Cochise College          Photos of Minerals

                          Geology Home Page                

                          Roger Weller, geology instructor

                                  copyright 2006-R.Weller

Mineral Information on:

Chemical Group:    sulfate

Chemical Formula:   

Color: colorless, white, pale blue, reddish or greenish         Streak:  white

Luster:  vitreous          Transparency:  transparent to translucent


Hardness:  3 to 3.5       Specific Gravity:  3.95 t0 3.97           Fracture:

Cleavage: (001) perfect, (210)  good


Crystal Forms:  Orthorhombic system
        Crystals are tabular; may be elongated

Mineral Associations:  gypsum, anhydrite, halite, limestone

Identifying Characteristics: pale blu color

Uses:  source of strontium

Occurrences:  Ohio, New York, California 

Toxicity:      when-swallowed- moderate            when inhaled- moderate

Additional Information: