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Kuranakhite

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Formula:
PbMn
4+
 
Te
6+
 
O
 
6
System:OrthorhombicColour:Pale brown to nearly ...
Hardness:4 - 5
Name:After the type locality.
This page provides mineralogical data about Kuranakhite.

Classification of Kuranakhite

IMA status:Approved
Strunz 8th edition ID:4/D.15-50
Nickel-Strunz 10th (pending) edition ID:4.DM.25

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
M : With large (+- medium-sized) cations; unclassified
Dana 7th edition ID:33.2.1.1
Dana 8th edition ID:33.2.1.1

33 : SELENATES AND TELLURATES
2 : (AB)m(XO6)·xH2O, where x can equal zero
Hey's CIM Ref.:28.4.15

28 : Selenites, Selenates, Tellurites, and Tellurates
4 : Tellurates
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Type Occurrence of Kuranakhite

Type Locality:Kuranakh Au Deposit, Aldan, Aldan Shield, Sakha Republic (Saha Republic; Yakutia), Eastern-Siberian Region, Russia
Place of Conservation of Type Material:A. E. Fernsman Mineral Museum, Moscow, Russia 76494
Year of Discovery:1975
Geological Setting of type material:In the oxidation zone of a gold-quartz deposit.

Occurrences of Kuranakhite

Geological Setting:Gold quartz deposits

Physical Properties of Kuranakhite

Lustre:Vitreous
Diaphaneity (Transparency):Translucent
Colour:Pale brown to nearly black
Streak:Brown
Hardness (Mohs):4 - 5
Hardness (Vickers):VHN100=228 - 441
Tenacity:Brittle
Density (measured):6.72(2) g/cm3
Density (calculated):6.66 g/cm3

Crystallography of Kuranakhite

Crystal System:Orthorhombic
Cell Parameters:a = 5.11(1) Å, b = 8.91(1) Å, c = 5.32(1) Å
Ratio:a:b:c = 0.574 : 1 : 0.597
Unit Cell Volume:V 242.22 ų (Calculated from Unit Cell)
Z:2
Morphology:As tiny grains to 0.25mm
Comment:Space group may be C

Optical Data of Kuranakhite

Type:Biaxial (+/-)
RI values: nα = 1.952 - 1.960 nβ = 1.980 nγ = 2.002 - 2.010
Birefringence:Weak; in rose tints.
Maximum Birefringence:δ = 0.050

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Type:Anisotropic
Anisotropism:Distinct, bright blue to brown
Reflectivity:
460nmR=24.4%
540nmR=24.0%
580nmR=24.5%
660nmR=23.0%


Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 24.5%.

Chemical Properties of Kuranakhite

Formula:
PbMn
4+
 
Te
6+
 
O
 
6
Simplified for copy/paste:PbMn4+Te6+O6
Essential elements:Mn, O, Pb, Te
All elements listed in formula:Mn, O, Pb, Te
Empirical Formula:
PbMn
4+
 
Te
6+
 
O
 
6

Relationship of Kuranakhite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.DM.05Rankamaite
(Na,K)
 
3
(Ta,Nb,Al)
 
11
(O,OH)
 
31
4.DM.05Sosedkoite
(K,Na)
 
5
Al
 
2
(Ta,Nb)
 
22
O
 
60
4.DM.15Cesplumtantite
(Cs,Na)
 
2
(Pb,Sb
3+
 
)
 
3
Ta
 
8
O
 
24
4.DM.20Eyselite
Fe
3+
 
Ge
4+
3
O
 
7
(OH)
Related Minerals - Hey's Index Grouping:

- +
28.4.1Xocomecatlite
Cu
 
3
(TeO
 
4
)(OH)
 
4
28.4.2Carlfriesite
CaTe
4+
2
Te
6+
 
O
 
8
28.4.3Yafsoanite
Ca
 
3
Zn
 
3
(TeO
 
6
)
 
2
28.4.4Tlalocite
Cu
 
10
Zn
 
6
(Te
6+
 
O
 
4
)
 
2
(Te
4+
 
O
 
3
)(OH)
 
