Cochise College          Photos of Minerals

                          Geology Home Page                

                          Roger Weller, geology instructor

                                  copyright 2006-R.Weller

Mineral Information on:

Chemical Group:   silicate  (zeolite)   

Chemical Formula:   

Color:  colorless, white, pale gray, pale green, pale yellow, pale red             


Hardness:  5 to 5.5        Specific Gravity:  2.22 to 2.29              

Fracture:  sub-conchoidal          Tenacity:  brittle

Luster:  vitreous     

Cleavage:  slightly cubic        Transparency:  transparent to nearly opaque


Crystal Forms and Habits: Isometric system
   Commonly forms trapezohedrons   

Mineral Associations:  found with other zeolites; also prehnite and calcite 

Identifying Characteristics:


Occurrences:  New Jersey, Colorado; Nova Scxotia   

Toxicity:      when-swallowed-               when inhaled-

Additional Information: