Kurilite Mineral Data

Kurilite Mineral Data

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General Kurilite Information

Chemical Formula:

(Ag,Au)2(Te,Se,S)

Composition:

Molecular Weight = 363.74 gm

Silver 44.48 % Ag

Tellurium 21.05 % Te

Gold 27.08 % Au

Selenium 6.51 % Se

Sulfur 0.88 % S

______

100.00 %

Empirical Formula:

Ag_1.5Au_0.5Te_0.6Se_0.3S_0.1

Environment:

Inadequately described species.

IMA Status:

Not Approved IMA

Locality:

Kurile-Kamtchatka volcanic belt, Siberia, Russia Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

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Kurilite Crystallography

Cell Dimensions:

a = 11.27, Z = 1; V = 1,431.44 Den(Calc)= 0.42

Crystal System:

IsometricSpace Group: P m3n,P 4₃n

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

By Intensity(I/I_o): 3(0.9), 2.427(0.5), 2.52(0.5),

Physical Properties of Kurilite

Cleavage:

None

Color:

Gray, Steel gray.

Diaphaniety:

Opaque

Luster:

Metallic

Optical Properties of Kurilite

Optical Data:

NCalc= 1.07 - from Gladstone-Dale relationship (KC = 0.176) where Ncalc=Dcalc*KC+1

Calculated Properties of Kurilite

Electron Density:

r_electron=0.35 gm/cc
note: r_Kurilite=0.42 gm/cc.

Fermion Index

Fermion Index = 0.02183
Boson Index = 0.97817

Photoelectric:

PE_Kurilite= 640.56 barns/electron
U=PE_Kurilite x r_electron= 226.33 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Kurilite is Not Radioactive

Kurilite Classification

Dana Class:

2.0.0.0 (2)Sulfide Minerals

(2.0)Without Dana Classification Numbers

(Telluride, S)

Strunz Class:

II/B.05-35 II - Sulfides and sulphosalts

II/B - Sulfides with metal: sulfur, selenium and tellurium > 1:1, Sulfides, Selenides and Tellurides with predominant Copper and Silver/Gold

II/B.05 - Achantite - Empresite series

II/B.05-02 Argentite* Ag2S I m3m 4/m 3 2/m

II/B.05-10 Acanthite Ag2S P 2₁/n 2/m

II/B.05-30 Naumannite Ag2Se P 2₁2₁2₁ 2 2 2

II/B.05-35 Kurilite (Ag,Au)2(Te,Se,S) P m3n,P 4₃n Cubic

II/B.05-40 Hessite Ag2Te P 2₁/c 2/m

II/B.05-50 Aguilarite Ag4SeS P 2₁2₁2₁ 2 2 2

II/B.05-60 Cervelleite Ag4TeS Unk Cubic

II/B.05-70 Benleonardite Ag8(Sb,As)Te2S3 Tetra Tetra

II/B.05-75 Tsnigriite Ag9SbTe3(S,Se)3 P 2/m,Pm Mono

II/B.05-80 Stutzite Ag5-xTe3,(x=0.24-0.36) P 6/mmm 6/m 2/m 2/m

II/B.05-90 Empressite AgTe Pmnb 2/m 2/m 2/m

Other Kurilite Information

References:

PHYS. PROP.(Am.Min.,Vol.77,p208,1992)

See Also:

Links to other databases for Kurilite :
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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Print or Cut-and-Paste your Kurilite Specimen Label here :

Kurilite

(Ag,Au)2(Te,Se,S)
Dana No: Unknown Strunz No: II/B.05-35
Locality:

Notes: