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Kudriavite Mineral Data
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General Kudriavite Information
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 Chemical Formula: |
(Cd,Pb)Bi2S4 |
| Composition: |
Molecular Weight = 690.39 gm |
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Manganese 0.24 % Mn |
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Cadmium 8.30 % Cd |
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Indium 2.83 % In |
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Iron 0.16 % Fe |
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Bismuth 55.39 % Bi |
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Lead 13.21 % Pb |
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Selenium 2.17 % Se |
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Sulfur 17.70 % S |
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______ |
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100.00 % |
| Empirical Formula: |
Cd0.51Pb0.44Fe2+0.02Mn2+0.03Bi1.83In0.17S3.81Se0.19 |
| 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 |
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Kudriavite Image |
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Images:
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Kudriavite
Comments: Tufts of gray metallic kudriavite crystals on matrix.
Location: Mutnovskyi Volcano, Kamchatka, Russia.
Scale: Sample Size 5x5 mm.
© Diederik Visser |
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Kudriavite Crystallography
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| 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 - Prismatic H-M Symbol (2/m) Space Group: C 2/m |
| 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. |
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Physical Properties of Kudriavite
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| Color: |
Dark reddish gray. |
| Diaphaneity: |
Opaque |
| Habit: |
Platy - Sheet forms (e.g. micas). |
| Luster: |
Metallic |
| Streak: |
black |
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Optical Properties of Kudriavite
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| 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 |
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∑ R1(λ) |
∑ R2(λ) |
| 470 nm |
36.40 |
29.60 |
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| 546 nm |
38.80 |
32.40 |
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| 589 nm |
38.20 |
31.80 |
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| 650 nm |
37.70 |
31.40 |
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Calculated Relative Intensity Colors of Kudriavite in Air
Relative
Intensity |
0% |
40% |
80% |
100% |
120% |
160% |
200% |
240% |
280% |
300% |
| R1 |
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| R2 |
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Calculated Properties of Kudriavite
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| Electron Density: |
Bulk Density (Electron Density)=5.53 gm/cc
note: Specific Gravity of Kudriavite =6.59 gm/cc.
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| Fermion Index: |
Fermion Index = 0.05
Boson Index = 0.95 |
| Photoelectric: |
PEKudriavite =1,340.45 barns/electron
U=PEKudriavite x rElectron Density=7,407.55 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Kudriavite is Not Radioactive |
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Kudriavite Classification
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| Dana Class: |
03.08.10.08 (03)Sulfides - Sulfosalts |
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(03.08)where 1 < z/y <2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals |
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(03.08.10)Pavonite Group (Monoclinic: C/2c bismuth sulfosalts) |
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03.08.10.01 Pavonite (Ag,Cu)(Bi,Pb)3S5 C 2/c 2/m |
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03.08.10.02 Makovickyite Ag1.5Bi5.5S9 C 2/c 2/m |
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03.08.10.03 Benjaminite (Ag,Cu)3(Bi,Pb)7S12 C 2/c 2/m |
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03.08.10.04 Mummeite Cu0.58Ag3.11Pb1.10Bi6.65S13 C 2/c 2/m |
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03.08.10.05 Borodaevite Ag5(Bi,Sb)9S16 C 2/c 2/m |
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03.08.10.06 Cupropavonite AgPbCu2Bi5S10 C 2/c 2/m |
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03.08.10.07 Cupromakovickyite! Cu4AgPb2Bi9S18 C 2/m 2/m |
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03.08.10.08 Kudriavite! (Cd,Pb)Bi2S4 C 2/m 2/m |
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03.08.10.09 IMA2008-058! Ag5Bi13S22 C 2/m 2/m |
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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 |
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02.J - Sulfosalts of PbS Archetype |
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02.JA -Galena derivatives with little or no Pb |
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02.JA.05c Kudriavite! (Cd,Pb)Bi2S4 C 2/m 2/m |
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Other Kudriavite Information
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| 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 - 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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Kudriavite
(Cd,Pb)Bi2S4
Dana No: 03.08.10.08 Strunz No: 02.JA.05c
Locality:
Notes:
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