Kudriavite Mineral Data

Kudriavite Mineral Data

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General Kudriavite Information

Chemical Formula:

(Cd,Pb)Bi2S4

Composition:

Molecular Weight = 682.33 gm

Cadmium 12.36 % Cd

Bismuth 61.25 % Bi

Lead 7.59 % Pb

Sulfur 18.80 % S

______

100.00 %

Empirical Formula:

Cd_0.75Pb_0.25Bi₂S₄

IMA Status:

Proposed IMA 2003 (Dana # Added)

Locality:

Kudriavy volcano, Iturup Island, Kuriles Link to MinDat.org Location Data.

Name Origin:

Commission on New Minerals and Mineral Names (CNMMN)

Synonym:

IMA2003-011

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Kudriavite Crystallography

Axial Ratios:

a:b:c =3.2707:1:3.6755

Cell Dimensions:

a = 13.096, b = 4.004, c = 14.717, Z = 4; beta = 115.602° V = 695.94 Den(Calc)= 6.51

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m

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

By Intensity(I/I_o): 2.935(1), 3.689(0.97), 2.804(0.93),3.648(0.84), 3.508(0.81), 2.338(0.43), 3.109(0.38),

Physical Properties of Kudriavite

Color:

Dark reddish gray.

Diaphaniety:

Opaque

Luster:

Metallic

Optical Properties of Kudriavite

RL Anisotrophism:

Strong.

RL Bireflectance:

Distinct.

RL Color:

White, no internal reflections.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Kudriavite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
470 nm	36.40	29.60
546 nm	38.80	32.40
589 nm	38.20	31.80
650 nm	37.70	31.40

**Calculated Relative Intensity Colors of Kudriavite in Air**
Relative Intensity	0%	40%	80%	100%	120%	160%	200%	240%	280%	300%
R₁
R₂

Calculated Properties of Kudriavite

Fermion Index

Fermion Index = 0.04911
Boson Index = 0.95089

Photoelectric:

PE_Kudriavite=1,349.25 barns/electron
U=PE_Kudriavite x r_electron= . barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Kudriavite is Not Radioactive

Kudriavite Classification

Dana Class:

3.8.10.8 (3)Sulfides - Sulfosalts

(3.8)where 1 < z/y <2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(3.8.10)Pavonite Group (Monoclinic: C/2c bismuth sulfosalts)

3.8.10.1 Pavonite (Ag,Cu)(Bi,Pb)3S5 C 2/c 2/m

3.8.10.2 Makovickyite Ag1.5Bi5.5S9 C 2/c 2/m

3.8.10.3 Benjaminite (Ag,Cu)3(Bi,Pb)7S12 C 2/c 2/m

3.8.10.4 Mummeite Ag3CuPbBi6S13orAg2Cu2Pb2Bi6S13 C 2/c 2/m

3.8.10.5 Borodaevite Ag5(Bi,Sb)9S16 C 2/c 2/m

3.8.10.6 Cupropavonite AgPbCu2Bi5S10 C 2/c 2/m

3.8.10.7 Cupromakovickyite! Cu4AgPb2Bi9S18 C 2/m 2/m

3.8.10.8 Kudriavite ! (Cd,Pb)Bi2S4 C 2/m 2/m

Strunz Class:

II/X.00-00 II - Sulfides and sulphosalts

II/X - Unclassified Strunz Sulfides and sulphosalts

II/X.00 - Sulfosalt - Bi

Other Kudriavite Information

See Also:

Links to other databases for Kudriavite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas

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Kudriavite

(Cd,Pb)Bi2S4
Dana No: 3.8.10.8 Strunz No: II/X.00-00
Locality:

Notes: