ˈvältəˌīt noun
( -s )
Etymology: Italian voltaita, from Alessandro Volta died 1827 Italian physicist + Italian -ita -ite
: a mineral (K,Fe) 3 Fe(SO 4 ) 3 .4H 2 O or HK 2 Fe 4 (Fe,Al) 3 (SO 4 ) 10 .13H 2 O consisting of a hydrous sulfate of potassium and iron