Cochise College          Photos of Minerals

                          Geology Home Page                

                          Roger Weller, geology instructor

                                  copyright 2010-R.Weller


Mineral Information on:

Chemical Group:  phosphate

Chemical Formula:  
Ca(UO2)2(PO4)2.2-6H2O    Radioactive!

Color:   lemon-yellow, greenish yellow, canary yellow                                                                      


Hardness:   1 to 2              Specific Gravity:     3.5            

Fracture:   uneven

Luster:  vitrous to pearly to dull

Cleavage:  1 direction

Crystals: Tetragonal system, forms square plates

Crystal Forms:  Tetragonal system: tabular square plates
                               forms pseudomorphic crystals after autunite

Mineral Associations:

Identifying Characteristics:  bright yellow green color, square plates

Uses:  uranium ore


Toxicity:      when-swallowed-                            when inhaled-

Additional Information:  HIGHLY FLUORESCENT- bright green