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Wittichenite Mineral Data
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General Wittichenite Information
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 Chemical Formula: |
Cu3BiS3 |
| Composition: |
Molecular Weight = 495.82 gm |
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Copper 38.45 % Cu |
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Bismuth 42.15 % Bi |
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Sulfur 19.40 % S |
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______ |
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100.00 % |
| Empirical Formula: |
Cu3BiS3 |
| Environment: |
In hydrothermal veins with other Bi minerals. |
| IMA Status: |
Valid Species (Pre-IMA) 1853 |
| Locality: |
Wittichen, Baden, Germany. Link to MinDat.org Location Data. |
| Name Origin: |
Named after its locality. |
| Name Pronunciation: |
Wittichenite + Pronunciation  |
| Synonym: |
ICSD 14305 |
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Klaprothite - mixture with emplectite |
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PDF 43-1479 |
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Wittichenite Image |
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Images:
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Wittichenite Crystallography
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| Axial Ratios: |
a:b:c =0.7429:1:0.6488 |
| Cell Dimensions: |
a = 7.66, b = 10.31, c = 6.69, Z = 4; V = 528.34 Den(Calc)= 6.23 |
| Crystal System: |
Orthorhombic - Disphenoidal H-M Symbol (2 2 2) Space Group: P 212121 |
| X Ray Diffraction: |
By Intensity(I/Io): 2.85(1), 3.08(0.8), 4.55(0.4), |
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Physical Properties of Wittichenite
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| Cleavage: |
None |
| Color: |
Lead gray, Bronze, Steel gray, Tin white. |
| Density: |
6.3 - 6.7, Average = 6.5 |
| Diaphaneity: |
Opaque |
| Fracture: |
Brittle - Generally displayed by glasses and most non-metallic minerals. |
| Habit: |
Columnar - Forms columns |
| Habit: |
Massive - Granular - Common texture observed in granite and other igneous rock. |
| Habit: |
Nodular - Tuberose forms having irregular protuberances over the surface. |
| Hardness: |
2.5 - Finger Nail |
| Luster: |
Metallic |
| Streak: |
black |
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Optical Properties of Wittichenite
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| RL Anisotrophism: |
Weak, shades of dark brown. |
| RL Color: |
White, creamy to grayish. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Wittichenite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
35.00 |
36.90 |
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| 420 nm |
34.10 |
35.80 |
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| 440 nm |
33.20 |
34.70 |
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| 460 nm |
32.70 |
34.00 |
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| 480 nm |
32.60 |
34.10 |
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| 500 nm |
32.90 |
34.70 |
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| 520 nm |
33.20 |
35.00 |
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| 540 nm |
33.50 |
35.20 |
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| 560 nm |
33.60 |
35.30 |
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| 580 nm |
33.50 |
35.30 |
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| 600 nm |
33.20 |
35.20 |
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| 620 nm |
33.00 |
35.20 |
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| 640 nm |
32.80 |
35.20 |
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| 660 nm |
32.40 |
35.00 |
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| 680 nm |
31.70 |
34.60 |
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| 700 nm |
30.80 |
34.00 |
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Calculated Relative Intensity Colors of Wittichenite in Air
Relative
Intensity |
0% |
30% |
60% |
90% |
100% |
120% |
150% |
180% |
210% |
240% |
270% |
| R1 |
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| R2 |
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Calculated Properties of Wittichenite
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| Electron Density: |
Bulk Density (Electron Density)=5.48 gm/cc
note: Specific Gravity of Wittichenite =6.23 gm/cc.
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| Fermion Index: |
Fermion Index = 0.001455567
Boson Index = 0.998544433 |
| Photoelectric: |
PEWittichenite = 790.87 barns/electron
U=PEWittichenite x rElectron Density=4,332.73 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Wittichenite is Not Radioactive |
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Wittichenite Classification
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| Dana Class: |
03.04.08.01 (03)Sulfides - Sulfosalts |
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(03.04)where z/y > 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals |
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(03.04.08)Dana Group |
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03.04.08.01 Wittichenite Cu3BiS3 P 212121 2 2 2 |
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03.04.08.02 Skinnerite Cu3SbS3 P 21/c 2/m |
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03.04.08.03 Moeloite! Pb6Sb6S14(S3) P 21221 2 2 2 |
| Strunz Class: |
02.GA.20 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.G - Sulfarsenites, sulfantimonites, sulfbismuthites |
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02.GA -Neso-sulfarsenites, etc., without additional S |
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02.GA.20 Skinnerite Cu3SbS3 P 21/c 2/m |
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02.GA.20 Wittichenite Cu3BiS3 P 212121 2 2 2 |
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Other Wittichenite 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 Wittichenite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
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Print or Cut-and-Paste your Wittichenite Specimen Label here :
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Wittichenite
Cu3BiS3
Dana No: 03.04.08.01 Strunz No: 02.GA.20
Locality:
Notes:
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