Cochise College          Photos of Minerals

                          Geology Home Page                

                          Roger Weller, geology instructor

                          [email protected]
                                  copyright 2006-R.Weller
 

Mineral Information on:
brookite

Chemical Group:    oxide

Chemical Formula:    TiO₂

Color:  brown, reddish-brown, yellowish-brown, dark brown, black            

Streak:  uncolored to gray or pale yellow

Luster:   metallic-adamantine to sub-metallic

Hardness:  5.5 to 6           Specific Gravity:  3.87 to 4.08                  

Tenacity:  brittle   Transparency:  translucent to nearly opaque 
 

Crystal Forms and Habits:  Orthorhombic system
     4-sided prisms capped with pyramids; also pseudo-octahedral.

Mineral Associations:

Identifying Characteristics:

Uses:  source of titanium

Occurrences: Magnet Cove, Hot Springs, Arkansas

Toxicity:     

Additional Information: