Chabourneite Mineral Data

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General Chabourneite Information

Chemical Formula:

(Tl,Pb)21(Sb,As)91S147

Composition:

Molecular Weight = 18184.75 gm

Thallium 15.73 % Tl

Antimony 33.48 % Sb

Arsenic 16.89 % As

Lead 7.98 % Pb

Sulfur 25.92 % S

______

100.00 %

Empirical Formula:

Tl₁₄Pb₇Sb₅₀As₄₁S₁₄₇

Environment:

Hydrothermal deposit in dolomitic limestones with other As-Tl minerals.

IMA Status:

Approved IMA 1976

Locality:

Jas Roux deposit, Hautes-Alpes, France. Link to MinDat.org Location Data.

Name Origin:

Named for the Chabourneou Glacier, near the locality.

Synonym:

ICSD 100315

PDF 35-474

Chabourneite Image

Images:

Click Here for Larger Chabourneite Image

Chabourneite Smithite

Comments: Black metallic chabourneite with conchoidal fracture, associated with yellow-red realgar and deep-red smithite.
Location: Jas Roux, Pelvoux Mt., Valgaudemar, Hautes-Alpes, Provence-Alpes-Côte d'Azur, France. Scale: See Image.
© Rruff Database

Chabourneite Crystallography

Axial Ratios:

a:b:c =0.3836:1:0.2003

Cell Dimensions:

a = 16.346, b = 42.602, c = 8.534, Z = 1; alpha = 95.86°, beta = 86.91°, gamma = 96.88° V = 5,860.68 Den(Calc)= 5.15

Crystal System:

Triclinic - PedialH-M Symbol (1) Space Group: P1

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

By Intensity(I/I_o): 3.573(1), 2.135(0.9), 2.808(0.8),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
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Help on Above

Nagl A , Zeitschrift fur Kristallographie , 150 (1979) p.85-106, The crystal structure of a thallium sulfosalt, Tl8Pb4Sb21As19S68, Locality: Jas Roux, France

Physical Properties of Chabourneite

Color:

Black.

Density:

5.1

Diaphaneity:

Opaque

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Hardness:

3-3.5 - Calcite-Copper Penny

Luster:

Sub Metallic

Streak:

brown red

Optical Properties of Chabourneite

RL Anisotrophism:

Strong, in bluish and greenish colors.

RL Color:

White with red internal reflections noted along cracks.

RL Pleochroism:

Weak.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Chabourneite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	32.40	40.50
420 nm	32.10	40.00
440 nm	31.80	39.50
460 nm	31.50	39.00
480 nm	31.30	38.40
500 nm	31.10	37.90
520 nm	31.00	37.30
540 nm	30.80	36.60
560 nm	30.60	35.80
580 nm	30.20	35.10
600 nm	29.60	34.30
620 nm	29.00	33.50
640 nm	28.20	32.80
660 nm	27.50	32.00
680 nm	26.80	31.30
700 nm	26.40	30.70

**Calculated Relative Intensity Colors of Chabourneite in Air**
Relative Intensity	0%	40%	80%	100%	120%	160%	200%	240%	280%	310%
R₁
R₂

Calculated Properties of Chabourneite

Electron Density:

Bulk Density (Electron Density)=4.51 gm/cc
note: Specific Gravity of Chabourneite =5.15 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Chabourneite= 530.46 barns/electron
U=PE_Chabourneite x rElectron Density=2,392.55 barns/cc.

Radioactivity:

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

Chabourneite Classification

Dana Class:

03.08.12.01 (03)Sulfides - Sulfosalts

(03.08)where 1 < z/y <2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(03.08.12)Dana Group

03.08.12.01 Chabourneite (Tl,Pb)21(Sb,As)91S147 P1 1

Strunz Class:

02.HC.05e 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.H - Sulfosalts of SnS Archetype

02.HC -With only Pb

02.HC.05e Chabourneite (Tl,Pb)21(Sb,As)91S147 P1 1

Other Chabourneite Information

References:

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

See Also:

Links to other databases for Chabourneite :
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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Chabourneite

(Tl,Pb)21(Sb,As)91S147
Dana No: 03.08.12.01 Strunz No: 02.HC.05e
Locality:

Notes: