bornite

Also known as erubescite, peacock copper

Bornite, also known as peacock ore, is a sulfide mineral with chemical composition that crystallizes in the orthorhombic system (pseudo-cubic). It is an important copper ore.

Key facts

Mineral.name: Bornite
Mineral.category: Sulfide mineral
Mineral.image: Bornite-Quartz-135210.jpg
Mineral.imagesize: 260px
Mineral.caption: Lightly iridescent bornite crystal on quartz needles, from Kazakhstan
Mineral.formula: Cu5FeS4
Mineral.IMAsymbol: Bn
Mineral.molweight: 501.88 g/mol
Mineral.strunz: 2.BA.10
Mineral.system: Orthorhombic
Mineral.class: Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m)
Mineral.symmetry: Pbca
Mineral.unit cell: a = 10.95 Å, b = 21.862 Å, c = 10.95 Å; Z = 16
Mineral.color: Copper red, bronze brown, purple
Mineral.habit: Granular, massive, disseminated – Crystals pseudocubic, dodecahedral, octahedral
Mineral.twinning: Penetration twins on [111]
Mineral.cleavage: Poor on [111]
Mineral.fracture: Uneven to subconchoidal

via Wikipedia infobox

Wikidata facts

Image: Bornite-105006.jpg

Show 8 more facts

Commons category: Bornite
Nickel-Strunz '10th ed', review of (9th ed/ 2009 update): 2.BA.15
Nickel-Strunz 9th edition (updated 2009): 2.BA.10
chemical formula: Cu₅FeS₄
Mohs' hardness: 3
density: 5.10
IMA Mineral Symbol: Bn
Strunz 8th edition (series ID, updated): II/A.02

Sources (4)

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Article

10 sections

Contents

Appearance
Mineralogy
Structure
Composition
Form and twinning
Occurrence
History and etymology
See also
References
Bibliography

Bornite, also known as peacock ore, is a sulfide mineral with chemical composition that crystallizes in the orthorhombic system (pseudo-cubic). It is an important copper ore.

==Appearance== thumb|left|Tarnish of bornite Bornite has a brown to copper-red color on fresh surfaces that tarnishes to various iridescent shades of blue to purple in places. Its striking iridescence gives it the nickname peacock copper or peacock ore.