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Watanabeite Mineral Data
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General Watanabeite Information
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 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 |
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Watanabeite Image |
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Images:
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Watanabeite
Comments: Polished section image of grain aggregate of watanabeite (Wat) to demonstrate the outline of grains and anisotropy; A in plane polarised light (PPL), B with crossed polars (XPL). (MinMag, v57:389).
Location: Occurs with quartz in a hydrothermal vein at the Teine mine, Sapporo, Hokkaido, Japan.
Scale: Scale Bar 0.5 mm.
© Mineralogical Magazine |
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Watanabeite Crystallography
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| 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: |
Orthorhombic Space Group: Unk |
| X Ray Diffraction: |
By Intensity(I/Io): 2.999(1), 1.833(0.4), 1.594(0.2), |
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Physical Properties of Watanabeite
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| 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 |
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Calculated Properties of Watanabeite
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| Electron Density: |
Bulk Density (Electron Density)=4.18 gm/cc
note: Specific Gravity of Watanabeite =4.54 gm/cc.
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| 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.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Watanabeite is Not Radioactive |
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Watanabeite Classification
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| 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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03.05.15.01 Watanabeite Cu4(As,Sb)2S5 Unk Ortho |
| 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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02.GC.15 Watanabeite Cu4(As,Sb)2S5 Unk Ortho |
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Other Watanabeite Information
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| 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
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Print or Cut-and-Paste your Watanabeite Specimen Label here :
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Watanabeite
Cu4(As,Sb)2S5
Dana No: 03.05.15.01 Strunz No: 02.GC.15
Locality:
Notes:
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