Polkovicite Mineral Data + Say POLKOVICITE


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General Polkovicite Information

Help on Chemical  Formula: Chemical Formula: (Fe,Pb)3(Ge,Fe)1-xS4
Help on Composition: Composition: Molecular Weight = 470.48 gm
   Iron       29.68 %  Fe
   Germanium  10.03 %  Ge
   Lead       33.03 %  Pb
   Sulfur     27.26 %  S
             ______ 
             100.00 % 
Help on Empirical Formula: Empirical Formula: Fe2+2.25Pb0.75Ge0.65Fe2+0.25S4
Help on IMA Status: IMA Status: Approved IMA 1979
Help on Locality: Locality: Link to MinDat.org Location Data.
 

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Polkovicite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 10.61, Z = 8; V = 1,194.39 Den(Calc)= 5.23
Help on Crystal System: Crystal System: Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F d3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.08(1), 2.15(0.9), 2.8(0.6),
 

Physical Properties of Polkovicite

Help on Cleavage: Cleavage: None
Help on Color: Color: Brownish gray.
Help on Density: Density: 6.62
Help on Diaphaniety: Diaphaniety: Opaque
Help on Hardness: Hardness: 3.5 - Copper Penny
Help on Luster: Luster: Metallic
Help on Streak: Streak: dark gray
 

Calculated Properties of Polkovicite

Help on Electron Density: Electron Density:

relectron=4.70 gm/cc
note: rPolkovicite =5.23 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.08915
Boson Index = 0.91085
Help on Photoelectric: Photoelectric:

PEPolkovicite = 582.11 barns/electron
U=PEPolkovicite x relectron=2,734.62 barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Polkovicite is Not Radioactive

 

Polkovicite Classification

Help on  Dana Class: Dana Class: 2.9.5.2 (2)Sulfides - Including Selenides and Tellurides
  (2.9)where Am Bn Xp, with (m+n):p=1:1
  (2.9.5)Dana Group
 
2.9.5.1 Morozeviczite (Pb,Fe)3Ge1-xS4 F d3m 4/m 3 2/m
 
2.9.5.2 Polkovicite (Fe,Pb)3(Ge,Fe)1-xS4 F d3m 4/m 3 2/m
Help on  Strunz Class: Strunz Class: II/C.10-70 II - Sulfides and sulphosalts
  II/C - Sulfides with metal: sulfur, selenium and tellurium = 1:1
  II/C.10 - Stannite group, Germanite series
 
II/C.10-10 Renierite (Cu,Zn)11(Ge,As)2Fe4S16 P 42c- 4 2m
 
II/C.10-15 Vinciennite Cu10Fe4Sn(As,Sb)S16 P 4122 4 2 2
 
II/C.10-20 Germanite Cu26Fe4Ge4S32 P 43n 4 3m
 
II/C.10-30 Nekrasovite Cu26V2(Sn,As,Sb)6S32 P 43n 4 3m
 
II/C.10-40 Colusite Cu12-13V(As,Sb,Sn,Ge)3S16 P 43n 4 3m
 
II/C.10-45 Stibiocolusite Cu13V(Sb,As,Sn)3S16 P 43n 4 3m
 
II/C.10-47 Germanocolusite Cu13V(Ge,As)3S16 P 43n 4 3m
 
II/C.10-50 Arsenosulvanite Cu3(As,V)S4 P 43m 4 3m
 
II/C.10-50* Maikainite! Cu20(Fe,Cu)6Mo2Ge6S32 P 43n 4 3m
 
II/C.10-55 Ovamboite! Cu20(Fe,Cu,Zn)6W2Ge6S32 P 43n 4 3m
 
II/C.10-60 Sulvanite Cu3VS4 P 43m 4 3m
 
II/C.10-70 Polkovicite (Fe,Pb)3(Ge,Fe)1-xS4 F d3m 4/m 3 2/m
 
II/C.10-80 Morozeviczite (Pb,Fe)3Ge1-xS4 F d3m 4/m 3 2/m
 

Other Polkovicite Information

Help on References: References: PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Polkovicite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas 11 -École des Mines de Paris

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Polkovicite

(Fe,Pb)3(Ge,Fe)1-xS4
Dana No: 2.9.5.2 Strunz No: II/C.10-70
Locality:

 

Notes:

 

 
   
 
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