Cochise College          Photos of Minerals

                          Geology Home Page                

                          Roger Weller, geology instructor

                                  copyright 2006-R.Weller

Mineral Information on:

Chemical Group:    sulfide

Chemical Formula:   

Color:  lead-gray, tarnishes blackish            Streak: lead-gray

Luster:  metallic                 Transparency:  opaque

Hardness:  2         Specific Gravity:   4.63               

Cleavage: one direction

Tenacity:  flexible but not elastic (stays bent); slightly sectile


Crystal Forms and Habits: Orthorhombic system
    Stibnite crystals range from stout to slender prismatic.

Mineral Associations:  realgar, orpiment, galena, marcasite, pyrite, cinnabar, calcite

Identifying Characteristics:  Crystals are often bent or twisted

Uses:  antimony ore

Occurrences:  China, Mexico, Bolivia, Argentina 

Toxicity:      when-swallowed- high        when inhaled- very high

Additional Information: