Cochise College          Photos of Minerals

                          Geology Home Page                

                          Roger Weller, geology instructor

                          [email protected]
                                  copyright 2006-R.Weller
 

Mineral Information on:
stilbite

Chemical Group:    silicate

Chemical Formula:    (Na₂,Ca)Al₂Si₆O₁₆.6H₂O

Color: white, cream, pink              Streak:   white

Luster:  vitreous, pearly on cleavage surfaces

Hardness:  3.5 to 4       Specific Gravity:   2.1 to 2.2           

Cleavage:  (010) perfect

Crystal Forms:  Monoclinic system
      Tends to form characteristic sheath-like bundles of crystals

Mineral Associations:  heulandite

Identifying Characteristics:

Uses:

Occurrences: in cavities within basalt 

Toxicity:      when-swallowed-                            when inhaled-

Additional Information: