Tsnigriite Mineral Data

General Tsnigriite Information

Chemical Formula:

Ag9SbTe3(S,Se)3

Composition:

Molecular Weight = 1,595.01 gm

Silver 60.87 % Ag

Antimony 7.63 % Sb

Tellurium 24.00 % Te

Selenium 2.48 % Se

Sulfur 5.03 % S

______

100.00 %

Empirical Formula:

Ag₉SbTe₃S_2.5Se_0.5

Environment:

Au-Ag deposits.

IMA Status:

Approved IMA 1992

Locality:

Vyskovol'tnoye, Tian Sham, Uzbekistan. Link to MinDat.org Location Data.

Name Origin:

Named from the initials of the Russian name for the Central Scientice-Research Institute of Geological Prospecting in Moscow.

Name Pronunciation:

Tsnigriite + Pronunciation

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Tsnigriite Crystallography

Axial Ratios:

a:b:c =1.0721:1:2.3516

Cell Dimensions:

a = 8.89, b = 8.292, c = 19.5, Z = 4; beta = 97.02° V = 1,426.68 Den(Calc)= 7.43

Crystal System:

MonoclinicSpace Group: P 2/m,Pm

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

By Intensity(I/I_o): 2.2(1), 3.78(0.7), 4.26(0.5),

Physical Properties of Tsnigriite

Color:

Dark gray.

Density:

7.38

Diaphaneity:

Opaque

Habit:

Anhedral Grains - Granular minerals without the expression of crystal shapes

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Hardness:

3.5 - Copper Penny

Luster:

Metallic

Calculated Properties of Tsnigriite

Electron Density:

Bulk Density (Electron Density)=6.40 gm/cc
note: Specific Gravity of Tsnigriite =7.43 gm/cc.

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_Tsnigriite= 274.85 barns/electron
U=PE_Tsnigriite x rElectron Density=1,759.18 barns/cc.

Radioactivity:

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

Tsnigriite Classification

Dana Class:

03.01.12.01 (03)Sulfides - Sulfosalts

(03.01)where z/y > 4 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(03.01.12)Dana Group

03.01.12.01 Tsnigriite Ag9SbTe3(S,Se)3 P 2/m,Pm Mono

Strunz Class:

02.LA.55 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.L - Unclassified Sulfosalts

02.LA -Without essential Pb

02.LA.55 Tsnigriite Ag9SbTe3(S,Se)3 P 2/m,Pm Mono

Other Tsnigriite Information

References:

NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.79,p389,1994)

See Also:

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

Tsnigriite

Ag9SbTe3(S,Se)3
Dana No: 03.01.12.01 Strunz No: 02.LA.55
Locality:

Notes: