Geocronite is a rare mineral found in certain deposits around the world. This lead sulfate mineral is often associated with other minerals, such as sphalerite, galena, and pyrite. The mineral is named after the geologic time scale, with "geo" meaning earth and "cronite" meaning time. Some synonyms for geocronite include lead sulfate, galenite, and mineral sulfate. Other similar minerals that might be found in geological formations alongside geocronite include anglesite, lanarkite, and linarite. When identifying geocronite and other minerals, geologists and interested hobbyists might also come across other technical terms and jargon, such as cleavage, streak, luster, and crystal structure.