What is another word for hercynite?
Pronunciation: [hˈɜːsɪnˌa͡ɪt] (IPA) 
Hercynite is a mineral that belongs to the spinel group. It is a rare mineral which is found in only a few locations around the world. Hercynite is often used as a refractory material for high-temperature applications because of its ability to withstand extreme temperatures. There are a few synonyms for the word hercynite including black spinel, ceylonite and pleonaste. Black spinel is named for its dark black color while ceylonite is named after the country where it was first discovered. Pleonaste comes from the Greek word "pleonas," which means abundant, and refers to the mineral's abundance in nature.
