Volynskite Mineral Data

General Volynskite Information

Chemical Formula:

AgBiTe2

Composition:

Molecular Weight = 572.05 gm

Silver 18.86 % Ag

Bismuth 36.53 % Bi

Tellurium 44.61 % Te

______

100.00 %

Empirical Formula:

AgBiTe₂

Environment:

As complex intergrowths with other tellurides in gold ores.

IMA Status:

Approved IMA 1965

Locality:

Armenia, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for I. S. Volynskii (1900-1947), Polish economic geologist.

Name Pronunciation:

Volynskite + Pronunciation

Synonym:

ICSD 43266

PDF 18-1173

Volynskite Image

Images:

Volynskite Tsumoite

Comments: BSE image of composite grain of volynskite (AgBiTe) and tsumoite (BiTe) associated with sphalerite in chalcopyrite.
Location: Stobie deposit, South Range breccia belt, Supergiant Ni-Cu-PGE Sudbury District, Ontario, Canada. Scale: See Image.
© National Resouces of Canada

Volynskite Crystallography

Axial Ratios:

a:c = 1:4.64525

Cell Dimensions:

a = 4.468, c = 20.755, Z = 3; V = 358.82 Den(Calc)= 7.94

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): 3.09(1), 2.21(0.5), 2.33(0.3),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Bayliss P , American Mineralogist , 76 (1991) p.257-265, Crystal chemistry and crystallography of some minerals in the tetradymite group

Physical Properties of Volynskite

Cleavage:

{???} Perfect, {???} Imperfect, {???} Imperfect

Color:

Lead gray.

Density:

8.01

Diaphaneity:

Opaque

Fracture:

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

Hardness:

2.5-3 - Finger Nail-Calcite

Luster:

Metallic

Optical Properties of Volynskite

RL Anisotrophism:

Very weak, pale pink to gray.

RL Color:

Pale purplish.

RL Pleochroism:

Very slight in oil.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Volynskite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	56.40	58.10
420 nm	56.00	57.70
440 nm	55.60	57.30
460 nm	55.20	56.90
480 nm	54.60	56.30
500 nm	53.80	55.50
520 nm	53.20	54.90
540 nm	53.00	54.60
560 nm	53.40	54.70
580 nm	54.00	54.90
600 nm	54.60	55.10
620 nm	55.00	55.50
640 nm	55.30	55.60
660 nm	55.30	55.80
680 nm	55.30	55.80
700 nm	55.40	55.80

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

Calculated Properties of Volynskite

Electron Density:

Bulk Density (Electron Density)=6.50 gm/cc
note: Specific Gravity of Volynskite =7.94 gm/cc.

Fermion Index:

Fermion Index = 0.03
Boson Index = 0.97

Photoelectric:

PE_Volynskite= 938.37 barns/electron
U=PE_Volynskite x rElectron Density=6,095.48 barns/cc.

Radioactivity:

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

Volynskite Classification

Dana Class:

03.07.01.03 (03)Sulfides - Sulfosalts

(03.07)where z/y = 2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(03.07.01)Matildite Group

03.07.01.01 Matildite AgBiS2 P 3m1 3 2/m

03.07.01.02 Bohdanowiczite AgBiSe2 P 3m1 3 2/m

03.07.01.03 Volynskite AgBiTe2 P 3m1 3 2/m

03.07.01.04 Zlatogorite! CuNiSb2 P 3m1 3 2/m

Strunz Class:

02.JA.20 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.J - Sulfosalts of PbS Archetype

02.JA -Galena derivatives with little or no Pb

02.JA.20 Bohdanowiczite AgBiSe2 P 3m1 3 2/m

02.JA.20 Matildite AgBiS2 P 3m1 3 2/m

02.JA.20 Volynskite AgBiTe2 P 3m1 3 2/m

Other Volynskite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Volynskite :
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
15 - WWW-MINCRYST

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Ask about Volynskite here :
Ask-A-Mineralogist from the Mineralogical Society of America
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Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Volynskite Specimen Label here :

Volynskite

AgBiTe2
Dana No: 03.07.01.03 Strunz No: 02.JA.20
Locality:

Notes: