Chalcopyrite Mineral Data (original) (raw)
General Chalcopyrite Information
Chemical Formula:
CuFeS2
Composition:
Molecular Weight = 183.53 gm
Iron 30.43 % Fe
Copper 34.63 % Cu
Sulfur 34.94 % S
______
100.00 %
Empirical Formula:
CuFe2+S2
Environment:
Common in sulfide veins and disseminated in igneous rocks.
IMA Status:
Valid Species (Pre-IMA) 1747
Locality:
Numerous localities world wide. The most economically important mineral in porphyry copper deposits. Link to MinDat.org Location Data.
Name Origin:
From the Greek, chalkos, "copper" hence "Copper Pyrite."
Name Pronunciation:
Chalcopyrite + Pronunciation 
Synonym:
ICSD 2518
PDF 35-752
Chalcopyrite Image
Images:
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Chalcopyrite Quartz Comments: Well-formed crystals of chalcopyrite and quartz. Location: Boldut mine, 61 level (350 meters deep), Cavnic, Maramures, Rumania.Scale: 5.5 x 3.5 cm. © Fabre Minerals |
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Images:
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Chalcopyrite Moncheite Comments: White moncheite with chalcopyrite (orange, blue and violet tarnishing colors) in silicate matrix. Polished section (from microprobe analysis) in reflected light. Location: Lukkulaisvaara ultrabasic Massif, Olanga (Oulanka) River, Oulanka plutonic complex, Karelia Republic, Northern Region, Russia.Scale: Picture size 0.11 mm. © Thomas Witzke / Abraxas-Verlag |
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Images:
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Chalcopyrite Oulankaite Telargpalite Tulameenite Comments: Gray long-prismatic crystal of oulankaite with light grayish telargpalite and pale yellowish-white rims of tulameenite in massive yellowish chalcopyrite. Polished section (from microprobe analysis) in reflected light. Location: Lukkulaisvaara ultrabasic Massif, Olanga (Oulanka) River, Oulanka plutonic complex, Karelia Republic, Northern Region, Russia.Scale: Picture size 0.12 mm. © Thomas Witzke / Abraxas-Verlag |
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Chalcopyrite Crystallography
Axial Ratios:
a:c = 1:1.97159
Cell Dimensions:
a = 5.28, c = 10.41, Z = 4; V = 290.21 Den(Calc)= 4.20
Crystal System:
Tetragonal - ScalenohedralH-M Symbol (4 2m) Space Group: I 42d
X Ray Diffraction:
By Intensity(I/Io): 3.03(1), 1.854(0.8), 1.591(0.6),
Forms:
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| | Forms:( 1 1 1) ( 1 1 1) Warning: this large pop-up is very compute intensive and may not work well with some computers. | | -------------------------------------------------------------------------------------------------------------------------------------- |
Crystal Structure:
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| | Hall S R , Stewart J M , Acta Crystallographica, Section B , 29 (1973) p.579-585, The crystal structure refinement of chalcopyrite, CuFeS2 | | --------------------------------------------------------------------------------------------------------------------------------------------- |
Physical Properties of Chalcopyrite
Cleavage:
{112} Indistinct
Color:
Brass yellow, Honey yellow.
Density:
4.1 - 4.3, Average = 4.19
Diaphaneity:
Opaque
Fracture:
Brittle - Generally displayed by glasses and most non-metallic minerals.
Habit:
Druse - Crystal growth in a cavity which results in numerous crystal tipped surfaces.
Habit:
Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Habit:
Striated - Parallel lines on crystal surface or cleavage face.
Hardness:
3.5 - Copper Penny
Luminescence:
Non-fluorescent.
Luster:
Metallic
Magnetism:
Magnetic after heating
Streak:
greenish black
Optical Properties of Chalcopyrite
RL Anisotrophism:
Weak.
