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Bukovite Mineral Data
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General Bukovite Information
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 Chemical Formula: |
Tl2Cu3FeSe4 |
| Composition: |
Molecular Weight = 971.09 gm |
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Thallium 42.09 % Tl |
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Iron 5.75 % Fe |
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Copper 19.63 % Cu |
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Selenium 32.52 % Se |
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______ |
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100.00 % |
| Empirical Formula: |
Tl2Cu3Fe2+Se4 |
| Environment: |
In calcite veins of hydrothermal origin, in metamorphic rocks. |
| IMA Status: |
Approved IMA 1971 |
| Locality: |
From Bukov, Petrovice, and Predborice, Czechoslovakia. Link to MinDat.org Location Data. |
| Name Origin: |
For its occurrence at Bukov, Czechoslovakia. |
| Name Pronunciation: |
Bukovite  |
| Synonym: |
ICSD 40327 |
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PDF 33-497 |
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Bukovite Image |
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Images:
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Bukovite Crystallography
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| Axial Ratios: |
a:c = 1:3.45763 |
| Cell Dimensions: |
a = 3.966, c = 13.713, Z = 1; V = 215.69 Den(Calc)= 7.48 |
| Crystal System: |
Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: I 4/mmm |
| X Ray Diffraction: |
By Intensity(I/Io): 2.995(1), 3.43(0.7), 1.714(0.6), |
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Physical Properties of Bukovite
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| Cleavage: |
{001} Good, {100} Distinct |
| Color: |
Gray brown, Black. |
| Density: |
7.36 |
| Diaphaneity: |
Opaque |
| Habit: |
Inclusions - Generally found as inclusions in other minerals. |
| Hardness: |
2 - Gypsum |
| Luster: |
Metallic |
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Optical Properties of Bukovite
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| RL Pleochroism: |
Weak, creamy gray to gray. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Bukovite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
20.00 |
28.10 |
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| 420 nm |
23.00 |
28.90 |
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| 440 nm |
26.00 |
29.70 |
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| 460 nm |
27.30 |
30.00 |
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| 480 nm |
27.90 |
30.20 |
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| 500 nm |
28.20 |
30.10 |
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| 520 nm |
28.00 |
29.80 |
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| 540 nm |
27.70 |
29.40 |
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| 560 nm |
27.20 |
28.80 |
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| 580 nm |
26.50 |
28.20 |
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| 600 nm |
25.70 |
27.60 |
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| 620 nm |
25.00 |
27.00 |
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| 640 nm |
24.20 |
26.40 |
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| 660 nm |
23.30 |
25.80 |
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| 680 nm |
22.50 |
25.20 |
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| 700 nm |
21.90 |
24.60 |
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Calculated Relative Intensity Colors of Bukovite in Air
Relative
Intensity |
0% |
40% |
80% |
100% |
120% |
160% |
200% |
240% |
280% |
320% |
360% |
| R1 |
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| R2 |
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Calculated Properties of Bukovite
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| Electron Density: |
Bulk Density (Electron Density)=6.33 gm/cc
note: Specific Gravity of Bukovite =7.48 gm/cc.
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| Fermion Index: |
Fermion Index = 0.02
Boson Index = 0.98 |
| Photoelectric: |
PEBukovite = 770.08 barns/electron
U=PEBukovite x rElectron Density=4,875.83 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Bukovite is Not Radioactive |
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Bukovite Classification
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| Dana Class: |
02.05.05.02 (02)Sulfides - Including Selenides and Tellurides |
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(02.05)where Am Bn Xp, with (m+n):p=3:2 |
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(02.05.05)Thalcusite Group |
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02.05.05.01 Thalcusite TlCu3FeS4 I 4/mmm 4/m 2/m 2/m |
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02.05.05.02 Bukovite Tl2Cu3FeSe4 I 4/mmm 4/m 2/m 2/m |
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02.05.05.03 Murunskite K2Cu3FeS4 I 4/mmm 4/m 2/m 2/m |
| Strunz Class: |
02.BD.30 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.B - Metal Sulfides, M:S > 1:1 (mainly 2:1) |
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02.BD -With Hg, Tl |
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02.BD.30 Bukovite Tl2Cu3FeSe4 I 4/mmm 4/m 2/m 2/m |
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02.BD.30 Murunskite K2Cu3FeS4 I 4/mmm 4/m 2/m 2/m |
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02.BD.30 Thalcusite TlCu3FeS4 I 4/mmm 4/m 2/m 2/m |
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Other Bukovite 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 Bukovite :
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
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Print or Cut-and-Paste your Bukovite Specimen Label here :
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Bukovite
Tl2Cu3FeSe4
Dana No: 02.05.05.02 Strunz No: 02.BD.30
Locality:
Notes:
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