Mineralogy Database

Watanabeite Mineral Data

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General Watanabeite Information

Help on Chemical  Formula: Chemical Formula: Cu4(As,Sb)2S5
Help on Composition: Composition: Molecular Weight = 592.45 gm
   Copper    42.90 %  Cu
   Antimony  12.33 %  Sb
   Arsenic   17.70 %  As
   Sulfur    27.06 %  S
            100.00 % 
Help on Empirical Formula: Empirical Formula: Cu4As1.4Sb0.6S5
Help on Environment: Environment: Hydrothermal veins.
Help on IMA Status: IMA Status: Approved IMA 1993
Help on Locality: Locality: Teine mine, Sapporo, Hokkaido, Japan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Takeo Watanabe, (1907-1986), Japanese mineralogist.
Help on Name Pronunciation: Name Pronunciation: Watanabeite + Pronunciation Say WATANABEITE
Help on Synonym: Synonym: IMA1991-025

Watanabeite Image

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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

Watanabeite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.0909:1:1.3503
Help on Cell Dimensions: Cell Dimensions: a = 14.51, b = 13.3, c = 17.96, Z = 16; V = 3,465.97 Den(Calc)= 4.54
Help on Crystal System: Crystal System: Orthorhombic Space Group: Unk
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.999(1), 1.833(0.4), 1.594(0.2),

Physical Properties of Watanabeite

Help on Cleavage: Cleavage: None
Help on Color: Color: Lead gray, Silver gray.
Help on Density: Density: 4.66
Help on Diaphaneity: Diaphaneity: Opaque
Help on Habit: Habit: Anhedral Grains - Granular minerals without the expression of crystal shapes
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Hardness: Hardness: 4-4.5 - Between Fluorite and Apatite
Help on Luster: Luster: Metallic
Help on Streak: Streak: lead gray

Calculated Properties of Watanabeite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.18 gm/cc
note: Specific Gravity of Watanabeite =4.54 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0020296504
Boson Index = 0.9979703496
Help on Photoelectric: Photoelectric: PEWatanabeite = 72.90 barns/electron
U=PEWatanabeite x rElectron Density= 304.78 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Watanabeite is Not Radioactive

Watanabeite Classification

Help on  Dana Class: Dana Class: (03)Sulfides - Sulfosalts
  (03.05)where 2.5 < z/y < 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
  (03.05.15)Dana Group Watanabeite Cu4(As,Sb)2S5 Unk Ortho
Help on  Strunz Class: Strunz Class: 02.GC.15 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.G - Sulfarsenites, sulfantimonites, sulfbismuthites
  02.GC -Poly-sulfarsenites
02.GC.15 Watanabeite Cu4(As,Sb)2S5 Unk Ortho

Other Watanabeite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.79,p1014,1994)
Help on See Also: 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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Dana No: Strunz No: 02.GC.15





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