25
Cl · 27H
 
2
O
28.4.5Oboyerite
H
 
6
(Pb,Ca)
 
6
(Te
4+
 
O
 
3
)
 
3
(Te
6+
 
O
 
6
)
 
2
· 2H
 
2
O
28.4.6Schieffelinite
Pb
 
8
(TeO
 
4
)
 
5
(SO
 
4
)
 
3
· 8H
 
2
O
28.4.7Girdite
H
 
2
Pb
 
3
(Te
4+
 
O
 
3
)(Te
6+
 
O
 
6
)
28.4.8Khinite
Pb
2+
 
Cu
2+
3
Te
6+
 
O
 
6
(OH)
 
2
28.4.9Parakhinite
Pb
2+
 
Cu
2+
3
Te
6+
 
O
 
6
(OH)
 
2
28.4.10Dugganite
Pb
 
3
Zn
 
3
(AsO
 
4
)
 
2
(TeO
 
6
)
28.4.11Kuksite
Pb
 
3
Zn
 
3
(PO
 
4
)
 
2
(TeO
 
6
)
28.4.12Cheremnykhite
Pb
 
3
Zn
 
3
(VO
 
4
)
 
2
(TeO
 
6
)
28.4.13Tlapallite
H
 
6
(Ca,Pb)
 
2
(Cu,Zn)
 
3
(TeO
 
3
)
 
4
(TeO
 
6
)(SO
 
4
)
28.4.14Montanite
Bi
 
2
(TeO
 
6
) · 2H
 
2
O
28.4.16Cuzticite
Fe
3+
2
(TeO
 
6
) · 3H
 
2
O
28.4.17Yecoraite
Fe
3+
3
Bi
 
5
(Te
6+
 
O
 
4
)
 
2
(Te
4+
 
O
 
3
)O
 
9
· 9H
 
2
O

Other Names for Kuranakhite

Synonyms:
IMA1974-030
Other Languages:
German:Kuranakhit
Spanish:Kuranakhita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Kuranakhite

Reference List:

- +
American Mineralogist(1976): 61: 339.

Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 104: 310-313.

Xinchun Zhou, Liang Liu, Shizhong Wang, Jianmin Hu, Jincai Yan, and Jiankun Yang (1997): Kuranakhite discovered in China for the first time. Acta Mineralogica Sinica 17(2), 115-119

Internet Links for Kuranakhite

Search Engines:
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  • External Links:
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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Kuranakhite details from Handbook of Mineralogy (PDF)
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  • Localities for Kuranakhite

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Canada
     
    • Ontario
      • Timiskaming District
        • Bannockburn Township
    Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols
    China
     
    • Shaanxi Province
      • Shangluo Prefecture
        • Luonan Co.
    Xinchun Zhou, Liang Liu, Shizhong Wang, Jianmin Hu, Jincai Yan, and Jiankun Yang (1997): Acta Mineralogica Sinica 17(2), 115-119
    Mexico
     
    • Sonora
      • Mun. de Moctezuma
    Panczner(1987):108-336.
    Russia
     
    • Eastern-Siberian Region
      • Sakha Republic (Saha Republic; Yakutia)
        • Aldan Shield
          • Aldan
    Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    Mills, S. J., Kampf, A. R., Kolitsch, U., Housley, R. M. & Raudsepp, M. (2010) The crystal chemistry and crystal structure of kuksite, Pb3Zn3Te6+P2O14, and a note on the crystal structure of yafsoanite, (Ca,Pb)3Zn(TeO6)2. American Mineralogist, 95(7), 933–938.
    USA
     
    • California
      • San Bernardino Co.
        • Baker
    Joe Marty, Anthony Kampf, Robert Housley, Stuart Mills, Stefan Weiss (2010) Seltene neue Tellurmineralien aus Kalifornien, Utah, Arizona und New Mexico (USA). Lapis, 35, #12, 42-51.
      • Tuolumne Co.
        • Mother Lode Belt
          • Coulterville District
            • Peñon Blanco Peak
    Mike Scott S106030 from Cureton.
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