General Watanabeite Information Chemical Formula: |
Cu4(As,Sb)2S5 |
Composition: |
Molecular Weight = 592.45 gm |
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Copper 42.90 % Cu |
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Antimony 12.33 % Sb |
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Arsenic 17.70 % As |
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Sulfur 27.06 % S |
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______ |
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100.00 % |
Empirical Formula: |
Cu4As1.4Sb0.6S5 |
Environment: |
Hydrothermal veins. |
IMA Status: |
Approved IMA 1993 |
Locality: |
Teine mine, Sapporo, Hokkaido, Japan. Link to MinDat.org Location Data. |
Name Origin: |
Named for Takeo Watanabe, (1907-1986), Japanese mineralogist. |
Name Pronunciation: |
Watanabeite + Pronunciation |
Synonym: |
IMA1991-025 |
| | Watanabeite Image
Images:
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Watanabeite Crystallography Axial Ratios: |
a:b:c =1.0909:1:1.3503 |
Cell Dimensions: |
a = 14.51, b = 13.3, c = 17.96, Z = 16; V = 3,465.97 Den(Calc)= 4.54 |
Crystal System: |
OrthorhombicSpace Group: Unk |
X Ray Diffraction: |
By Intensity(I/Io): 2.999(1), 1.833(0.4), 1.594(0.2), |
| Physical Properties of Watanabeite Cleavage: |
None |
Color: |
Lead gray, Silver gray. |
Density: |
4.66 |
Diaphaneity: |
Opaque |
Habit: |
Anhedral Grains - Granular minerals without the expression of crystal shapes |
Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
Hardness: |
4-4.5 - Between Fluorite and Apatite |
Luster: |
Metallic |
Streak: |
lead gray |
| Calculated Properties of Watanabeite Electron Density: |
Bulk Density (Electron Density)=4.18 gm/cc |
note: Specific Gravity of Watanabeite =4.54 gm/cc. Fermion Index: |
Fermion Index = 0.0020296504 |
Boson Index = 0.9979703496 Photoelectric: |
PEWatanabeite = 72.90 barns/electron |
U=PEWatanabeite x rElectron Density= 304.78 barns/cc. Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Watanabeite is Not Radioactive | Watanabeite Classification Dana Class: |
03.05.15.01 (03)Sulfides - Sulfosalts |
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(03.05)where 2.5 < z/y < 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals |
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(03.05.15)Dana Group |
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Strunz Class: |
02.GC.15 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.GC -Poly-sulfarsenites |
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| Other Watanabeite Information References: |
NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.79,p1014,1994) |
See Also: |
Links to other databases for Watanabeite : |
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 Search for Watanabeite using: Visit our Advertisers for Watanabeite : A Bijoux Google Search for WatanabeiteAdam's Minerals Google Search for Watanabeite Cape Minerals Google Search for Watanabeite Dakota Matrix Minerals Google Search for Watanabeite Excalibur Mineral Corp. Google Search for Watanabeite Exceptional Minerals Google Search for Watanabeite John Betts Fine Minerals Search for Watanabeite McDougall Minerals Google Search for Watanabeite Mineral News Website Link Rock and Mineral Shows Google Search for Watanabeite Weinrich Minerals, Inc. Google Search for Watanabeite Ask about Watanabeite here : Print or Cut-and-Paste your Watanabeite Specimen Label here :
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