Reflectivity
Standardized Intensity (100%) Reflection Spectra of Chalcopyrite in Air
| λ | R1 | R 2 |  |
∑ R1(λ) | ∑ R2(λ) |
|---|---|---|---|---|---|
| 400 nm | 12.60 | 14.80 |  |
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| 420 nm | 16.30 | 18.00 |  |
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| 440 nm | 20.00 | 21.20 |  |
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| 460 nm | 23.60 | 25.00 |  |
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| 480 nm | 27.00 | 28.60 |  |
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| 500 nm | 30.20 | 31.70 |  |
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| 520 nm | 33.00 | 34.30 |  |
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| 540 nm | 35.10 | 36.40 |  |
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| 560 nm | 36.80 | 38.00 |  |
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| 580 nm | 38.20 | 39.30 |  |
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| 600 nm | 39.30 | 40.40 |  |
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| 620 nm | 40.10 | 41.00 |  |
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| 640 nm | 40.70 | 41.60 |  |
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| 660 nm | 41.10 | 41.90 |  |
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| 680 nm | 41.40 | 42.00 |  |
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| 700 nm | 41.40 | 41.80 |  |
Calculated Relative Intensity Colors of Chalcopyrite in Air
| RelativeIntensity | 0% | 50% | 100% | 150% | 200% | 250% | 300% | 350% | 400% | 420% |
|---|---|---|---|---|---|---|---|---|---|---|
| R1 | ||||||||||
| R2 |
Calculated Properties of Chalcopyrite
Electron Density:
Bulk Density (Electron Density)=3.98 gm/cc
note: Specific Gravity of Chalcopyrite =4.20 gm/cc.
Fermion Index:
Fermion Index = 0.0090720414
Boson Index = 0.9909279586
Photoelectric:
PEChalcopyrite = 26.59 barns/electron
U=PEChalcopyrite x rElectron Density= 105.88 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Chalcopyrite is Not Radioactive
Chalcopyrite Classification
Dana Class:
02.09.01.01 (02)Sulfides - Including Selenides and Tellurides
(02.09)where Am Bn Xp, with (m+n):p=1:1
(02.09.01)Chalcopyrite Group (Tetragonal: I-42d)
02.09.01.01 Chalcopyrite CuFeS2 I 42d 4 2m
02.09.01.02 Eskebornite CuFeSe2 I 42d 4 2m
02.09.01.03 Gallite CuGaS2 I 42d 4 2m
02.09.01.04 Roquesite CuInS2 I 42d 4 2m
02.09.01.05 Lenaite AgFeS2 P 42mc 4mm
02.09.01.06 Laforetite! AgInS2 I 42d 4 2m
Strunz Class:
02.CB.10a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
02.C - Metal Sulfides, M:S = 1:1 (and similar)
02.CB -With Zn, Fe, Cu, Ag, Au, etc
02.CB.10a Chalcopyrite CuFeS2 I 42d 4 2m
02.CB.10a Eskebornite CuFeSe2 I 42d 4 2m
02.CB.10a Gallite CuGaS2 I 42d 4 2m
02.CB.10a Laforetite! AgInS2 I 42d 4 2m
02.CB.10a Lenaite AgFeS2 P 42mc 4mm
02.CB.10a Roquesite CuInS2 I 42d 4 2m
Other Chalcopyrite Information
References:
NAME( Sinkankas66) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
See Also:
Links to other databases for Chalcopyrite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Amethyst Galleries' Mineral Gallery
5 - Athena
6 - EUROmin Project
7 - Ecole des Mines de Paris
8 - Franklin Minerals(Dunn)
9 - Franklin Minerals(Palache)
10 - GeoScienceWorld
11 - Glendale Community College
12 - Google Images
13 - Google Scholar
14 - Handbook of Mineralogy (MinSocAm)
15 - Handbook of Mineralogy (UofA)
16 - HyperPhysics
17 - MinDAT
18 - Mineral and Gemstone Kingdom
19 - Mineralienatlas (Deutsch)
20 - Online Mineral Museum
21 - Philatelic Mineralogy
22 - QUT Mineral Atlas
23 - Ruff.Info
24 - Scandinavian mineral gallery
25 - WWW-MINCRYST
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Print or Cut-and-Paste your Chalcopyrite Specimen Label here :
Chalcopyrite
CuFeS2
Dana No: 02.09.01.01 Strunz No: 02.CB.10a
Locality:
Notes: