Bornite
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Description
A common ore of copper iron sulfite. Bornite was named after an Austrian mineralologist, Ignaz von Born. It has been found in Tasmania, Chile, Peru, Mexico, and the U.S. (Montana, Arizona). The naturally brown ore alters on weathering to form Chalcocite and other copper corrosion products which produces an iridescent surface containing purple, blue, and green colors.
Synonyms and Related Terms
peacock ore
Other Properties
Cleavage = imperfect Fracture = concoidal Luster = metallic
| Composition | Cu5FeS4 |
|---|---|
| Mohs Hardness | 3.0 |
| Density | 4.9-5.3 |
| Molecular Weight | 501.84 |
Hazards and Safety
Tarnishes in air and moisture
Additional Information
Web Minerals: Bornite
Sources Checked for Data in Record
- Encyclopedia Britannica, http://www.britannica.com Comment: "bornite." Encyclopædia Britannica. 2004. Encyclopædia Britannica Premium Service. 8 Dec. 2004 .
- Website address 1 Comment: nindat.org at http://www.mindat.org/min-727.html (accessed Dec. 8, 2004)
- Wikipedia, the free encyclopedia, at http://www.wikipedia.com Comment: http://en.wikipedia.org/wiki/Bornite (accessed Dec. 8, 2004)
- Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997