Berzelianite Mineral Data

Berzelianite Mineral Data
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General Berzelianite 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: With other selenides in hydrotherma veinlets in dolomite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1850
Help on Locality: Locality: Skrikerum, Kalmar, Sweden. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after Jons Jacob Berzelius (1779-1848), Swedish chemist who discovered the element selenium.
Help on Name Pronunciation: Name Pronunciation: Berzelianite + Pronunciation Say BERZELIANITE
Help on Synonym: Synonym: ICSD 238
  PDF 6-680
 

Berzelianite Image

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Berzelianite   Athabascaite   Umangite

Comments: Reflected light photomicrograph of umangite (pinkish), berzelianite (gray), athabascaite (small white areas in berzelianite), calcite (olive).
Location: Sierra de Umango, La Rioja, Argentin. Scale: Not Given.
© Jeff Weissman / Photographic Guide to Mineral Species
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Berzelianite   Bellidoite

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
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Berzelianite

Comments: Blue-black metallic massive berzelianite.
Location: Bukov, Western Moravia, Severocesky, Czech Republic. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species
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Berzelianite   Novakite

Comments: Gray metallic dendritic novakite in white calcite with tarnished black berzelianite.
Location: Cerny Dul, Bohemia, Vychodocesky, Czech Republic. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species
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Berzelianite   Umangite

Comments: Black massive umangite intergrown with dark blue metallic berzelianite.
Location: Borsov, Bohemia, Vychodocesky, Czech Republic. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Berzelianite Crystallography
Help on Cell Dimensions: Cell Dimensions: a = 5.739, Z = 4; V = 189.02 Den(Calc)= 7.24
Help on Crystal System: Crystal System: Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F m3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.02(1), 3.32(0.9), 1.726(0.8),
Click Here for Large Berzelianite Structure Window Crystal Structure:

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Borchert W , Zeitschrift fur Kristallographie , 106 (1945) p.5-24, Gitterumwandlungen im system Cu2-x Se

View Additional jPOWD Structure files for Berzelianite
[1] [2] [3] [4]
 

Physical Properties of Berzelianite

Help on Cleavage: Cleavage: None
Help on Color: Color: Bluish gray, Gray, Black.
Help on Density: Density: 6.7
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Dendritic - Branching "tree-like" growths of great complexity (e.g. pyrolusite).
Help on Habit: Habit: Disseminated - Occurs in small, distinct particles dispersed in matrix.
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Hardness: Hardness: 2 - Gypsum
Help on Luster: Luster: Metallic
Help on Streak: Streak: shining
 

Optical Properties of Berzelianite

Help on RL Anisotrophism: RL Anisotrophism: Isotropic, sometimes anisotropic.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Berzelianite in Air
λ R  ∑ R(λ) 
 400 nm   25.80   
 420 nm   27.20 
 440 nm   28.60 
 460 nm   29.40 
 480 nm   29.40 
 500 nm   28.60 
 520 nm   27.80 
 540 nm   25.80 
 560 nm   24.30 
 580 nm   22.70 
 600 nm   21.20 
 620 nm   20.00 
 640 nm   19.00 
 660 nm   18.00 
 680 nm   17.00 
 700 nm   16.20 
Calculated Relative Intensity Colors of Berzelianite in Air
Relative
Intensity		    0%   50% 100% 150% 200% 250% 300% 350% 400% 420%
R                    
 

Calculated Properties of Berzelianite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=6.47 gm/cc
note: Specific Gravity of Berzelianite =7.24 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEBerzelianite = 59.11 barns/electron
U=PEBerzelianite x rElectron Density= 382.19 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Berzelianite is Not Radioactive
 

Berzelianite Classification
Help on Dana Class: Dana Class: 02.04.10.01 (02)Sulfides - Including Selenides and Tellurides
  (02.04)where Am Bn Xp, with (m+n):p=2:1
  (02.04.10)Dana Group
 
02.04.10.01 Berzelianite Cu2Se F m3m 4/m 3 2/m
Help on Strunz Class: Strunz Class: 02.BA.15a 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.15a Berzelianite Cu2Se F m3m 4/m 3 2/m
 

Other Berzelianite 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 Berzelianite :
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
15 - Scandinavian mineral gallery
16 - WWW-MINCRYST

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Print or Cut-and-Paste your Berzelianite Specimen Label here :

Berzelianite

Cu2Se
Dana No: 02.04.10.01 Strunz No: 02.BA.15a
Locality:

 

Notes: