thalcusite

== English == === Etymology === This etymology is incomplete. You can help Wiktionary by elaborating on the origins of this term. ? + -ite === Noun === thalcusite (mineralogy) A tetragonal-ditetragonal dipyramidal mineral containing copper, iron, sulfur, and thallium. ==== References ==== David Barthelmy (1997–2026), “Thalcusite”, in Webmineral Mineralogy Database.