|
|
|
|
|
|
|
|
||
|
|
|||
|
|
|||
|
|
|
Name: |
bornite |
|
|||
|
Class: |
Sulfides |
||||
|
Chemistry: |
Cu5FeS4 |
||||
|
Color(s): |
copper-red, bronze-brown, tarnishes to deep blue-violet ... metallic |
||||
|
Hardness: |
3 |
SpecGrav: |
4.9-5.1 |
||
|
Fracture: |
uneven brittle |
Cleavage: |
none |
||
|
Crystal: |
isometric - crystals rare ... cubic, dodecahedral, octahedral |
||||
|
Envronment: |
can occur with carbonatites or in hydrothermal veins, and with other ores |
||||
|
Association: |
calcite, barite, galena, quartz, chalcopyrite, chalcocite, pyrite |
||||
|
Locals: |
CO, MN, AR, USA / Canada / Morocco / Germany / Poland / England / Chile |
||||
|
Misc: |
It was named after Ignaz vonBorn (1742-1791), mineralogist. |
||||
|
Photos |
|||||
|
|
|
|
|
|
|
|
|
|
