Cochise College          Photos of Minerals

                          Geology Home Page                

                          Roger Weller, geology instructor

                          wellerr@cochise.edu
                                  copyright 2010-R.Weller

 

Mineral Information on:
herrerite

Chemical Group:    carbonate

Chemical Formula: 
 
(Zn,Cu)CO3

Color:   apple green to dark green, pistachio green, emerald green                                                                      

Streak: yellowish gray

 

Hardness:    4 to 4.5             Specific Gravity:    4.3             

translucent
 

Luster:  vitreous to pearly

Cleavage:
 

Tenacity:  brittle

 

Crystal Forms:

Habits: massive, reniform

Mineral Associations:

Identifying Characteristics:

Uses:

Occurrences: 

Toxicity:      when-swallowed-                            when inhaled-

Additional Information:  might be thought of as a cuprian variety of smithsonite