Cochise College           Photos of Minerals

                          Geology Home Page

                          Roger Weller, geology instructor

                          wellerr@cochise.edu
                                  copyright 2004-R.Weller

Pyrolusite
pyrolusite crystals
Pyrolusite is manganese oxide.  It is a black, rather hard mineral (6 to 6.5) and is a major ore of manganese.


Photo is copyright free for non-commercial educational uses. Just credit photo to R.Weller/Cochise College.