ˌarəˈjäˌdīt noun
( -s )
Etymology: Portuguese arrojadita, from Miguel Arrojado Lisbôa 20th century Brazilian geologist + Portuguese -ita -ite
: a mineral Na 2 (Fe,Mn) 5 (PO 4 ) 4 consisting of a phosphate of sodium, iron, and manganese occurring in Brazil as dark green monoclinic masses