Teallite Mineral Data

Teallite Mineral Data +

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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.

Teallite Image

Images:

Teallite

Comments: Gray, metallic vein of coarsely crystalline teallite.
Location: Carguaycollo mine (type locality), Potos? , 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

Diaphaniety:

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:

r_electron=5.47 gm/cc
note: r_Teallite=6.50 gm/cc.

Fermion Index

Fermion Index = 0.16921
Boson Index = 0.83079

Photoelectric:

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

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Teallite is Not Radioactive

Teallite Classification

Dana Class:

2.9.10.1 (2)Sulfides - Including Selenides and Tellurides

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

(2.9.10)Dana Group

2.9.10.1 Teallite PbSnS2 Pbnm 2/m 2/m 2/m

Strunz Class:

II/C.17-40 II - Sulfides and sulphosalts

II/C - Sulfides with metal: sulfur, selenium and tellurium = 1:1

II/C.17 - Hertzenbergite - Kylindrite series

II/C.17-10 Herzenbergite SnS Pbnm 2/m 2/m 2/m

II/C.17-20 Stistaite SnSb R 3m 3 2/m

II/C.17-30 Mohite Cu2SnS3 P1 1

II/C.17-40 Teallite PbSnS2 Pbnm 2/m 2/m 2/m

II/C.17-45 Suredaite! PbSnS3 P nma 2/m 2/m 2/m

II/C.17-50 Potosiite Pb6Sn2FeSb2S14 P 1 ? 1

II/C.17-55 Levyclaudite Pb8Sn7Cu3(Bi,Sb)3S28 A2 ? 2

II/C.17-60 Incaite Pb4Sn4FeSb2S15 P1 ? 1

II/C.17-70 Franckeite (Pb,Sn)6FeSn2Sb2S14 P1 1

II/C.17-80 Cylindrite Pb3Sn4FeSb2S14 P1 1

Other Teallite Information

References:

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

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Teallite

PbSnS2
Dana No: 2.9.10.1 Strunz No: II/C.17-40
Locality:

Notes: