Cochise College          Photos of Minerals

                          Geology Home Page                

                          Roger Weller, geology instructor

                                  copyright 2010-R.Weller


Mineral Information on:

Chemical Group:   silicate

Chemical Formula: 

Color:    bronze yellow to gold yellow                                                                    


Luster: submetallic, pearly

Tenacity:  brittle


Hardness:   3              Specific Gravity:   3.3 to 3.6               Fracture:

Cleavage:  mica-like cleavage


Crystal Forms:  Orthorhombic System, elongated crystals

Habits:    starlike sprays

Mineral Associations:

Identifying Characteristics:


Occurrences:  Norway; Greenland: Pikes Peak, Colorado

Toxicity:      when-swallowed-                            when inhaled-

Additional Information: