Cochise College          Photos of Minerals

                          Geology Home Page                

                          Roger Weller, geology instructor

                          wellerr@cochise.edu
                                  copyright 2010-R.Weller

 

Mineral Information on:
francevillite

Chemical Group:  vanadate

Chemical Formula: 
 
(Ba,Pb)(UO2)2(VO4)2.5H2O   radioactive!

Color:   brown-red, orange, lemon yellow, greenish yellow, green, brown

Streak:

 

Hardness:    3             Specific Gravity:    4.55             

Luster: adamantine

Cleavage:

 

Crystal Forms:  Orthorhombic system

Mineral Associations:

Identifying Characteristics:

Uses:

Occurrences: 

Toxicity:      when-swallowed-                            when inhaled-

Additional Information: