delessite

== English == === Etymology === From Delesse +‎ -ite, after Achille Delesse === Noun === delessite (countable and uncountable, plural delessites) (mineralogy) A magnesium-rich form of chamosite that is a member of the chlorite group. ==== Derived terms ==== === Further reading === David Barthelmy (1997–2026), “Delessite”, in Webmineral Mineralogy Database. “delessite”, in Mindat.org, Keswick, Va.: Hudson Institute of Mineralogy, 2000–2026.