Soucekite Mineral Data

General Soucekite Information

Chemical Formula:

PbCuBi(S,Se)3

Composition:

Molecular Weight = 632.20 gm

Copper 10.05 % Cu

Bismuth 33.06 % Bi

Lead 32.77 % Pb

Selenium 14.99 % Se

Sulfur 9.13 % S

______

100.00 %

Empirical Formula:

PbCuBiS_1.8Se_1.2

Environment:

In hydrothermal quartz-carbonate veins.

IMA Status:

Approved IMA 1979

Locality:

From Oldrichov, near Tachov, Czechoslovakia. Link to MinDat.org Location Data.

Name Origin:

Named for Frantisek Soucek, Department of Mineralogy, Charles University, Prague, Czechoslovakia.

Name Pronunciation:

Soucekite + Pronunciation

Soucekite Crystallography

Axial Ratios:

a:b:c =0.9594:1:0.9508

Cell Dimensions:

a = 8.153, b = 8.498, c = 8.08, Z = 4; V = 559.82 Den(Calc)= 7.50

Crystal System:

Orthorhombic - Pyramidal H-M Symbol (mm2) Space Group: Pn21m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.717(1), 2.757(1), 4.04(0.8),

Physical Properties of Soucekite

Color:

Lead gray.

Density:

7.6

Diaphaneity:

Opaque

Habit:

Anhedral Grains - Granular minerals without the expression of crystal shapes

Hardness:

4 - Fluorite

Luster:

Metallic

Optical Properties of Soucekite

RL Anisotrophism:

Medium strong, in light brown to dark blue-gray.

RL Color:

Creamy white with a brownish tint.

RL Pleochroism:

Distinct in oil, in creamy brown to light gray with a bluish tint.

Calculated Properties of Soucekite

Electron Density:

Bulk Density (Electron Density)=6.25 gm/cc
note: Specific Gravity of Soucekite =7.50 gm/cc.

Fermion Index:

Fermion Index = 0.08
Boson Index = 0.92

Photoelectric:

PE_Soucekite=1,259.48 barns/electron
U=PE_Soucekite x rElectron Density=7,877.24 barns/cc.

Radioactivity:

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

Soucekite Classification

Dana Class:

03.04.03.03 (03)Sulfides - Sulfosalts

(03.04)where z/y > 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(03.04.03)Seligmannite Group

03.04.03.01 Seligmannite PbCuAsS3 Pmmn 2/m 2/m 2/m

03.04.03.02 Bournonite PbCuSbS3 Pn21m 2/m 2/m 2/m

03.04.03.03 Soucekite PbCuBi(S,Se)3 Pn21m mm2

Strunz Class:

02.GA.50 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.G - Sulfarsenites, sulfantimonites, sulfbismuthites

02.GA -Neso-sulfarsenites, etc., without additional S

02.GA.50 Bournonite PbCuSbS3 Pn21m 2/m 2/m 2/m

02.GA.50 Seligmannite PbCuAsS3 Pmmn 2/m 2/m 2/m

02.GA.50 Soucekite PbCuBi(S,Se)3 Pn21m mm2

Other Soucekite Information

References:

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

See Also:

Links to other databases for Soucekite :
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
15 - WWW-MINCRYST

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

Soucekite

PbCuBi(S,Se)3
Dana No: 03.04.03.03 Strunz No: 02.GA.50
Locality:

Notes:

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