Kudriavite Mineral Data

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General Kudriavite Information

Chemical Formula:

(Cd,Pb)Bi2S4

Composition:

Molecular Weight = 690.39 gm

Manganese 0.24 % Mn

Cadmium 8.30 % Cd

Indium 2.83 % In

Iron 0.16 % Fe

Bismuth 55.39 % Bi

Lead 13.21 % Pb

Selenium 2.17 % Se

Sulfur 17.70 % S

______

100.00 %

Empirical Formula:

Cd_0.51Pb_0.44Fe²⁺_0.02Mn²⁺_0.03Bi_1.83In_0.17S_3.81Se_0.19

Environment:

High-temperature (about 400 °C) fumarole encrustations

IMA Status:

Approved IMA 2003 (Dana # Added)

Locality:

Kudriavy volcano, Iturup Island, Kurile arc, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Synonym:

IMA2003-011

Kudriavite Image

Images:

Kudriavite

Comments: Tufts of gray metallic kudriavite crystals on matrix.
Location: Mutnovskyi Volcano, Kamchatka, Russia. Scale: Sample Size 5x5 mm.
© Diederik Visser

Kudriavite Crystallography

Axial Ratios:

a:b:c =3.2711:1:3.6748

Cell Dimensions:

a = 13.095, b = 4.0032, c = 14.711, Z = 4; beta = 115.602° V = 695.46 Den(Calc)= 6.59

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): 2.807(1)(310 ), 3.69(0.97)(202 ), 3.64(0.95)(204), 3.508(0.83)(112), 2.935(0.83)(311), 1.907(0.4)(511 ), 2.002(0.39)(020 ), 2.341(0.39)(114 ), 3.111(0.

Crystal Structure:

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Balic-Zunic T , Makovicky E , The Canadian Mineralogist , 45 (2007) p.437-443, The crystal structure of kudriavite, (Cd,Pb)Bi2S4

Physical Properties of Kudriavite

Color:

Dark reddish gray.

Diaphaneity:

Opaque

Habit:

Platy - Sheet forms (e.g. micas).

Luster:

Metallic

Streak:

black

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

Electron Density:

Bulk Density (Electron Density)=5.53 gm/cc
note: Specific Gravity of Kudriavite =6.59 gm/cc.

Fermion Index:

Fermion Index = 0.05
Boson Index = 0.95

Photoelectric:

PE_Kudriavite=1,340.45 barns/electron
U=PE_Kudriavite x rElectron Density=7,407.55 barns/cc.

Radioactivity:

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

Kudriavite Classification

Dana Class:

03.08.10.08 (03)Sulfides - Sulfosalts

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

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

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

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

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

03.08.10.04 Mummeite Cu0.58Ag3.11Pb1.10Bi6.65S13 C 2/c 2/m

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

03.08.10.06 Cupropavonite AgPbCu2Bi5S10 C 2/c 2/m

03.08.10.07 Cupromakovickyite! Cu4AgPb2Bi9S18 C 2/m 2/m

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

03.08.10.09 IMA2008-058! Ag5Bi13S22 C 2/m 2/m

03.08.10.10 IMA2005-036! Cu8Pb4Ag3Bi19S38 C 2/m 2/m

Strunz Class:

02.JA.05c 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.05c Kudriavite! (Cd,Pb)Bi2S4 C 2/m 2/m

Other Kudriavite Information

References:

NAME( AmMin, v 90, p 1946) PHYS. PROP.(AmMin, v90:1946, v93:255) OPTIC PROP.(AmMin, v 90, p 1946)

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
10 - Ruff.Info

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Kudriavite

(Cd,Pb)Bi2S4
Dana No: 03.08.10.08 Strunz No: 02.JA.05c
Locality:

Notes: