"Iltisite" is a mineral discovered in 1979 and named after the German mineralogist Hans Richard Heinrich Iltis. Its pronunciation, according to the International Phonetic Alphabet (IPA), is [ˈɪltɪsaɪt], with the stress on the first syllable. The spelling of the word follows English phonetic rules, with "i" pronounced as in "sit," "t" pronounced as in "tea," and the final "e" is silent. Interestingly, the mineral's chemical formula is Fe2(MoO4)3, containing iron, molybdenum, and oxygen atoms arranged in a crystal lattice structure.