Mineralogy Database

Bukovite Mineral Data

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General Bukovite Information

Help on Chemical  Formula: Chemical Formula: Tl2Cu3FeSe4
Help on Composition: Composition: Molecular Weight = 971.09 gm
   Thallium  42.09 %  Tl
   Iron       5.75 %  Fe
   Copper    19.63 %  Cu
   Selenium  32.52 %  Se
            ______ 
            100.00 % 
Help on Empirical Formula: Empirical Formula: Tl2Cu3Fe2+Se4
Help on Environment: Environment: In calcite veins of hydrothermal origin, in metamorphic rocks.
Help on IMA Status: IMA Status: Approved IMA 1971
Help on Locality: Locality: From Bukov, Petrovice, and Predborice, Czechoslovakia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For its occurrence at Bukov, Czechoslovakia.
Help on Name Pronunciation: Name Pronunciation: Bukovite Say BUKOVITE
Help on Synonym: Synonym: ICSD 40327
  PDF 33-497
 

Bukovite Image

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  Bukovite

Comments: Silvery metallic minute aggregates of bukovite in white calcite (polished mount).
Location: Predborice, Stredocesky, Czech Republic. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Bukovite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:3.45763
Help on Cell Dimensions: Cell Dimensions: a = 3.966, c = 13.713, Z = 1; V = 215.69 Den(Calc)= 7.48
Help on Crystal System: Crystal System: Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: I 4/mmm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.995(1), 3.43(0.7), 1.714(0.6),
 

Physical Properties of Bukovite

Help on Cleavage: Cleavage: {001} Good, {100} Distinct
Help on Color: Color: Gray brown, Black.
Help on Density: Density: 7.36
Help on Diaphaneity: Diaphaneity: Opaque
Help on Habit: Habit: Inclusions - Generally found as inclusions in other minerals.
Help on Hardness: Hardness: 2 - Gypsum
Help on Luster: Luster: Metallic
 

Optical Properties of Bukovite

Help on RL Pleochroism: RL Pleochroism: Weak, creamy gray to gray.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Bukovite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   20.00   28.10 
   
 420 nm   23.00   28.90 
 440 nm   26.00   29.70 
 460 nm   27.30   30.00 
 480 nm   27.90   30.20 
 500 nm   28.20   30.10 
 520 nm   28.00   29.80 
 540 nm   27.70   29.40 
 560 nm   27.20   28.80 
 580 nm   26.50   28.20 
 600 nm   25.70   27.60 
 620 nm   25.00   27.00 
 640 nm   24.20   26.40 
 660 nm   23.30   25.80 
 680 nm   22.50   25.20 
 700 nm   21.90   24.60 
Calculated Relative Intensity Colors of Bukovite in Air
Relative
Intensity
   0%   40%   80% 100% 120% 160% 200% 240% 280% 320% 360%
R1                      
R2                      
 

Calculated Properties of Bukovite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=6.33 gm/cc
note: Specific Gravity of Bukovite =7.48 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEBukovite = 770.08 barns/electron
U=PEBukovite x rElectron Density=4,875.83 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Bukovite is Not Radioactive
 

Bukovite Classification

Help on  Dana Class: Dana Class: 02.05.05.02 (02)Sulfides - Including Selenides and Tellurides
  (02.05)where Am Bn Xp, with (m+n):p=3:2
  (02.05.05)Thalcusite Group
 
02.05.05.01 Thalcusite TlCu3FeS4 I 4/mmm 4/m 2/m 2/m
 
02.05.05.02 Bukovite Tl2Cu3FeSe4 I 4/mmm 4/m 2/m 2/m
 
02.05.05.03 Murunskite K2Cu3FeS4 I 4/mmm 4/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 02.BD.30 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.B - Metal Sulfides, M:S > 1:1 (mainly 2:1)
  02.BD -With Hg, Tl
 
02.BD.30 Bukovite Tl2Cu3FeSe4 I 4/mmm 4/m 2/m 2/m
 
02.BD.30 Murunskite K2Cu3FeS4 I 4/mmm 4/m 2/m 2/m
 
02.BD.30 Thalcusite TlCu3FeS4 I 4/mmm 4/m 2/m 2/m
 

Other Bukovite 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 Bukovite :
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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Bukovite

Tl2Cu3FeSe4
Dana No: 02.05.05.02 Strunz No: 02.BD.30
Locality:

 

Notes:

 

 
   
 


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