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:    intermediate between
Na2Al2Si3O10.2H20 and 2CaAl2Si3O10.3H2O

Color:  white, colorless                                                                        


Hardness:   5        Specific Gravity:  2.29         


Crystal Forms:  Monoclinic system
     acicular and capillary crystals

Mineral Habits:  delicate divergent tufts 

Mineral Associations: found in amygdaloidal basalt with other zeolites

Identifying Characteristics:


Occurrences:  Pennsylvania, Colorado; Nova Scotia, India 

Toxicity:      when-swallowed- low        when inhaled- high

Additional Information: