frondelite

== English == === Etymology === Named after American mineralogist Clifford Frondel (1907–2002), +‎ -ite. === Noun === frondelite (mineralogy) An orthorhombic-dipyramidal mineral containing hydrogen, iron, manganese, oxygen, and phosphorus. === Further reading === David Barthelmy (1997–2026), “Frondelite”, in Webmineral Mineralogy Database. “frondelite”, in Mindat.org, Keswick, Va.: Hudson Institute of Mineralogy, 2000–2026.