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Klockmannite Mineral Data
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General Klockmannite Information
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 Chemical Formula: |
CuSe |
| Composition: |
Molecular Weight = 142.51 gm |
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Copper 44.59 % Cu |
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Selenium 55.41 % Se |
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______ |
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100.00 % |
| Empirical Formula: |
CuSe |
| Environment: |
Of hydrothermal origin. |
| IMA Status: |
Valid Species (Pre-IMA) 1928 |
| Locality: |
Sierra de Umango, La Rioja province, Argentina. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Friedrich Klockmann (1857-1937), German mineralogist of Aachen. |
| Name Pronunciation: |
Klockmannite + Pronunciation  |
| Synonym: |
ICSD 82331 |
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PDF 34-171 |
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Klockmannite Image |
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Images:
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Klockmannite
Comments: Klockmannite intergrown with covellite on quartz.
Location: Lichtenberg Mine, Ronneburg U Deposit, Gera district, Thuringia, Germany.
Scale: Picture size 7.5 mm.
© Thomas Witzke / Abraxas-Verlag |
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Images:
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Fischesserite Klockmannite
Comments: Pinkish-grey fischesserite (Fl) with fine-grained bluish-grey klockmannite (Kl) and grey clausthalite (Cl). Polished section from microprobe analysis in reflected light, parallel nicols.
Location: Predborice, Bohemia, Czech Republic.
Scale: Picture size 0.7 mm.
© Thomas Witzke |
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Klockmannite Crystallography
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| Axial Ratios: |
a:c = 1:4.38039 |
| Cell Dimensions: |
a = 3.938, c = 17.25, Z = 6; V = 231.67 Den(Calc)= 6.13 |
| Crystal System: |
Hexagonal - Dihexagonal Dipyramidal H-M Symbol (6/m 2/m 2/m) Space Group: P 63/mmc |
| X Ray Diffraction: |
By Intensity(I/Io): 2.88(1), 3.18(0.9), 1.967(0.8), |
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Physical Properties of Klockmannite
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| Cleavage: |
{0001} Perfect |
| Color: |
Blue black, Grayish black, Dark gray. |
| Density: |
5.99 |
| Diaphaneity: |
Opaque |
| Habit: |
Aggregates - Made of numerous individual crystals or clusters. |
| Habit: |
Granular - Generally occurs as anhedral to subhedral crystals in matrix. |
| Hardness: |
2-2.5 - Gypsum-Finger Nail |
| Luster: |
Metallic - Dull |
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Optical Properties of Klockmannite
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| RL Anisotrophism: |
Strong, brownish gray to gray-white. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Klockmannite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
17.20 |
43.70 |
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| 420 nm |
17.20 |
42.80 |
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| 440 nm |
17.20 |
41.90 |
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| 460 nm |
17.00 |
41.00 |
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| 480 nm |
16.90 |
40.00 |
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| 500 nm |
16.60 |
39.20 |
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| 520 nm |
16.20 |
38.30 |
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| 540 nm |
15.80 |
37.40 |
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| 560 nm |
15.10 |
36.60 |
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| 580 nm |
14.40 |
35.80 |
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| 600 nm |
13.80 |
35.00 |
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| 620 nm |
13.60 |
34.20 |
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| 640 nm |
13.80 |
33.20 |
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| 660 nm |
14.70 |
32.40 |
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| 680 nm |
16.20 |
31.60 |
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| 700 nm |
18.80 |
30.80 |
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Calculated Relative Intensity Colors of Klockmannite in Air
Relative
Intensity |
0% |
60% |
100% |
120% |
180% |
240% |
300% |
360% |
420% |
480% |
540% |
580% |
| R1 |
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| R2 |
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Calculated Properties of Klockmannite
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| Electron Density: |
Bulk Density (Electron Density)=5.42 gm/cc
note: Specific Gravity of Klockmannite =6.13 gm/cc.
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| Fermion Index: |
Fermion Index = 0.04
Boson Index = 0.96 |
| Photoelectric: |
PEKlockmannite = 65.16 barns/electron
U=PEKlockmannite x rElectron Density= 353.17 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Klockmannite is Not Radioactive |
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Klockmannite Classification
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| Dana Class: |
02.08.12.02 (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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(02.08.12)Covellite Group |
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02.08.12.01 Covellite CuS P 63/mmc 6/m 2/m 2/m |
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02.08.12.02 Klockmannite CuSe P 63/mmc 6/m 2/m 2/m |
| Strunz Class: |
02.CA.05b 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.CA -With Cu |
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02.CA.05b Klockmannite CuSe P 63/mmc 6/m 2/m 2/m |
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Other Klockmannite Information
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| References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Klockmannite :
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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Klockmannite
CuSe
Dana No: 02.08.12.02 Strunz No: 02.CA.05b
Locality:
Notes:
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