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Cervelleite Mineral Data
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General Cervelleite Information
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 Chemical Formula: |
Ag4TeS |
| Composition: |
Molecular Weight = 591.14 gm |
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Silver 72.99 % Ag |
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Tellurium 21.59 % Te |
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Sulfur 5.42 % S |
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______ |
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100.00 % |
| Empirical Formula: |
Ag4TeS |
| Environment: |
Rimming acanthite. |
| IMA Status: |
Approved IMA 1989 |
| Locality: |
La Bambolla (Mina Moctezuma), mine Moctezuma, Sonora, Mexico. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Bernard Cervelle (1940-), French mineralogist. |
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Cervelleite Crystallography
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| Cell Dimensions: |
a = 14.03, Z = 24; V = 2,761.68 Den(Calc)= 8.53 |
| Crystal System: |
Isometric Space Group: Unk |
| X Ray Diffraction: |
By Intensity(I/Io): 5(1), 4.24(0.8), 6.29(0.6), |
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Physical Properties of Cervelleite
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| Cleavage: |
None |
| Color: |
Gray, Black. |
| Diaphaneity: |
Opaque |
| Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
| Hardness: |
1.5 - Between Talc and Gypsum |
| Luster: |
Metallic |
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Calculated Properties of Cervelleite
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| Electron Density: |
Bulk Density (Electron Density)=7.39 gm/cc
note: Specific Gravity of Cervelleite =8.53 gm/cc.
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| Fermion Index: |
Fermion Index = 0.01
Boson Index = 0.99 |
| Photoelectric: |
PECervelleite = 268.83 barns/electron
U=PECervelleite x rElectron Density=1,986.09 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Cervelleite is Not Radioactive |
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Cervelleite Classification
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| Dana Class: |
02.04.02.02 (02)Sulfides - Including Selenides and Tellurides |
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(02.04)where Am Bn Xp, with (m+n):p=2:1 |
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(02.04.02)Dana Group |
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02.04.02.01 Hessite Ag2Te P 21/c 2/m |
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02.04.02.02 Cervelleite Ag4TeS Unk Cubic |
| Strunz Class: |
02.BA.30d 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.B - Metal Sulfides, M:S > 1:1 (mainly 2:1) |
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02.BA -With Cu, Ag, Au |
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02.BA.30d Cervelleite Ag4TeS Unk Cubic |
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Other Cervelleite Information
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| References: |
NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.75,p1431,1990) |
| 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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Print or Cut-and-Paste your Cervelleite Specimen Label here :
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Cervelleite
Ag4TeS
Dana No: 02.04.02.02 Strunz No: 02.BA.30d
Locality:
Notes:
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