Definition of todorokite in English:

todorokite

noun

Mineralogy
  • A manganese-containing mineral which occurs typically as aggregates of black crystals and is a major constituent of underwater manganese nodules.

Origin

1930s. From the name of the Todoroki mine, Hokkaido, Japan, where the mineral was first identified + -ite.

Pronunciation

todorokite

/tɒdəˈrɒkʌɪt//tɒˈdɒrəkʌɪt/