Bukovite Mineral Data

General Bukovite Information

Chemical Formula:

Tl2Cu3FeSe4

Composition:

Molecular Weight = 971.09 gm

Thallium 42.09 % Tl

Iron 5.75 % Fe

Copper 19.63 % Cu

Selenium 32.52 % Se

______

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

PDF 33-497

Bukovite Image

Images:

Bukovite

Comments: Silvery metallic minute aggregates of bukovite in white calcite (polished mount).
Location: Predborice, Stredocesky, Czech Republic. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Bukovite Crystallography

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 DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: I 4/mmm

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

By Intensity(I/I_o): 2.995(1), 3.43(0.7), 1.714(0.6),

Physical Properties of Bukovite

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

Optical Properties of Bukovite

RL Pleochroism:

Weak, creamy gray to gray.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Bukovite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	20.00	28.10
420 nm	23.00	28.90
440 nm	26.00	29.70
460 nm	27.30	30.00
480 nm	27.90	30.20
500 nm	28.20	30.10
520 nm	28.00	29.80
540 nm	27.70	29.40
560 nm	27.20	28.80
580 nm	26.50	28.20
600 nm	25.70	27.60
620 nm	25.00	27.00
640 nm	24.20	26.40
660 nm	23.30	25.80
680 nm	22.50	25.20
700 nm	21.90	24.60

**Calculated Relative Intensity Colors of Bukovite in Air**
Relative Intensity	0%	40%	80%	100%	120%	160%	200%	240%	280%	320%	360%
R₁
R₂

Calculated Properties of Bukovite

Electron Density:

Bulk Density (Electron Density)=6.33 gm/cc
note: Specific Gravity of Bukovite =7.48 gm/cc.

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_Bukovite= 770.08 barns/electron
U=PE_Bukovite x rElectron Density=4,875.83 barns/cc.

Radioactivity:

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

Bukovite Classification

Dana Class:

02.05.05.02 (02)Sulfides - Including Selenides and Tellurides

(02.05)where Am Bn Xp, with (m+n):p=3:2

(02.05.05)Thalcusite Group

02.05.05.01 Thalcusite TlCu3FeS4 I 4/mmm 4/m 2/m 2/m

02.05.05.02 Bukovite Tl2Cu3FeSe4 I 4/mmm 4/m 2/m 2/m

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

02.B - Metal Sulfides, M:S > 1:1 (mainly 2:1)

02.BD -With Hg, Tl

02.BD.30 Bukovite Tl2Cu3FeSe4 I 4/mmm 4/m 2/m 2/m

02.BD.30 Murunskite K2Cu3FeS4 I 4/mmm 4/m 2/m 2/m

02.BD.30 Thalcusite TlCu3FeS4 I 4/mmm 4/m 2/m 2/m

Other Bukovite Information

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

Search for Bukovite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Bukovite :

A Bijoux Google Search for Bukovite
Adam's Minerals Google Search for Bukovite
Cape Minerals Google Search for Bukovite
Dakota Matrix Minerals Google Search for Bukovite
Excalibur Mineral Corp. Google Search for Bukovite
Exceptional Minerals Google Search for Bukovite
John Betts Fine Minerals Search for Bukovite
McDougall Minerals Google Search for Bukovite
Mineral News Website Link
Rock and Mineral Shows Google Search for Bukovite
Weinrich Minerals, Inc. Google Search for Bukovite

Ask about Bukovite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Bukovite

Tl2Cu3FeSe4
Dana No: 02.05.05.02 Strunz No: 02.BD.30
Locality:

Notes: