How Do You Spell TESSELITE?
Pronunciation: [tˈɛsɪlˌa͡ɪt] (IPA) 
Tesselite is a mineral that belongs to the pyroxene group. Its chemical formula is Ca2(Mg,Fe)(Al,Fe,Si)2O6. The pronunciation of tesselite is [ˈtɛsəlaɪt]. The word is spelled with two "s" in the middle, not with one "s" as in "tellite". The spelling of the word is derived from the Greek word "tessera", which means "four". Tesselite is often found in volcanic rocks such as basalt and gabbro, and is a key component in the formation of igneous rocks.
