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Bornite Mineral Data
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General Bornite Information
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 Chemical Formula: |
Cu5FeS4 |
| Composition: |
Molecular Weight = 501.84 gm |
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Iron 11.13 % Fe |
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Copper 63.31 % Cu |
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Sulfur 25.56 % S |
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______ |
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100.00 % |
| Empirical Formula: |
Cu5Fe2+S4 |
| Environment: |
Disseminated in igneous intrusions and a primary and secondary mineral in copper ore veins. |
| IMA Status: |
Valid Species (Pre-IMA) 1725 |
| Locality: |
Cornwall, England and Arizona porphyry copper deposits. Link to MinDat.org Location Data. |
| Name Origin: |
Named after the Austrian mineralogist, I. von Born (1742-1791). |
| Name Pronunciation: |
Bornite  |
| Synonym: |
ICSD 1963 |
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PDF 42-1405 |
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Bornite Image |
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Images:
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Images:
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Isomertieite Arsenopalladinite Gold Bornite
Comments: Light grayish grain of intimately intergrown isomertieite and arsenopalladinite (in the center of the picture), with pale yellow gold and brownish to violet bornite. Polished section (from microprobe analysis) in reflected light.
Location: Noril'sk, Putoran Mts, Taymyrskiy Autonomous Okrug, Eastern-Siberian Region, Russia.
Scale: Picture size 0.1 mm.
© Thomas Witzke / Abraxas-Verlag |
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Images:
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Briartite Catamarcaite Bornite
Comments: Briartite-type phase (Bri) in close association with catamarcaite (Ct) lining a cavity in massive bornite (Bn) - chalcocite (Cc) ore; Sp is sphalerite (CanMin v44:1481).
Location: Bornite-rich ore from old dumps near the La Rosario vein, Capillitas epithermal deposit, Catamarca Province, Argentina..
Scale: See Image.
© Canadian Mineralogist |
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Bornite Crystallography
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| Axial Ratios: |
a:b:c =0.5008:1:0.5008 |
| Cell Dimensions: |
a = 10.95, b = 21.862, c = 10.95, Z = 16; V = 2,621.31 Den(Calc)= 5.09 |
| Crystal System: |
Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P bca |
| X Ray Diffraction: |
By Intensity(I/Io): 1.937(1), 3.18(0.6), 2.74(0.5), |
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Physical Properties of Bornite
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| Cleavage: |
{111} Imperfect |
| Color: |
Copper red, Bronze brown, Purple. |
| Density: |
4.9 - 5.3, Average = 5.09 |
| Diaphaneity: |
Opaque |
| Fracture: |
Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz). |
| Habit: |
Granular - Generally occurs as anhedral to subhedral crystals in matrix. |
| Habit: |
Massive - Granular - Common texture observed in granite and other igneous rock. |
| Habit: |
Reniform - "Kidney like" in shape (e.g.. hematite). |
| Hardness: |
3 - Calcite |
| Luminescence: |
Non-fluorescent. |
| Luster: |
Metallic |
| Magnetism: |
Magnetic after heating |
| Streak: |
grayish black |
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Optical Properties of Bornite
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| RL Anisotrophism: |
Weak. |
| RL Color: |
Brown, pinkish. |
| RL Pleochroism: |
Weak but noticeable. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Bornite in Air
| λ |
R |
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∑ R(λ) |
| 400 nm |
19.80 |
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| 420 nm |
18.80 |
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| 440 nm |
17.80 |
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| 460 nm |
17.30 |
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| 480 nm |
17.50 |
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| 500 nm |
18.60 |
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| 520 nm |
19.80 |
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| 540 nm |
21.10 |
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| 560 nm |
22.70 |
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| 580 nm |
24.40 |
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| 600 nm |
25.90 |
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| 620 nm |
27.30 |
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| 640 nm |
28.60 |
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| 660 nm |
29.70 |
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| 680 nm |
30.30 |
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| 700 nm |
30.60 |
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Calculated Relative Intensity Colors of Bornite in Air
Relative
Intensity |
0% |
50% |
100% |
150% |
200% |
250% |
300% |
350% |
400% |
450% |
490% |
| R |
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Calculated Properties of Bornite
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| Electron Density: |
Bulk Density (Electron Density)=4.77 gm/cc
note: Specific Gravity of Bornite =5.09 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0042761281
Boson Index = 0.9957238719 |
| Photoelectric: |
PEBornite = 33.28 barns/electron
U=PEBornite x rElectron Density= 158.63 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Bornite is Not Radioactive |
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Bornite Classification
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| Dana Class: |
02.05.02.01 (02)Sulfides - Including Selenides and Tellurides |
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(02.05)where Am Bn Xp, with (m+n):p=3:2 |
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(02.05.02)Dana Group |
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02.05.02.01 Bornite Cu5FeS4 P bca 2/m 2/m 2/m |
| Strunz Class: |
02.BA.10 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.B - Metal Sulfides, M:S > 1:1 (mainly 2:1) |
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02.BA -With Cu, Ag, Au |
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02.BA.10 Bornite Cu5FeS4 P bca 2/m 2/m 2/m |
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Other Bornite Information
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| References: |
NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Bornite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - Franklin Minerals(Dunn)
7 - Franklin Minerals(Palache)
8 - GeoScienceWorld
9 - Google Images
10 - Google Scholar
11 - Handbook of Mineralogy (MinSocAm)
12 - Handbook of Mineralogy (UofA)
13 - HyperPhysics
14 - MinDAT
15 - Mineral and Gemstone Kingdom
16 - Mineralienatlas (Deutsch)
17 - Online Mineral Museum
18 - Philatelic Mineralogy
19 - QUT Mineral Atlas
20 - Ruff.Info
21 - Scandinavian mineral gallery
22 - WWW-MINCRYST
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Bornite
Cu5FeS4
Dana No: 02.05.02.01 Strunz No: 02.BA.10
Locality:
Notes:
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