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Tazieffite Mineral Data
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General Tazieffite Information
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 Chemical Formula: |
Pb20Cd2(As,Bi)22S50Cl10 |
| Composition: |
Molecular Weight = 8,377.10 gm |
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Cadmium 2.68 % Cd |
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Bismuth 7.48 % Bi |
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Arsenic 16.99 % As |
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Lead 49.47 % Pb |
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Sulfur 19.14 % S |
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Chlorine 4.23 % Cl |
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______ |
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100.00 % |
| Empirical Formula: |
Pb20Cd2As19Bi3S50Cl10 |
| Environment: |
Zinkenite plesiotypic series |
| IMA Status: |
Proposed IMA 2008 (Dana # Added) |
| Locality: |
Mutnovsky volcano, Kamchatka Peninsula, Far East Asia, Russia Link to MinDat.org Location Data. |
| Name Origin: |
Named for Haroun Tazieff (1914-1998), volcanologist who was a pioneer in field observation of active volcanoes. |
| Synonym: |
IMA2008-012 |
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Tazieffite Image |
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Images:
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Tazieffite
Comments: Tiny acicular, metallic tazieffite crystals free-standing on matrix formed by volcanic sublimation.
Location: Mutnovsky Volcano, Kamchatka, Russia.
Scale: Specimen size 0.8 x 0.5 x 0.5 cm.
© Tom Loomis / Dakota Matrix |
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Tazieffite Crystallography
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| Axial Ratios: |
a:b:c =0.1831:1:0.5979 |
| Cell Dimensions: |
a = 8.352, b = 45.592, c = 27.261, Z = 4; beta = 98.84° V = 10,257.26 Den(Calc)= 5.42 |
| Crystal System: |
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/c |
| X Ray Diffraction: |
By Intensity(I/Io): 3.313(1), 3.361(0.65), 3.8(0.53),2.835(0.39), 4.07(0.39), 2.789(0.36), 3.66(0.24), 4.35(0.21), |
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Physical Properties of Tazieffite
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| Diaphaneity: |
Opaque |
| Luster: |
Metallic |
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Calculated Properties of Tazieffite
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| Electron Density: |
Bulk Density (Electron Density)=4.64 gm/cc
note: Specific Gravity of Tazieffite =5.42 gm/cc.
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| Fermion Index: |
Fermion Index = 0.11
Boson Index = 0.89 |
| Photoelectric: |
PETazieffite =1,050.68 barns/electron
U=PETazieffite x rElectron Density=4,870.04 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Tazieffite is Not Radioactive |
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Tazieffite Classification
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| Dana Class: |
03.08.01.04 (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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(03.08.01)Zinkenite Group |
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03.08.01.01 Zinkenite Pb9Sb22S42 P 63 6 |
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03.08.01.02 Pillaite! Pb9Sb10S23ClO0.5 C 2/m 2/m |
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03.08.01.03 Pellouxite! (Cu,Ag)Pb10Sb12S27(Cl,S)0.6O C 2/m 2/m |
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03.08.01.04 Tazieffite! Pb20Cd2(As,Bi)22S50Cl10 C 2/c 2/m |
| Strunz Class: |
02.XX.00 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.X - Unclassified Strunz SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarse |
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02.XX -Unknown |
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02.XX.00 Isochalcopyrite? Cu8Fe9S16 Unk Cubic |
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02.XX.00 Bayankhanite? Cu6HgS4 Unk Hex |
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02.XX.00 Bravoite? (Fe,Ni,Co)S2 P a3 2/m 3 |
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02.XX.00 Dzhezkazganite* (Pb,Cu,Rh)S2(?) P a3? 2/m 3 |
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02.XX.00 Dilithium* Li2Te P 222 2 2 2 |
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02.XX.00 Horobetsuite* (Bi,Sb)2S3 Pbnm 2/m 2/m 2/m |
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02.XX.00 Horsfordite? Cu5Sb Unk Cubic |
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02.XX.00 Kurilite? (Ag,Au)2(Te,Se,S) P m3n,P 43n Cubic |
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02.XX.00 Imgreite? NiTe P 63/mmc 6/m 2/m 2/m |
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02.XX.00 Matraite? ZnS R 3m 3m |
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02.XX.00 Iridisite* (Ir,Cu,Rh,Ni,Pt)S2 Unk Cubic |
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02.XX.00 Kitaibelite? Ag10PbBi30S51 Mono ? Mono |
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02.XX.00 Jeromite? As(S,Se)2 None |
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02.XX.00 Parajamesonite? Pb4FeSb6S14 Unk Ortho |
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02.XX.00 Volfsonite* Cu10CuFeFe2Sn3S16 P 42m-,P 4212 Tetra |
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02.XX.00 Prassoite Rh17S15(?) P m3m 4/m 3 2/m |
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02.XX.00 Sakharovaite? (Pb,Fe)(Bi,Sb)2S4 Mono |
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02.XX.00 Samaniite Cu2Fe5Ni2S8 P 41/mmm 4mm |
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02.XX.00 Tazieffite! Pb20Cd2(As,Bi)22S50Cl10 C 2/c 2/m |
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02.XX.00 Horomanite Fe6Ni3S8 P 4/mmm 4mm |
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Other Tazieffite Information
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| See Also: |
Links to other databases for Tazieffite :
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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Tazieffite
Pb20Cd2(As,Bi)22S50Cl10
Dana No: 03.08.01.04 Strunz No: 02.XX.00
Locality:
Notes:
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