Volynskite Mineral Data + Say VOLYNSKITE


General Volynskite Information
Help on Chemical Formula: Chemical Formula: AgBiTe2
Help on Composition: Composition: Molecular Weight = 572.05 gm
   Silver     18.86 %  Ag
   Bismuth    36.53 %  Bi
   Tellurium  44.61 %  Te
             ______ 
             100.00 % 
Help on Empirical Formula: Empirical Formula: AgBiTe2
Help on Environment: Environment: As complex intergrowths with other tellurides in gold ores.
Help on IMA Status: IMA Status: Approved IMA 1965
Help on Locality: Locality: Armenia, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for I. S. Volynskii (1900-1947), Polish economic geologist.
Help on Synonym: Synonym: ICSD 43266
  PDF 18-1173
 

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Volynskite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:4.64525
Help on Cell Dimensions: Cell Dimensions: a = 4.468, c = 20.755, Z = 3; V = 358.82 Den(Calc)= 7.94
Help on Crystal System: Crystal System: Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: P 3m1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.09(1), 2.21(0.5), 2.33(0.3),
Click Here for Large Volynskite Structure Window Crystal Structure:

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Bayliss P , American Mineralogist , 76 (1991) p.257-265, Crystal chemistry and crystallography of some minerals in the tetradymite group

 

Physical Properties of Volynskite

Help on Cleavage: Cleavage: [???] Perfect, [???] Imperfect, [???] Imperfect
Help on Color: Color: Lead gray.
Help on Density: Density: 8.01
Help on Diaphaniety: Diaphaniety: Opaque
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Hardness: Hardness: 2.5-3 - Finger Nail-Calcite
Help on Luster: Luster: Metallic
 

Optical Properties of Volynskite

Help on RL Anisotrophism: RL Anisotrophism: Very weak, pale pink to gray.
Help on RL Color: RL Color: Pale purplish.
Help on RL Pleochroism: RL Pleochroism: Very slight in oil.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Volynskite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   56.40   58.10 
   
 420 nm   56.00   57.70 
 440 nm   55.60   57.30 
 460 nm   55.20   56.90 
 480 nm   54.60   56.30 
 500 nm   53.80   55.50 
 520 nm   53.20   54.90 
 540 nm   53.00   54.60 
 560 nm   53.40   54.70 
 580 nm   54.00   54.90 
 600 nm   54.60   55.10 
 620 nm   55.00   55.50 
 640 nm   55.30   55.60 
 660 nm   55.30   55.80 
 680 nm   55.30   55.80 
 700 nm   55.40   55.80 
Calculated Relative Intensity Colors of Volynskite in Air
Relative
Intensity		    0%   20%   40%   60%   80% 100% 120% 140% 160% 170%
R1                    
R2                    
 

Calculated Properties of Volynskite

Help on Electron Density: Electron Density:

relectron=6.50 gm/cc
note: rVolynskite =7.94 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.03564
Boson Index = 0.96436
Help on Photoelectric: Photoelectric:

PEVolynskite = 938.37 barns/electron
U=PEVolynskite x relectron=6,095.48 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Volynskite is Not Radioactive
 

Volynskite Classification
Help on Dana Class: Dana Class: 3.7.1.3 (3)Sulfides - Sulfosalts
  (3.7)where z/y = 2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
  (3.7.1)Dana Group
 
3.7.1.1 Matildite AgBiS2 P 3m1 3 2/m
 
3.7.1.2 Bohdanowiczite AgBiSe2 P 3m1 3 2/m
 
3.7.1.3 Volynskite AgBiTe2 P 3m1 3 2/m
 
3.7.1.4 Zlatogorite! CuNiSb2 P 3m1 3 2/m
Help on Strunz Class: Strunz Class: II/C.16-50 II - Sulfides and sulphosalts
  II/C - Sulfides with metal: sulfur, selenium and tellurium = 1:1
  II/C.16 - Miargyrite - Volynskite series
 
II/C.16-05 Cuboargyrite! AgSbS F m3m 4/m 3 2/m
 
II/C.16-10 Miargyrite AgSbS2 C 2/c 2/m
 
II/C.16-15 Baumstarkite! Ag3(Sb,As)2SbS6 P1 1
 
II/C.16-20 Aramayoite Ag3Sb2(Sb,Bi)S6 P1 1
 
II/C.16-30 Matildite AgBiS2 P 3m1 3 2/m
 
II/C.16-35 Schapbachite! AgBiS2 F m3m 4/m 3 2/m
 
II/C.16-40 Bohdanowiczite AgBiSe2 P 3m1 3 2/m
 
II/C.16-50 Volynskite AgBiTe2 P 3m1 3 2/m
 

Other Volynskite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Volynskite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris

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Volynskite

AgBiTe2
Dana No: 3.7.1.3 Strunz No: II/C.16-50
Locality:

 

Notes:

 
 
   
 
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