipedia
leonardite (plural leonardites)
(mineralogy) A dark, vitreous mineraloid produced by surface oxidation of lignite