Polkovicite Mineral Data

General Polkovicite Information

Chemical Formula:

(Fe,Pb)3(Ge,Fe)1-xS4

Composition:

Molecular Weight = 470.48 gm

Iron 29.68 % Fe

Germanium 10.03 % Ge

Lead 33.03 % Pb

Sulfur 27.26 % S

______

100.00 %

Empirical Formula:

Fe²⁺_2.25Pb_0.75Ge_0.65Fe²⁺_0.25S₄

Environment:

Epigenetic veinlets and metasomatic replacement zones replacing sandstone and older sulfides. Forms a series with morozeviczite.

IMA Status:

Approved IMA 1979

Locality:

Polkovice mine, Lower Silesia, Poland. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Name Pronunciation:

Polkovicite + Pronunciation

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Polkovicite Crystallography

Cell Dimensions:

a = 10.61, Z = 8; V = 1,194.39 Den(Calc)= 5.23

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/I_o): 3.08(1), 2.15(0.9), 2.8(0.6),

Physical Properties of Polkovicite

Cleavage:

None

Color:

Brownish gray.

Density:

6.62

Diaphaneity:

Opaque

Hardness:

3.5 - Copper Penny

Luster:

Metallic

Streak:

dark gray

Calculated Properties of Polkovicite

Electron Density:

Bulk Density (Electron Density)=4.70 gm/cc
note: Specific Gravity of Polkovicite =5.23 gm/cc.

Fermion Index:

Fermion Index = 0.08
Boson Index = 0.92

Photoelectric:

PE_Polkovicite= 582.11 barns/electron
U=PE_Polkovicite x rElectron Density=2,734.62 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Polkovicite is Not Radioactive

Polkovicite Classification

Dana Class:

02.09.05.02 (02)Sulfides - Including Selenides and Tellurides

(02.09)where Am Bn Xp, with (m+n):p=1:1

(02.09.05)Dana Group

02.09.05.01 Morozeviczite (Pb,Fe)3Ge1-xS4 F d3m 4/m 3 2/m

02.09.05.02 Polkovicite (Fe,Pb)3(Ge,Fe)1-xS4 F d3m 4/m 3 2/m

Strunz Class:

02.CB.35a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.C - Metal Sulfides, M:S = 1:1 (and similar)

02.CB -With Zn, Fe, Cu, Ag, Au, etc

02.CB.35a Hemusite Cu6SnMoS8 Unk Cubic

02.CB.35a Kiddcreekite Cu6SnWS8 Unk Cubic

02.CB.35a Renierite (Cu,Zn)11(Ge,As)2Fe4S16 P 4₂c- 4 2m

02.CB.35a Polkovicite (Fe,Pb)3(Ge,Fe)1-xS4 F d3m 4/m 3 2/m

02.CB.35a Morozeviczite (Pb,Fe)3Ge1-xS4 F d3m 4/m 3 2/m

02.CB.35a Catamarcaite! Cu6GeWS8 P 6₃mc 6/m 2/m 2/m

02.CB.35a Vinciennite Cu10Fe4Sn(As,Sb)S16 P 4₁22 4 2 2

Other Polkovicite Information

References:

NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Polkovicite :
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 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info

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

Polkovicite

(Fe,Pb)3(Ge,Fe)1-xS4
Dana No: 02.09.05.02 Strunz No: 02.CB.35a
Locality:

Notes: