Mineralogy Database

Cervelleite Mineral Data

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General Cervelleite Information

Help on Chemical  Formula: Chemical Formula: Ag4TeS
Help on Composition: Composition: Molecular Weight = 591.14 gm
   Silver     72.99 %  Ag
   Tellurium  21.59 %  Te
   Sulfur      5.42 %  S
             100.00 % 
Help on Empirical Formula: Empirical Formula: Ag4TeS
Help on Environment: Environment: Rimming acanthite.
Help on IMA Status: IMA Status: Approved IMA 1989
Help on Locality: Locality: La Bambolla (Mina Moctezuma), mine Moctezuma, Sonora, Mexico. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Bernard Cervelle (1940-), French mineralogist.

Cervelleite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 14.03, Z = 24; V = 2,761.68 Den(Calc)= 8.53
Help on Crystal System: Crystal System: Isometric Space Group: Unk
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5(1), 4.24(0.8), 6.29(0.6),

Physical Properties of Cervelleite

Help on Cleavage: Cleavage: None
Help on Color: Color: Gray, Black.
Help on Diaphaneity: Diaphaneity: Opaque
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Hardness: Hardness: 1.5 - Between Talc and Gypsum
Help on Luster: Luster: Metallic

Calculated Properties of Cervelleite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=7.39 gm/cc
note: Specific Gravity of Cervelleite =8.53 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PECervelleite = 268.83 barns/electron
U=PECervelleite x rElectron Density=1,986.09 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Cervelleite is Not Radioactive

Cervelleite Classification

Help on  Dana Class: Dana Class: (02)Sulfides - Including Selenides and Tellurides
  (02.04)where Am Bn Xp, with (m+n):p=2:1
  (02.04.02)Dana Group Hessite Ag2Te P 21/c 2/m Cervelleite Ag4TeS Unk Cubic
Help on  Strunz Class: Strunz Class: 02.BA.30d 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.B - Metal Sulfides, M:S > 1:1 (mainly 2:1)
  02.BA -With Cu, Ag, Au
02.BA.30d Cervelleite Ag4TeS Unk Cubic

Other Cervelleite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.75,p1431,1990)
Help on See Also: See Also: Links to other databases for Cervelleite :
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.BA.30d





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