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Skinnerite Mineral Data
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General Skinnerite Information
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 Chemical Formula: |
Cu3SbS3 |
| Composition: |
Molecular Weight = 408.59 gm |
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Copper 46.66 % Cu |
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Antimony 29.80 % Sb |
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Sulfur 23.54 % S |
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______ |
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100.00 % |
| Empirical Formula: |
Cu3SbS3 |
| Environment: |
Found in a complex of analcime-natrolite veins cutting naujaites. |
| IMA Status: |
Approved IMA 1974 |
| Locality: |
Il�maussaq intrusive, Kvanefeld, southern Greenland. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Brian J. Skinnner, Yale University, New Haven, Connecticut, USA. |
| Name Pronunciation: |
Skinnerite + Pronunciation  |
| Synonym: |
ICSD 74901 |
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PDF 26-1110 |
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Skinnerite Image |
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Images:
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Skinnerite Crystallography
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| Axial Ratios: |
a:b:c =0.7619:1:1.2946 |
| Cell Dimensions: |
a = 7.81, b = 10.25, c = 13.27, Z = 8; beta = 90.35° V = 1,062.28 Den(Calc)= 5.11 |
| Crystal System: |
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/c |
| X Ray Diffraction: |
By Intensity(I/Io): 2.831(1), 3.048(0.7), 3.91(0.6), |
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Physical Properties of Skinnerite
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| Color: |
Silver gray. |
| Density: |
5.07 |
| Diaphaneity: |
Opaque |
| Habit: |
Irregular Grains - Occurs as splotchy, anhedral crystals forming inclusions in other minerals or rocks. |
| Hardness: |
3.5-4 - Copper Penny-Fluorite |
| Luster: |
Metallic |
| Streak: |
reddish black |
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Optical Properties of Skinnerite
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| RL Anisotrophism: |
Distinct in air, strong in oil, from pale purple to grayish yellow. |
| RL Color: |
Light bluish gray with deep red interanl reflections. |
| RL Pleochroism: |
Weak in air, weak to distinct in oil. |
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Calculated Properties of Skinnerite
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| Electron Density: |
Bulk Density (Electron Density)=4.65 gm/cc
note: Specific Gravity of Skinnerite =5.11 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0017658094
Boson Index = 0.9982341906 |
| Photoelectric: |
PESkinnerite = 119.12 barns/electron
U=PESkinnerite x rElectron Density= 554.19 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Skinnerite is Not Radioactive |
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Skinnerite Classification
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| Dana Class: |
03.04.08.02 (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 Skinnerite Information
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| References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Skinnerite :
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
15 - WWW-MINCRYST
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Print or Cut-and-Paste your Skinnerite Specimen Label here :
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Skinnerite
Cu3SbS3
Dana No: 03.04.08.02 Strunz No: 02.GA.20
Locality:
Notes:
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