Sulphotsumoite Mineral Data

Sulphotsumoite Mineral Data +

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General Sulphotsumoite Information

Chemical Formula:

Bi3Te2S

Composition:

Molecular Weight = 914.21 gm

Bismuth 68.58 % Bi

Tellurium 27.91 % Te

Sulfur 3.51 % S

______

100.00 %

Empirical Formula:

Bi₃Te₂S

Environment:

Of hydrothermal origin, with other bismuth tellurides.

IMA Status:

Approved IMA 1982

Locality:

Magadan and Egerlyakh deposit, Yakutia, Russia. Link to MinDat.org Location Data.

Name Origin:

Named in allusion to the chemical relationship with tsumoite.

Sulphotsumoite Image

Images:

Sulphotsumoite

Comments: Dark gray sulphotsumoite, tarnishing, foliated in milky quartz.
Location: Mina de la Carcel, Zacatecas, Mexico. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Sulphotsumoite Crystallography

Axial Ratios:

a:c = 1:5.42863

Cell Dimensions:

a = 4.316, c = 23.43, Z = 2; V = 377.98 Den(Calc)= 8.03

Crystal System:

Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: P 3m1

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

By Intensity(I/I_o): 3.16(1), 2.32(0.6), 2.16(0.5),

Physical Properties of Sulphotsumoite

Cleavage:

[???] Perfect

Color:

Gray white.

Diaphaniety:

Opaque

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Massive - Uniformly indistinguishable crystals forming large masses.

Hardness:

2.5 - Finger Nail

Luster:

Metallic

Optical Properties of Sulphotsumoite

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Sulphotsumoite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
420 nm	51.80	53.80
440 nm	51.80	54.10
460 nm	52.00	54.70
480 nm	52.30	55.30
500 nm	52.70	56.00
520 nm	53.20	56.70
540 nm	53.60	57.30
560 nm	53.80	57.80
580 nm	53.90	58.00
600 nm	53.80	58.00
620 nm	53.70	58.00
640 nm	53.60	58.00
660 nm	53.60	57.90
680 nm	53.60	57.90
700 nm	53.60	57.80

**Calculated Relative Intensity Colors of Sulphotsumoite in Air**
Relative Intensity	0%	20%	40%	60%	80%	100%	120%	140%	160%	170%
R₁
R₂

Calculated Properties of Sulphotsumoite

Electron Density:

r_electron=6.48 gm/cc
note: r_{Sulphotsumoite}=8.03 gm/cc.

Fermion Index

Fermion Index = 0.02256
Boson Index = 0.97744

Photoelectric:

PE_{Sulphotsumoite}=1,473.38 barns/electron
U=PE_{Sulphotsumoite} x r_electron=9,550.83 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Sulphotsumoite is Not Radioactive

Sulphotsumoite Classification

Dana Class:

2.8.20.2 (2)Sulfides - Including Selenides and Tellurides

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

(2.8.20)Tsumoite Group (Trigonal: P3¯m1)

2.8.20.1 Tsumoite BiTe P 3m1 3 2/m

2.8.20.2 Sulphotsumoite Bi3Te2S P 3m1 3 2/m

2.8.20.3 Nevskite Bi(Se,S) P 3m1 3 2/m

2.8.20.4 Ingodite Bi(S,Te) P 3m1 3 2/m

2.8.20.5 Telluronevskite Bi3TeSe2 P 3m1 3 2/m

Strunz Class:

II/D.10-40 II - Sulfides and sulphosalts

II/D - Sulfides with metal: sulfur, selenium and tellurium < 1:1, Tellurides with Copper, Silver, Gold

II/D.10 - Tetradymite group, Nevskite - Tsumoite series

II/D.10-10 Nevskite Bi(Se,S) P 3m1 3 2/m

II/D.10-30 Ingodite Bi(S,Te) P 3m1 3 2/m

II/D.10-35 Sztrokayite* Bi3TeS2 Trig ? Trig

II/D.10-40 Sulphotsumoite Bi3Te2S P 3m1 3 2/m

II/D.10-50 Tsumoite BiTe P 3m1 3 2/m

II/D.10-55 Telluronevskite Bi3TeSe2 P 3m1 3 2/m

II/D.10-60 Protojoseite* Bi4TeS2(?) R 3m 3 2/m

II/D.10-70 Baksanite! Bi6Te2S3 P 3m1 3 2/m

Other Sulphotsumoite Information

References:

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

See Also:

Links to other databases for Sulphotsumoite :
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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Sulphotsumoite

Bi3Te2S
Dana No: 2.8.20.2 Strunz No: II/D.10-40
Locality:

Notes: