Cochise College          Photos of Minerals

                          Geology Home Page                

                          Roger Weller, geology instructor

                          wellerr@cochise.edu
                                  copyright 2006-R.Weller
 

Mineral Information on:
arsenic

Chemical Group:    native element

Chemical Formula:   
As

Color:  tin-white; tarnishes to dark gray                    Streak:  same as color

Luster:  almost metallic

 

Hardness:  3.5             Specific Gravity:  5.7                 

Fracture:  uneven to fine granular

Cleavage:  present, but rarely seen

 

Crystal Forms and Habits:  Rhombohedral  (crystals rare)
     Usually granular massive

Mineral Associations:

Identifying Characteristics:

Uses:  arsenic ore

Occurrences: 

Toxicity:      when- very high              when inhaled- very high

Additional Information: