grattarolaite

== English == === Etymology === From Grattarola +‎ -ite, from Giuseppe Grattarola, an Italian mineralogist. === Noun === grattarolaite (mineralogy) A trigonal-ditrigonal pyramidal mineral containing iron, oxygen, and phosphorus. ==== References ==== David Barthelmy (1997–2026), “Grattarolaite”, in Webmineral Mineralogy Database.