Babkinite Mineral Data

Babkinite Mineral Data
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General Babkinite Information

Help on Chemical Formula: Chemical Formula: Pb2Bi2(S,Se)3
Help on Composition: Composition: Molecular Weight = 975.45 gm
   Bismuth   42.85 %  Bi
   Lead      42.48 %  Pb
   Selenium   8.09 %  Se
   Sulfur     6.57 %  S
            ______ 
            100.00 % 
Help on Empirical Formula: Empirical Formula: Pb2Bi2S2Se
Help on Environment: Environment: High temperature Sn-W sulfide deposits.
Help on IMA Status: IMA Status: Approved IMA 1994 (Dana # Added)
Help on Locality: Locality: The Nevskoye deposit in northeastern Russia, 400 km northwest of Magadan, 25 km northwest of Omskukchan and 35 km southwest of the Dukat gold-silver deposit. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For P. V. Babkin (1929-1977), noted Russian Geologist and the first investigator of the Nevskoye deposit.
Help on Name Pronunciation: Name Pronunciation: Babkinite + Pronunciation Say BABKINITE
Help on Synonym: Synonym: IMA1994-030
 

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Babkinite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:9.44881
Help on Cell Dimensions: Cell Dimensions: a = 4.191, c = 39.6, Z = 3; V = 602.37 Den(Calc)= 8.07
Help on Crystal System: Crystal System: TrigonalSpace Group: P 3,P 3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.04(1), 2.096(0.8), 1.298(0.7),1.806(0.6), 1.233(0.6), 3.42(0.5),
 

Physical Properties of Babkinite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Silvery gray.
Help on Density: Density: 8.09
Help on Diaphaneity: Diaphaneity: Opaque
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Hardness: Hardness: 2 - Gypsum
Help on Luster: Luster: Metallic
Help on Streak: Streak: gray
 

Optical Properties of Babkinite

Help on Optical Data: Optical Data: NCalc= 2.08 - from Gladstone-Dale relationship (KC = 0.134) where Ncalc=Dcalc*KC+1
NCalc= 2.08 - from Gladstone-Dale relationship (KC = 0.134) where Ncalc=Dmeas*KC+1
Help on RL Anisotrophism: RL Anisotrophism: Distinct.
Help on RL Bireflectance: RL Bireflectance: Almost absent.
Help on RL Color: RL Color: Yellowish white.
Help on RL Pleochroism: RL Pleochroism: Weak, bluish brown tints.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Babkinite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 470 nm   49.70   48.50 
   
 546 nm   48.40   47.40 
 589 nm   47.90   46.80 
 650 nm   47.90   46.20 
Calculated Relative Intensity Colors of Babkinite in Air
Relative
Intensity		    0%   20%   40%   60%   80% 100% 120% 140% 160% 180% 190%
R1                      
R2                      
 

Calculated Properties of Babkinite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=6.55 gm/cc
note: Specific Gravity of Babkinite =8.07 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.1
Boson Index = 0.9
Help on Photoelectric: Photoelectric: PEBabkinite =1,659.87 barns/electron
U=PEBabkinite x rElectron Density=10875.96 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Babkinite is Not Radioactive
 

Babkinite Classification
Help on Dana Class: Dana Class: 02.06.02.08 (02)Sulfides - Including Selenides and Tellurides
  (02.06)where Am Bn Xp, with (m+n):p=4:3
  (02.06.02)Joseite Group (Trigonal: R-3m)
 
02.06.02.01 Joseite Bi4(S,Te)3 R 3m 3 2/m
 
02.06.02.02 Joseite-B Bi4(S,Te)3 R 3m 3 2/m
 
02.06.02.03 Ikunolite Bi4(S,Se)3 R 3m 3 2/m
 
02.06.02.04 Laitakarite Bi4(Se,S)3 R 3m 3 2/m
 
02.06.02.05 Pilsenite Bi4Te3 R 3m 3 2/m
 
02.06.02.06 Poubaite PbBi2Se2(Te,S)2 R 3m 3 2/m
 
02.06.02.07 Rucklidgeite (Bi,Pb)3Te4 R 3m 3 2/m
 
02.06.02.08 Babkinite! Pb2Bi2(S,Se)3 P 3,P 3m Trig
Help on Strunz Class: Strunz Class: 02.GC.40e 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.G - Sulfarsenites, sulfantimonites, sulfbismuthites
  02.GC -Poly-sulfarsenites
 
02.GC.40e Babkinite! Pb2Bi2(S,Se)3 P 3,P 3m Trig
 

Other Babkinite Information
Help on References: References: NAME( Am.Min.,Vol.81,p1513,1996) PHYS. PROP.(Am.Min.,Vol.81,p1513,1996) OPTIC PROP.(MinRec, v 28, p 219)
Help on See Also: See Also: Links to other databases for Babkinite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - Google Images
4 - Google Scholar
5 - Handbook of Mineralogy (MinSocAm)
6 - Handbook of Mineralogy (UofA)
7 - MinDAT
8 - MinMax(Deutsch)
9 - MinMax(English)
10 - Mineralienatlas (Deutsch)
11 - QUT Mineral Atlas
12 - Ruff.Info

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

Babkinite

Pb2Bi2(S,Se)3
Dana No: 02.06.02.08 Strunz No: 02.GC.40e
Locality:

 

Notes: