neptunite

== English == === Etymology === From Neptune +‎ -ite. === Noun === neptunite (usually uncountable, plural neptunites) A black silicate mineral with chemical formula KNa2Li(Fe2+,Mn2+)2Ti2Si8O24 ==== Translations ==== === Further reading === David Barthelmy (1997–2026), “Neptunite”, in Webmineral Mineralogy Database. “neptunite”, in Mindat.org‎[1], Hudson Institute of Mineralogy, 2000–2026.