Protojoseite Mineral Data

Protojoseite Mineral Data +

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General Protojoseite Information

Chemical Formula:

Bi4TeS2 (?)

Composition:

Molecular Weight = 1,027.65 gm

Bismuth 81.34 % Bi

Tellurium 12.42 % Te

Sulfur 6.24 % S

______

100.00 %

Empirical Formula:

Bi₄TeS₂

IMA Status:

Not Approved IMA

Locality:

Rezbanya, Transylvania, Romania. Link to MinDat.org Location Data.

Name Origin:

Named as a precursor of joseite.

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Protojoseite Crystallography

Axial Ratios:

a:c = 1:13.36101

Cell Dimensions:

a = 4.335, c = 57.92, Z = 6; V = 942.62 Den(Calc)= 10.86

Crystal System:

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

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

By Intensity(I/I_o): 3.15(1), 2.29(0.7), 1.571(0.4),

Physical Properties of Protojoseite

Cleavage:

[???] Perfect

Color:

Gray white.

Density:

8.48 - 8.52, Average = 8.5

Diaphaniety:

Opaque

Luster:

Metallic

Calculated Properties of Protojoseite

Electron Density:

r_electron=8.79 gm/cc
note: r_Protojoseite=10.9 gm/cc.

Fermion Index

Fermion Index = 0.01038
Boson Index = 0.98962

Photoelectric:

PE_Protojoseite=1,664.29 barns/electron
U=PE_Protojoseite x r_electron=14633.08 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Protojoseite is Not Radioactive

Protojoseite Classification

Dana Class:

2.0.0.0 (2)Sulfide Minerals

(2.0)Without Dana Classification Numbers

(Sulfosalt - Te)

Strunz Class:

II/D.10-60 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 Protojoseite Information

References:

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

See Also:

Links to other databases for Protojoseite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas 11 -École des Mines de Paris

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Protojoseite

Bi4TeS2 (?)
Dana No: Unknown Strunz No: II/D.10-60
Locality:

Notes: