Cochise College          Photos of Minerals

                          Geology Home Page                

                          Roger Weller, geology instructor

                                  copyright 2006-R.Weller

Mineral Information on:

Chemical Group:    arsenide

Chemical Formula:   

Color:  pale copper-red          

Streak:  pale brownish-black        Luster:  metallic 

Transparency:  opaque 


Hardness:  5 to 5.5             Specific Gravity:  7.33 to 7.67               

Fracture:   uneven       Tenacity:  brittle

Crystal Forms and Habits: Hexagonal system (crystals rare)
     Usually massive

Mineral Associations:  smaltite 

Identifying Characteristics: 

Uses:  nickel ore     

Occurrences:  Cobalt, Ontario, Canada

Toxicity:      when-swallowed-          when inhaled-

Additional Information: