IPA: //ˈmæŋɡənaɪt//
KK: /ˈmæŋɡəˌnaɪt/
A dark gray to black mineral that contains manganese and is often found in North America and Europe.
Manganite is often used as a minor ore of manganese.
Manganite is derived from 'manganese' (from the Italian 'manganese', meaning the mineral) and the suffix '-ite' (meaning a mineral or rock). The word 'manganite' refers to a mineral composed primarily of manganese oxide.
Think of 'manganese' as the key element in this mineral, and remember that '-ite' indicates it's a type of mineral.