Bournonite is a mineral that is primarily composed of lead and antimony sulfides. Although there are no direct synonyms to bournonite, it is sometimes referred to as "cogwheel ore" due to its unique crystal formation. Bournonite is also known as "koksharovite" in Russia and "cogwheel galena" in Germany. Other minerals that can be associated with bournonite include sphalerite, pyrite, chalcopyrite, and tetrahedrite. Bournonite can be found in various locations around the world, including Bolivia, Peru, Mexico, and Kazakhstan. Its shining metallic luster and distinctive crystal habit make it a favorite among mineral collectors and enthusiasts.