Mineralogy Database

Kudriavite Mineral Data

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General Kudriavite Information

Help on Chemical  Formula: Chemical Formula: (Cd,Pb)Bi2S4
Help on Composition: 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 % 
Help on Empirical Formula: Empirical Formula: Cd0.51Pb0.44Fe2+0.02Mn2+0.03Bi1.83In0.17S3.81Se0.19
Help on Environment: Environment: High-temperature (about 400 °C) fumarole encrustations
Help on IMA Status: IMA Status: Approved IMA 2003 (Dana # Added)
Help on Locality: Locality: Kudriavy volcano, Iturup Island, Kurile arc, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Synonym: Synonym: IMA2003-011

Kudriavite Image

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

Kudriavite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =3.2711:1:3.6748
Help on Cell Dimensions: Cell Dimensions: a = 13.095, b = 4.0032, c = 14.711, Z = 4; beta = 115.602° V = 695.46 Den(Calc)= 6.59
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 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.

Physical Properties of Kudriavite

Help on Color: Color: Dark reddish gray.
Help on Diaphaneity: Diaphaneity: Opaque
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Luster: Luster: Metallic
Help on Streak: Streak: black

Optical Properties of Kudriavite

Help on RL Anisotrophism: RL Anisotrophism: Strong.
Help on RL Bireflectance: RL Bireflectance: Distinct.
Help on RL Color: RL Color: White, no internal reflections.
Help on Reflectivity 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
   0%   40%   80% 100% 120% 160% 200% 240% 280% 300%

Calculated Properties of Kudriavite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.53 gm/cc
note: Specific Gravity of Kudriavite =6.59 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.05
Boson Index = 0.95
Help on Photoelectric: Photoelectric: PEKudriavite =1,340.45 barns/electron
U=PEKudriavite x rElectron Density=7,407.55 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Kudriavite is Not Radioactive

Kudriavite Classification

Help on  Dana Class: Dana Class: (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) Pavonite (Ag,Cu)(Bi,Pb)3S5 C 2/c 2/m Makovickyite Ag1.5Bi5.5S9 C 2/c 2/m Benjaminite (Ag,Cu)3(Bi,Pb)7S12 C 2/c 2/m Mummeite Cu0.58Ag3.11Pb1.10Bi6.65S13 C 2/c 2/m Borodaevite Ag5(Bi,Sb)9S16 C 2/c 2/m Cupropavonite AgPbCu2Bi5S10 C 2/c 2/m Cupromakovickyite! Cu4AgPb2Bi9S18 C 2/m 2/m Kudriavite! (Cd,Pb)Bi2S4 C 2/m 2/m IMA2008-058! Ag5Bi13S22 C 2/m 2/m IMA2005-036! Cu8Pb4Ag3Bi19S38 C 2/m 2/m
Help on  Strunz Class: 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

Help on References: References: NAME( AmMin, v 90, p 1946) PHYS. PROP.(AmMin, v90:1946, v93:255) OPTIC PROP.(AmMin, v 90, p 1946)
Help on See Also: See Also: Links to other databases for Kudriavite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Dana No: Strunz No: 02.JA.05c





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