Teallite Mineral Data

General Teallite Information

Chemical Formula:

PbSnS2

Composition:

Molecular Weight = 390.04 gm

Tin 30.44 % Sn

Lead 53.12 % Pb

Sulfur 16.44 % S

______

100.00 %

Empirical Formula:

PbSnS₂

Environment:

A hydrothermal mineral found in tin veins, sometimes an important ore.

IMA Status:

Valid Species (Pre-IMA) 1904

Locality:

Silver mines of Santa Rosa, Antequera, Bolivia. Link to MinDat.org Location Data.

Name Origin:

Named for Jethro Justinian Harris Teall (1849-1924), Director of the Geological Survey of Great Britain and Ireland.

Name Pronunciation:

Teallite

Teallite Image

Images:

Teallite

Comments: Gray, metallic vein of coarsely crystalline teallite.
Location: Carguaycollo mine (type locality), PotosÃ , Bolivia. Scale: 4.5x4x2.5 cm.
© Fabre Minerals

Teallite Crystallography

Axial Ratios:

a:b:c =0.3735:1:0.3581

Cell Dimensions:

a = 4.266, b = 11.419, c = 4.09, Z = 2; V = 199.24 Den(Calc)= 6.50

Crystal System:

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

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

By Intensity(I/I_o): 2.856(1), 3.327(0.16), 3.416(0.1),

Forms:

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Forms: ( 0 2 1) ( 1 0 1) ( 1 1 1) ( 0 1 1) ( 1 1 0) ( 0 0 1)

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Crystal Structure:

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Sejkora J , Berlepsch P , Makovicky E , Balic-Zunic T , Litochleb J , Neues Jahrbuch fur Mineralogie, Abhandlungen , 177 (2002) p.163-180, Teallite from Radvanice near Trutnov (Czech Republic), Sample: Isotropic refinement, Locality: Radvanice near Trutnov, Czech Republic

View Additional jPOWD Structure files for Teallite
[1]

Physical Properties of Teallite

Cleavage:

{001} Perfect

Color:

Lead gray, Grayish black, Iron gray.

Density:

6.4

Diaphaneity:

Opaque

Fracture:

Elastic - Fragments which spring back after bending.

Habit:

Micaceous - Platy texture with "flexible" plates.

Hardness:

1.5-2 - Talc-Gypsum

Luster:

Metallic

Streak:

black

Optical Properties of Teallite

RL Anisotrophism:

Distinct to rather high.

RL Color:

White with a slight yellow tint.

RL Pleochroism:

Weak, in white with light golden tint to pure white.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Teallite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	41.90	48.20
420 nm	42.60	48.90
440 nm	43.30	49.60
460 nm	43.70	49.60
480 nm	43.80	49.40
500 nm	43.80	48.70
520 nm	43.60	48.00
540 nm	43.40	47.20
560 nm	43.10	46.60
580 nm	42.70	46.00
600 nm	42.20	45.40
620 nm	41.60	44.90
640 nm	41.10	44.40
660 nm	40.60	44.00
680 nm	40.10	43.60
700 nm	39.60	43.20

**Calculated Relative Intensity Colors of Teallite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%	220%
R₁
R₂

Calculated Properties of Teallite

Electron Density:

Bulk Density (Electron Density)=5.47 gm/cc
note: Specific Gravity of Teallite =6.50 gm/cc.

Fermion Index:

Fermion Index = 0.16
Boson Index = 0.84

Photoelectric:

PE_Teallite=1,070.38 barns/electron
U=PE_Teallite x rElectron Density=5,850.80 barns/cc.

Radioactivity:

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

Teallite Classification

Dana Class:

02.09.10.01 (02)Sulfides - Including Selenides and Tellurides

(02.09)where Am Bn Xp, with (m+n):p=1:1

(02.09.10)Dana Group

02.09.10.01 Teallite PbSnS2 Pbnm 2/m 2/m 2/m

Strunz Class:

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

02.C - Metal Sulfides, M:S = 1:1 (and similar)

02.CD -With Sn, Pb, Hg, etc.

02.CD.05 Herzenbergite SnS Pbnm 2/m 2/m 2/m

02.CD.05 Teallite PbSnS2 Pbnm 2/m 2/m 2/m

Other Teallite Information

References:

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

See Also:

Links to other databases for Teallite :
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 Teallite Specimen Label here :

Teallite

PbSnS2
Dana No: 02.09.10.01 Strunz No: 02.CD.05
Locality:

Notes: