oneillite

== English == === Etymology === Named after Canadian geologist with the Geological Survey of Canada, John Johnston O'Neill (1886–1966), +‎ -ite. === Noun === oneillite (mineralogy) A trigonal-pyramidal yellowish brown mineral containing calcium, chlorine, hydrogen, iron, manganese, niobium, oxygen, silicon, sodium, and zirconium. === Further reading === David Barthelmy (1997–2026), “Oneillite”, in Webmineral Mineralogy Database. “oneillite”, in Mindat.org, Keswick, Va.: Hudson Institute of Mineralogy, 2000–2026.