groutite

== English == === Etymology === This etymology is incomplete. You can help Wiktionary by elaborating on the origins of this term. ? + -ite === Noun === groutite (mineralogy) An orthorhombic-dipyramidal blue black mineral containing hydrogen, manganese, and oxygen. ==== References ==== David Barthelmy (1997–2026), “Groutite”, in Webmineral Mineralogy Database.