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Clausthalite Mineral Data
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General Clausthalite Information
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 Chemical Formula: |
PbSe |
| Composition: |
Molecular Weight = 286.16 gm |
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Lead 72.41 % Pb |
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Selenium 27.59 % Se |
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______ |
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100.00 % |
| Empirical Formula: |
PbSe |
| Environment: |
Associated with low-sulfur hydrothermal deposits with other selenides. |
| IMA Status: |
Valid Species (Pre-IMA) 1832 |
| Locality: |
Lorenz Mine near Clausthal, Harz, Germany. Link to MinDat.org Location Data. |
| Name Origin: |
Named after its locality. |
| Synonym: |
ICSD 38294 |
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Lerbachite |
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PDF 6-354 |
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Tilkerodite |
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Zorgite |
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Clausthalite Image |
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Images:
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Images:
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Schlemaite Clausthalite 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 |
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Clausthalite Crystallography
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| Cell Dimensions: |
a = 6.147, Z = 4; V = 232.27 Den(Calc)= 8.18 |
| Crystal System: |
Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F m3m |
| X Ray Diffraction: |
By Intensity(I/Io): 3.06(1), 2.165(0.7), 3.54(0.3), |
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Physical Properties of Clausthalite
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| Cleavage: |
{001} Perfect, {010} Perfect, {100} Perfect |
| Color: |
Lead gray, Blue gray, Grayish black. |
| Density: |
7.6 - 8.8, Average = 8.19 |
| Diaphaneity: |
Opaque |
| Fracture: |
Brittle - Generally displayed by glasses and most non-metallic minerals. |
| Habit: |
Euhedral Crystals - Occurs as well-formed crystals showing good external form. |
| Habit: |
Granular - Generally occurs as anhedral to subhedral crystals in matrix. |
| Habit: |
Massive - Granular - Common texture observed in granite and other igneous rock. |
| Hardness: |
2.5 - Finger Nail |
| Luminescence: |
Non-fluorescent. |
| Luster: |
Metallic |
| Magnetism: |
Nonmagnetic |
| Streak: |
grayish black |
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Optical Properties of Clausthalite
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| RL Color: |
Galena-white with a grayish tinge. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Clausthalite in Air
| λ |
R |
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∑ R(λ) |
| 400 nm |
62.00 |
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| 420 nm |
60.50 |
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| 440 nm |
59.00 |
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| 460 nm |
57.30 |
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| 480 nm |
55.60 |
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| 500 nm |
54.00 |
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| 520 nm |
52.60 |
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| 540 nm |
51.30 |
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| 560 nm |
50.20 |
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| 580 nm |
49.20 |
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| 600 nm |
48.40 |
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| 620 nm |
47.70 |
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| 640 nm |
47.30 |
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| 660 nm |
47.00 |
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| 680 nm |
47.00 |
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| 700 nm |
47.20 |
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Calculated Relative Intensity Colors of Clausthalite in Air
Relative
Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
140% |
160% |
180% |
| R |
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Calculated Properties of Clausthalite
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| Electron Density: |
Bulk Density (Electron Density)=6.63 gm/cc
note: Specific Gravity of Clausthalite =8.18 gm/cc.
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| Fermion Index: |
Fermion Index = 0.18
Boson Index = 0.82 |
| Photoelectric: |
PEClausthalite =1,394.86 barns/electron
U=PEClausthalite x rElectron Density=9,250.43 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Clausthalite is Not Radioactive |
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Clausthalite Classification
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| Dana Class: |
02.08.01.02 (02)Sulfides - Including Selenides and Tellurides |
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(02.08)where Am Bn Xp, with (m+n):p=1:1 |
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(02.08.01)Galena Group (Isometric: Fm3m) |
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02.08.01.01 Galena PbS F m3m 4/m 3 2/m |
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02.08.01.02 Clausthalite PbSe F m3m 4/m 3 2/m |
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02.08.01.03 Altaite PbTe F m3m 4/m 3 2/m |
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02.08.01.04 Alabandite MnS F m3m 4/m 3 2/m |
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02.08.01.05 Oldhamite (Ca,Mg,Fe)S F m3m 4/m 3 2/m |
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02.08.01.06 Niningerite (Mg,Fe,Mn)S F m3m 4/m 3 2/m |
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02.08.01.07 Borovskite Pd3SbTe4 F m3m 4/m 3 2/m |
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02.08.01.08 Crerarite (Pt,Pb)Bi3(S,Se)4-x(x~0.7) F m3m 4/m 3 2/m |
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02.08.01.09 Keilite! (Fe,Mn,Mg,Ca,Cr)S F m3m 4/m 3 2/m |
| Strunz Class: |
02.CD.10 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.C - Metal Sulfides, M:S = 1:1 (and similar) |
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02.CD -With Sn, Pb, Hg, etc. |
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02.CD.10 Alabandite MnS F m3m 4/m 3 2/m |
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02.CD.10 Altaite PbTe F m3m 4/m 3 2/m |
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02.CD.10 Galena PbS F m3m 4/m 3 2/m |
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02.CD.10 Clausthalite PbSe F m3m 4/m 3 2/m |
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02.CD.10 Niningerite (Mg,Fe,Mn)S F m3m 4/m 3 2/m |
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02.CD.10 Oldhamite (Ca,Mg,Fe)S F m3m 4/m 3 2/m |
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02.CD.10 Keilite! (Fe,Mn,Mg,Ca,Cr)S F m3m 4/m 3 2/m |
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Other Clausthalite Information
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| References: |
NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Clausthalite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - HyperPhysics
12 - MinDAT
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - QUT Mineral Atlas
16 - Ruff.Info
17 - WWW-MINCRYST
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Clausthalite
PbSe
Dana No: 02.08.01.02 Strunz No: 02.CD.10
Locality:
Notes:
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