Mineralogy Database

Kuranakhite Mineral Data

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General Kuranakhite Information

Help on Chemical  Formula: Chemical Formula: PbMn++++Te++++++O6
Help on Composition: Composition: Molecular Weight = 485.73 gm
   Manganese  11.31 %  Mn   17.90 % MnO2
   Tellurium  26.27 %  Te   32.86 % TeO2
   Lead       42.66 %  Pb   45.95 % PbO
   Oxygen     19.76 %  O
             ______        ______ 
             100.00 %       96.71 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: PbMn4+TeO6
Help on Environment: Environment: In quartz-limonite ores (Supergene Alteration Zone).
Help on IMA Status: IMA Status: Approved IMA 1975
Help on Locality: Locality: Kuranakh gold deposit, southern Yakutia, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Kuranakhite + Pronunciation Say KURANAKHITE

Kuranakhite Image

Click Here for Larger   Image in a New Browser Window Images:
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Comments: Reddish-brown kuranakhite on matrix.
Location: Moctezuma, Mun. de Moctezuma, Sonora, Mexico. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Kuranakhite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.573:1:0.5955
Help on Cell Dimensions: Cell Dimensions: a = 5.1, b = 8.9, c = 5.3, Z = 2; V = 240.57 Den(Calc)= 6.71
Help on Crystal System: Crystal System: Orthorhombic Space Group: Unk
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.4(1), 2.558(0.6), 2.05(0.5),

Physical Properties of Kuranakhite

Help on Color: Color: Brown, Black.
Help on Density: Density: 6.71
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Hardness: Hardness: 4-5 - Fluorite-Apatite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: brown

Optical Properties of Kuranakhite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.263 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.263 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1456,KPDmeas= 0.1456,KC= 0.1977
Ncalc = 2.33
Help on Optical Data: Optical Data: Biaxial (?), a=1.952, g=2.002, bire=0.0500
Help on RL Anisotrophism: RL Anisotrophism: Distinct, blue to brown.
Help on RL Bireflectance: RL Bireflectance: Weak, distinct in oil, with rose tints.
Help on RL Color: RL Color: Light gray with a bluish tine with no internal reflections.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Kuranakhite in Air
λ R  ∑ R(λ) 
 470 nm   24.40   
 546 nm   24.00 
 589 nm   24.50 
 650 nm   23.00 
Calculated Relative Intensity Colors of Kuranakhite in Air
   0%   40%   80% 100% 120% 160% 200% 240% 280% 320% 360% 370%

Calculated Properties of Kuranakhite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.72 gm/cc
note: Specific Gravity of Kuranakhite =6.71 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.11
Boson Index = 0.89
Help on Photoelectric: Photoelectric: PEKuranakhite = 866.16 barns/electron
U=PEKuranakhite x rElectron Density=4,953.62 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Kuranakhite is Not Radioactive

Kuranakhite Classification

Help on  Dana Class: Dana Class: (33)Selenates and Tellurates
  (33.02)as A+ (B++)m XO6 Zq � x(H2O) where x can equal 0
  (33.02.01)Dana Group Kuranakhite PbMnTeO6 Unk Ortho
Help on  Strunz Class: Strunz Class: 04.DM.25 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.D - Metal:Oxygen = 1:2 and similar
  04.DM -With large (� medium-sized) cations; unclassified
04.DM.25 Kuranakhite PbMnTeO6 Unk Ortho

Other Kuranakhite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Kuranakhite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Dana No: Strunz No: 04.DM.25





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