Clausthalite Mineral Data


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General Clausthalite Information
Help on Chemical Formula: Chemical Formula: PbSe
Help on Composition: Composition: Molecular Weight = 286.16 gm
   Lead      72.41 %  Pb
   Selenium  27.59 %  Se
            ______ 
            100.00 % 
Help on Empirical Formula: Empirical Formula: PbSe
Help on Environment: Environment: Associated with low-sulfur hydrothermal deposits with other selenides.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1832
Help on Locality: Locality: Lorenz Mine near Clausthal, Harz, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its locality.
Help on Synonym: Synonym: ICSD 38294
  Lerbachite
  PDF 6-354
  Tilkerodite
  Zorgite
 

Clausthalite Image

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Clausthalite

Comments: black massive and botryoidal clausthalite on matrix.
Location: Lasovice, Mittelbuhmen, Stredocesky, Czech Republic. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species
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Clausthalite   Schlemaite   Eucairite

Comments: Reflected-light digital-image of the intermixed schlemaite grain in type sample F2, from which the reflectance, crystallographic and crystal-structure data were obtained. (CanMin, v 41, p 1435).
Location: "Tiber" dike, -855-m level, block 5128, main shaft # 371, Niederschlema-Alberoda vein-type uranium depost at Hartensein, Erzgebirge, Germany. Scale: See Picture.
© Canadian Mineralogist

Clausthalite Crystallography
Help on Cell Dimensions: Cell Dimensions: a = 6.147, Z = 4; V = 232.27 Den(Calc)= 8.18
Help on Crystal System: Crystal System: Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F m3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.06(1), 2.165(0.7), 3.54(0.3),
Click Here for Large Clausthalite Structure Window Crystal Structure:

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Ramsdell L S , American Mineralogist , 10 (1925) p.281-304, The crystal structures of some metallic sulfides

View Additional jPOWD Structure files for Clausthalite
[1]
 

Physical Properties of Clausthalite

Help on Cleavage: Cleavage: [001] Perfect, [010] Perfect, [100] Perfect
Help on Color: Color: Lead gray, Blue gray, Grayish black.
Help on Density: Density: 7.6 - 8.8, Average = 8.19
Help on Diaphaniety: Diaphaniety: Opaque
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Habit: Habit: Massive - Granular - Common texture observed in granite and other igneous rock.
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luminescence: Luminescence: None.
Help on Luster: Luster: Metallic
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: grayish black
 

Optical Properties of Clausthalite

Help on RL Color: RL Color: Galena-white with a grayish tinge.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Clausthalite in Air
λ R  ∑ R(λ) 
 400 nm   62.00   
 420 nm   60.50 
 440 nm   59.00 
 460 nm   57.30 
 480 nm   55.60 
 500 nm   54.00 
 520 nm   52.60 
 540 nm   51.30 
 560 nm   50.20 
 580 nm   49.20 
 600 nm   48.40 
 620 nm   47.70 
 640 nm   47.30 
 660 nm   47.00 
 680 nm   47.00 
 700 nm   47.20 
Calculated Relative Intensity Colors of Clausthalite in Air
Relative
Intensity		    0%   20%   40%   60%   80% 100% 120% 140% 160% 180%
R                    
 

Calculated Properties of Clausthalite

Help on Electron Density: Electron Density:

relectron=6.63 gm/cc
note: rClausthalite =8.18 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.18099
Boson Index = 0.81901
Help on Photoelectric: Photoelectric:

PEClausthalite =1,394.86 barns/electron
U=PEClausthalite x relectron=9,250.43 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Clausthalite is Not Radioactive
 

Clausthalite Classification
Help on Dana Class: Dana Class: 2.8.1.2 (2)Sulfides - Including Selenides and Tellurides
  (2.8)where Am Bn Xp, with (m+n):p=1:1
  (2.8.1)Galena Group (Isometric: Fm3m)
 
2.8.1.1 Galena PbS F m3m 4/m 3 2/m
 
2.8.1.2 Clausthalite PbSe F m3m 4/m 3 2/m
 
2.8.1.3 Altaite PbTe F m3m 4/m 3 2/m
 
2.8.1.4 Alabandite MnS F m3m 4/m 3 2/m
 
2.8.1.5 Oldhamite (Ca,Mg,Fe)S F m3m 4/m 3 2/m
 
2.8.1.6 Niningerite (Mg,Fe,Mn)S F m3m 4/m 3 2/m
 
2.8.1.7 Borovskite Pd3SbTe4 F m3m 4/m 3 2/m
 
2.8.1.8 Crerarite (Pt,Pb)Bi3(S,Se)4-x(x~0.7) F m3m 4/m 3 2/m
 
2.8.1.9 Keilite! (Fe,Mg)S F m3m 4/m 3 2/m
Help on Strunz Class: Strunz Class: II/C.15-50 II - Sulfides and sulphosalts
  II/C - Sulfides with metal: sulfur, selenium and tellurium = 1:1
  II/C.15 - Galenite group
 
II/C.15-05 Keilite! (Fe,Mg)S F m3m 4/m 3 2/m
 
II/C.15-10 Niningerite (Mg,Fe,Mn)S F m3m 4/m 3 2/m
 
II/C.15-20 Oldhamite (Ca,Mg,Fe)S F m3m 4/m 3 2/m
 
II/C.15-30 Alabandite MnS F m3m 4/m 3 2/m
 
II/C.15-40 Galena PbS F m3m 4/m 3 2/m
 
II/C.15-50 Clausthalite PbSe F m3m 4/m 3 2/m
 
II/C.15-60 Altaite PbTe F m3m 4/m 3 2/m
 
II/C.15-70 Crerarite (Pt,Pb)Bi3(S,Se)4-x(x~0.7) F m3m 4/m 3 2/m
 

Other Clausthalite Information
Help on References: References: NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Clausthalite :
1 -Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 -Athena 4 - Crocoite.com Mineral Locations 5 - EUROmin Project 6 -Google Images 7 -Google Scholar 8 -Handbook of Mineralogy (UofA) 9 - HyperPhysics 10 -MinDAT 11 -MinMax(Deutsch) 12 -MinMax(English) 13 -Mineralienatlas (Deutsch) 14 -QUT Mineral Atlas 15 - WWW-MINCRYST 16 -École des Mines de Paris

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Clausthalite

PbSe
Dana No: 2.8.1.2 Strunz No: II/C.15-50
Locality:

 

Notes:

 
 
   
 
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