trigonite

== English == === Etymology === This etymology is incomplete. You can help Wiktionary by elaborating on the origins of this term. ? + -ite === Noun === trigonite (mineralogy) A monoclinic-domatic mineral containing arsenic, hydrogen, lead, manganese, and oxygen. ==== References ==== David Barthelmy (1997–2026), “Trigonite”, in Webmineral Mineralogy Database.