Cochise College          Photos of Minerals

                          Geology Home Page                

                          Roger Weller, geology instructor

                          [email protected]
                                  copyright 2006-R.Weller
 

Mineral Information on:
axinite

Chemical Group:    silicate

Chemical Formula:   Ca₇Mn₄B₂(SiO₄)₈

Color:  clove-brown, plum-blue. pearly-gray, honey-yellow, greenish yellow                     

Streak:   uncolored         Luster:  highly glassy
 

Hardness:  6.5 to 7        Specific Gravity:   3.27-3.29         Fracture:  conchoidal

Cleavage:  (010) distinct

Crystal Forms and Habits:  Triclinic system
     Crystals are broad an thin-edged
     Habits include lamellar, granular

Mineral Associations:  found in cavities in granite

Identifying Characteristics:

Uses: in rare cases as a gemstone

USA occurrences:
New Jersey
     Franklin
Pennsylvania
California
     Feather River Canyon
     Coarse Gold, Madera County
     Taylorsville, Genesee Valley

WORLD-WIDE occurrences :
Mexico
     Sierra Juarez district, Baja California
     Mina Olivia, Laguna Hanson, Baja California
     Los Gavilanes, Baja California
France
     St. Christophe, Bourg d'Oisans, Isere
England
     Botallack, Wheal Cock, Trewellard, and Lostwithiel, Cornwall
Japan
     Obira mine, Oita Prefecture
     Toroku mine, Miyazaki Prefecture
Brazil
    

Toxicity:      when-swallowed-                            when inhaled-

Additional Information: