manjiroite
A mineral name in geology; a manganese oxide mineral. Technical term used in mineralogy.
Manjiroite is a type of manganese oxide mineral.
Modern standard kanji spelling for the mineral manjiroite.
Old-style kanji spelling using 萬; encountered in older mineralogical texts.
Named after the Japanese mineralogist Manjirō Watanabe (万次郎). The exact derivation is uncertain beyond the eponym.