eifelite

== English == === Etymology === Named for type locality Eifel (Germany) +‎ -ite. === Noun === eifelite (mineralogy) A hexagonal-dihexagonal dipyramidal mineral containing magnesium, oxygen, potassium, silicon, and sodium. === Further reading === David Barthelmy (1997–2026), “Eifelite”, in Webmineral Mineralogy Database. “eifelite”, in Mindat.org, Keswick, Va.: Hudson Institute of Mineralogy, 2000–2026.