ˈdikə̇nsəˌnīt noun
( -s )
Etymology: William Dickinson, 19th century American clergyman and mineralogist + English -ite
: a green mineral H 2 Na 6 (Mn,Fe,Ca,Mg) 14 (PO 4 ) 12 .H 2 O consisting of foliated hydrous acid phosphate chiefly of manganese, iron, and sodium (sp. gr. 3.34)