Cochise College          Photos of Minerals

                          Geology Home Page                

                          Roger Weller, geology instructor

                          wellerr@cochise.edu
                                  copyright 2006-R.Weller
 

Mineral Information on:
arsenopyrite

Chemical Group:    sulfarsenide

Chemical Formula:   
FeAsS

Color:  silver-white to steel-gray           Streak:  dark, grayish-black

Luster:  metallic     Transparency:  opaque

 

Hardness:  5.5 to 6            Specific Gravity:  5.9 to 6.2                

Fracture:  uneven      Tenacity:  brittle
 

Crystal Forms and Habits:  Orthorhombic  (small crystals common)
     Crystals may show repeated twinning.
     May be granular and compact

Mineral Associations:

Identifying Characteristics:  hardness and tin-white color

Uses:  arsenic ore

Occurrences: 

Toxicity:      when-               when inhaled-

Additional Information:  Arsenopyrite is also known as mispickel.