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Mineralpedia Details for Bornite

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Bornite

Bornite

Name after Austria mineralogist Ignaz Elder von Born. Bornite is a common mineral that is widespread and can be found in thousands of localities worldwide, some of which, for fine crystals, include in the United States, England, Zimbabwe, Austria, Kazakhstan, Morocco, the United States, South Africa, and Australia. It occurs with and in mafic igneous rocks, contact metamorphic skarn deposits, pegmatites, mid- to high-temperature hydrothermal deposits, and in sedimentary cupriferous shale. Bornite is only stable below around 200 degrees Celsius. Associated minerals include chalcopyrite, pyrite, copper and iron sulfides, garnets, calcite, wollastonite, and quartz.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/bornite.pdf

Formula
Cu5FeS4 
Crystal System
Orthorhombic 
Crystal Habit
Massive - Granular, Reniform, Granular 
Cleavage
Imperfect, None, None 
Luster
Metallic 
Color
copper red, bronze brown, purple 
Streak
grayish black 
Class
Orthorhombic - Dipyramidal 
Fracture
Conchoidal 
Hardness
WebMineral
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Mindat
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Bornite from Dzhezkazgan mine, Karagandy, Kazakhstan

Bornite
            from Dzhezkazgan mine, Karagandy, Kazakhstan

Well formed nicely iridescent crystals to 3mm.

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Bornite from Eagle Picher mine, Shullsburg, Lafayette Co., Wisconsin, United States

Bornite
            from Eagle Picher mine, Shullsburg, Lafayette Co., Wisconsin, United States

Large plate of bluish to purple iridescent Bornite with crystals to 6mm.

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Bornite from Bisbee, Cochise Co., Arizona, United States

Bornite
            from Bisbee, Cochise Co., Arizona, United States

Large chunk rich in Bornite and other sulfides.

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Bornite from Franklin, Sussex Co., New Jersey, United States

Bornite
            from Franklin, Sussex Co., New Jersey, United States

A large heavy mass of very coarse iridescent Bornite associated with a bit of green Willemite and Franklinite.

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Bornite from Butte dist., Silver Bow Co., Montana, United States

Bornite
            from Butte dist., Silver Bow Co., Montana, United States

A beautiful specimen of almost pure bluish, homogenous and fine grained mass with dark grey Chalcocite and a band of 1-4mm crystals of pyrite and chalcopyrite. Cut smooth on one side to show mineralization. 1 lb 8 oz.

Bornite generally contains about 63% copper and is an important ore of copper. It is a supergene enrichment product of  chalcopyrite. Bornite was a significant ore at Butte.

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Bornite from Mt. Con mine, Butte dist., Silver Bow Co., Montana, United States

Bornite
            from Mt. Con mine, Butte dist., Silver Bow Co., Montana, United States

Large iridescent mass of solid Bornite with minor Chalcopyrite. May cost a little extra to ship.

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Bornite from Superior, Pinal Co., Arizona, United States

Bornite
            from Superior, Pinal Co., Arizona, United States

Blue, iridescent crystalline mass of this important ore of copper.

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Bornite from San Martín mine, Sombrerete, Zacatecas, Mexico

Bornite
            from San Martín mine, Sombrerete, Zacatecas, Mexico

Blue iridescent mass of Bornite with leaf Silver shooting up the center.

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Bornite from Cooney mine, Catron Co., New Mexico, United States

Bornite
            from Cooney mine, Catron Co., New Mexico, United States

Rich blue to purple to silvery brassy coarse Bornite. An ore of Copper.

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Bornite from Grasberg mine, Carstensz Mts, New Guinea, Papua, Indonesia

Bornite
            from Grasberg mine, Carstensz Mts, New Guinea, Papua, Indonesia

Highly iridescent example of this rich copper ore specimen. The locality is the largest producing gold mine in the world and third largest copper mine.

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Bornite from Bristol, Hartford Co., Connecticut, United States

Bornite
            from Bristol, Hartford Co., Connecticut, United States

Massive bluish grey Bornite veins with Quartz.

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