Mineralogy Database

Bellidoite Mineral Data

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General Bellidoite Information

Help on Chemical  Formula: Chemical Formula: Cu2Se
Help on Composition: Composition: Molecular Weight = 206.05 gm
   Copper    61.68 %  Cu
   Selenium  38.32 %  Se
            100.00 % 
Help on Empirical Formula: Empirical Formula: Cu2Se
Help on Environment: Environment: Formed at moderate to low temperature with other hydrothermal selenides and sulfides.
Help on IMA Status: IMA Status: Approved IMA 1975
Help on Locality: Locality: From Habri, near Tisnova, Czechoslovakia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For Eleodoro Bellido Bravo, Director of Servicio de Geologia y Mineria, Peru.
Help on Name Pronunciation: Name Pronunciation: Bellidoite + Pronunciation Say BELLIDOITE
Help on Synonym: Synonym: ICSD 30230
  PDF 46-1129

Bellidoite Image

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Click Here for Larger   Image

  Bellidoite   Berzelianite

Comments: Dark bellidoite inclusions in black berzelianite with white calcite.
Location: Habri, near Tisnov, Jihomoravsky, Czech Republi. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Bellidoite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.01909
Help on Cell Dimensions: Cell Dimensions: a = 11.52, c = 11.74, Z = 32; V = 1,558.02 Den(Calc)= 7.03
Help on Crystal System: Crystal System: Tetragonal - Dipyramidal H-M Symbol (4/m) Space Group: P 41/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.06(1), 3.38(0.8), 1.763(0.7),

Physical Properties of Bellidoite

Help on Color: Color: Silver gray.
Help on Density: Density: 7.03
Help on Diaphaneity: Diaphaneity: Opaque
Help on Hardness: Hardness: 1.5-2 - Talc-Gypsum
Help on Luster: Luster: Metallic

Optical Properties of Bellidoite

Help on RL Anisotrophism: RL Anisotrophism: Very weak in gray colors.
Help on RL Color: RL Color: Creamy white.
Help on RL Pleochroism: RL Pleochroism: Very weak.

Calculated Properties of Bellidoite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=6.28 gm/cc
note: Specific Gravity of Bellidoite =7.03 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEBellidoite = 59.11 barns/electron
U=PEBellidoite x rElectron Density= 371.10 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Bellidoite is Not Radioactive

Bellidoite 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
  (02.04.09)Dana Group Bellidoite Cu2Se P 41/m 4/m
Help on  Strunz Class: Strunz Class: 02.BA.15b 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.15b Bellidoite Cu2Se P 41/m 4/m

Other Bellidoite Information

Help on References: References: NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Bellidoite :
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.15b





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