thumb|right|Mcgillite specimen in the Redpath Museum, [[McGill University.]]
thumb|right|Mcgillite specimen in the Redpath Museum, [[McGill University.]]
Mcgillite is a rare, monoclinic, pseudohexagonal mineral of the Pyrosmalite group, with the formula . It was first approved in 1979, and is named for McGill University.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).