Bezsmertnovite Mineral Data

Bezsmertnovite Mineral Data +

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General Bezsmertnovite Information

Chemical Formula:

Au4Cu(Te,Pb)

Composition:

Molecular Weight = 1,002.89 gm

Copper 6.34 % Cu

Tellurium 8.91 % Te

Lead 6.20 % Pb

Gold 78.56 % Au

______

100.00 %

Empirical Formula:

Au₄CuTe_0.7Pb_0.3

Environment:

Found in the cementation zone of a volcanogenic gold telluride deposit.

IMA Status:

Approved IMA 1979

Locality:

Kamchatka, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for Marianna S. Bezsmertnaya (1915-1991) and Valdimir V. Bezsmertny (1912-), Russian geologists.

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Bezsmertnovite Crystallography

Axial Ratios:

a:b:c =6.0161:1:4.036

Cell Dimensions:

a = 24.215, b = 4.025, c = 16.245, Z = 16; V = 1,583.33 Den(Calc)= 16.83

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pmmn

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

By Intensity(I/I_o): 1.744(0.9), 2.61(0.8), 3.3(0.7),

Physical Properties of Bezsmertnovite

Cleavage:

None

Color:

Bronze, Golden yellow.

Density:

16.3

Diaphaniety:

Opaque

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Hardness:

4.5 - Between Fluorite and Apatite

Luster:

Metallic

Optical Properties of Bezsmertnovite

RL Anisotrophism:

Weak, in neutral gray shades.

RL Color:

Bright orange yellow.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Bezsmertnovite in Air**
λ	R	∑ R(λ)
420 nm	15.10
440 nm	15.10
460 nm	15.70
480 nm	17.50
500 nm	21.20
520 nm	29.00
540 nm	37.50
560 nm	45.60
580 nm	52.40
600 nm	55.70
620 nm	57.40
640 nm	58.30
660 nm	58.70
680 nm	58.60
700 nm	58.20

**Calculated Relative Intensity Colors of Bezsmertnovite in Air**
Relative Intensity	0%	60%	100%	120%	180%	240%	300%	360%	420%	480%	540%
R

Calculated Properties of Bezsmertnovite

Electron Density:

r_electron=13.6 gm/cc
note: r_{Bezsmertnovite}=16.8 gm/cc.

Fermion Index

Fermion Index = 0.02081
Boson Index = 0.97919

Photoelectric:

PE_{Bezsmertnovite}=1,474.49 barns/electron
U=PE_{Bezsmertnovite} x r_electron=20092.17 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Bezsmertnovite is Not Radioactive

Bezsmertnovite Classification

Dana Class:

2.1.5.1 (2)Sulfides - Including Selenides and Tellurides

(2.1)where Am Xp, with m:p>3:1

(2.1.5)Dana Group

2.1.5.1 Bezsmertnovite Au4Cu(Te,Pb) Pmmn 2/m 2/m 2/m

Strunz Class:

II/A.03-10 II - Sulfides and sulphosalts

II/A - Alloys and alloylike compounds, with Copper, Silver, Gold and Nickel

II/A.03 - Bezsmertnovite - Maldonite series

II/A.03-10 Bezsmertnovite Au4Cu(Te,Pb) Pmmn 2/m 2/m 2/m

II/A.03-30 Bilibinskite Au3Cu2PbTe2 Unk Cubic

II/A.03-40 Maldonite Au2Bi F d3m 4/m 3 2/m

Other Bezsmertnovite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Bezsmertnovite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris

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Bezsmertnovite

Au4Cu(Te,Pb)
Dana No: 2.1.5.1 Strunz No: II/A.03-10
Locality:

Notes: