IMA2003-039 Mineral Data

IMA2003-039 Mineral Data

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General IMA2003-039 Information

Chemical Formula:

Pb2(Pb,Sb)2S8[Te,Au]2

Composition:

Molecular Weight = 1,332.49 gm

Antimony 4.57 % Sb

Tellurium 14.36 % Te

Lead 54.42 % Pb

Gold 7.39 % Au

Sulfur 19.25 % S

______

100.00 %

Empirical Formula:

Pb₂Pb_1.5Sb_0.5S₈Te_1.5Au_0.5

Environment:

Nagyágite-buckhornite homologous series

IMA Status:

Proposed IMA 2003 (Dana # Added)

Locality:

Link to MinDat.org Location Data.

Name Origin:

Commission on New Minerals and Mineral Names (CNMMN)

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IMA2003-039 Crystallography

Axial Ratios:

a:b:c =0.6589:1:3.1517

Cell Dimensions:

a = 4.361, b = 6.618, c = 20.858, Z = 2; beta = 92.71° V = 601.31 Den(Calc)= 7.36

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/m

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

By Intensity(I/I_o): 3.56(1), 3.47(0.58), 4.8(0.52),2.99(0.5), 2.56(0.41), 3.31(0.4), 4.1(0.4), 6.93(0.38), 2.98(0.3),

Physical Properties of IMA2003-039

Color:

Dark silver gray.

Diaphaniety:

Opaque

Luster:

Metallic

Optical Properties of IMA2003-039

RL Anisotrophism:

Distinct.

RL Bireflectance:

Very low.

RL Color:

Gray.

RL Pleochroism:

Very low.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of IMA2003-039 in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
470 nm	38.40	40.30
546 nm	38.10	39.40
589 nm	37.50	39.40
650 nm	35.90	38.00

**Calculated Relative Intensity Colors of IMA2003-039 in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%	240%
R₁
R₂

Calculated Properties of IMA2003-039

Electron Density:

r_electron=6.16 gm/cc
note: r_IMA2003-039=7.36 gm/cc.

Fermion Index

Fermion Index = 0.13319
Boson Index = 0.86681

Photoelectric:

PE_IMA2003-039=1,187.44 barns/electron
U=PE_IMA2003-039 x r_electron=7,319.66 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

IMA2003-039 is Not Radioactive

IMA2003-039 Classification

Dana Class:

2.11.14.1 (2)Sulfides - Including Selenides and Tellurides

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

(2.11.14)Dana Group

2.11.14.1 IMA2003-039 ! Pb2(Pb,Sb)2S8[Te,Au]2 P 2₁/m 2/m

Strunz Class:

II/X.00-00 II - Sulfides and sulphosalts

II/X - Unclassified Strunz Sulfides and sulphosalts

II/X.00 - Nagyágite-buckhornite series

Other IMA2003-039 Information

See Also:

Links to other databases for IMA2003-039 :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - Google Images
4 - Google Scholar
5 - MinDAT
6 - MinMax(Deutsch)
7 - MinMax(English)
8 - Mineralienatlas (Deutsch)
9 - Ruff.Info

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Print or Cut-and-Paste your IMA2003-039 Specimen Label here :

IMA2003-039

Pb2(Pb,Sb)2S8[Te,Au]2
Dana No: 2.11.14.1 Strunz No: II/X.00-00
Locality:

Notes: