Cochise College          Photos of Minerals

                          Geology Home Page                

                          Roger Weller, geology instructor

                          wellerr@cochise.edu
                                  copyright 2010-R.Weller

 

 

Mineral Information on:
lazulite

Chemical Group:  phosphate

Chemical Formula:
(Mg,Fe)Al2(PO4)2(OH)2

Color:  azure blue, bright indigo blue, pale sky blue                   

Streak:  pale blue to white

 

Hardness:  5.5 to 6                 Specific Gravity:    3.1             

Fracture:  uneven

Cleavage: 1 direct, distinct
 

Luster:  vitreous to dull

 

Crystal Forms: Monoclinic system, distorted octahedrons, tabular crystals

Mineral Associations:

Identifying Characteristics:

Uses:

Occurrences: 

Toxicity:      when-swallowed-                            when inhaled-

Additional Information: