arrojadite
noun
ar·ro·ja·dite
ˌarəˈjäˌdīt
plural -s
: a mineral Na2(Fe, Mn)5(PO4)4 consisting of a phosphate of sodium, iron, and manganese occurring in Brazil as dark green monoclinic masses
Word History
Etymology
Portuguese arrojadita, from Miguel Arrojado Lisbôa 20th century Brazilian geologist + Portuguese -ita -ite