Cochise College          Photos of Minerals

                          Geology Home Page                

                          Roger Weller, geology instructor

                                  copyright 2010-R.Weller


Mineral Information on:

Chemical Group:  silicate

Chemical Formula: 
Pb(UO2)[SiO4].H2O    mineral is radioactive!

Color:   ocher yelliow, brownish yellow, amber brown, lemon yellow, reddish orange

Streak:  pale yellow brown

Luster:  sub-adamantine, greasy

Tenacity:  brittle

transparent to opaque


Hardness:   4 to 5              Specific Gravity:   5.83 to 6.5              

Cleavage:  perfect cleavage


Crystal Forms:  Monoclinic system

Habits:  small radial sprays of crystals

Mineral Associations:

Identifying Characteristics:



Toxicity:      when-swallowed-                            when inhaled-

Additional Information: