Brøgger, W.C. (1888):Om en norsk forekomst af pseudobrookit i store krystaller. Geol.Fören. Förhandl.Stockholm 10: 21-24
Comments
Smith (1969)has showed taht the "pesudobrookite from Havredal in fact consist of an extremely fine-grained mixture of hematite and rutile with lesser amonut of quartz and chlorite