Cochise College          Photos of Minerals

                          Geology Home Page                

                          Roger Weller, geology instructor

                                  copyright 2006-R.Weller

Mineral Information on:

Chemical Group:   silicate   

Chemical Formula:   

Color:   white or white tinted by green, blue, yellow, gray or brown         Streak:  white


Hardness:  6            Specific Gravity:  3.01 to 3.09              

Fracture:  uneven to subconchoidal        Tenacitry:  brittle

Luster:  vitreous to greasy, also pearly

Cleavage:  2 directions-good        Transparency:  translucent to transparent


Crystal Forms and Habits:  Triclinic system  

Mineral Associations:  found in granite pegmatites

Identifying Characteristics:

Uses:  source of lithium

Occurrences:    Maine, Connecticut, California

Toxicity:      when-swallowed-               when inhaled-

Additional Information: