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Kuranakhite

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Formula:
PbMn4+Te6+O6
Colour:
Pale brown to nearly black
Lustre:
Vitreous
Hardness:
4 - 5
Specific Gravity:
6.72
Crystal System:
Orthorhombic
Name:
After the type locality.
This page provides mineralogical data about Kuranakhite.


Hide all sections | Show all sections

Classification of KuranakhiteHide

Approved
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 ed.:
33.2.1.1
33.2.1.1

33 : SELENATES AND TELLURATES
2 : (AB)m(XO6)·xH2O, where x can equal zero
28.4.15

28 : Selenites, Selenates, Tellurites, and Tellurates
4 : Tellurates

Physical Properties of KuranakhiteHide

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

Optical Data of KuranakhiteHide

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

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 24.5%.

Chemical Properties of KuranakhiteHide

Formula:
PbMn4+Te6+O6

Crystallography of KuranakhiteHide

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 V:
242.22 ų (Calculated from Unit Cell)
Z:
2
Morphology:
As tiny grains to 0.25mm
Comment:
Space group may be C

Type Occurrence of KuranakhiteHide

Place of Conservation of Type Material:
A. E. Fernsman Mineral Museum, Moscow, Russia 76494
Geological Setting of Type Material:
In the oxidation zone of a gold-quartz deposit.

Synonyms of KuranakhiteHide

Other Language Names for KuranakhiteHide

Related Minerals - Nickel-Strunz GroupingHide

4.DM.05Rankamaite(Na,K)3(Ta,Nb,Al)11(O,OH)31Orth. mmm (2/m 2/m 2/m) : Cmmm
4.DM.05Sosedkoite(K,Na)5Al2(Ta,Nb)22O60Orth.
4.DM.15Cesplumtantite(Cs,Na)2(Pb,Sb3+)3Ta8O24Tet.
4.DM.20EyseliteFe3+Ge4+3O7(OH)Orth.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

28.4.1XocomecatliteCu3(TeO4)(OH)4Orth.
28.4.2CarlfriesiteCaTe4+2Te6+O8Mon. 2/m : B2/b
28.4.3YafsoaniteCa3Zn3(TeO6)2Iso. m3 (2/m 3)
28.4.4TlalociteCu10Zn6(Te6+O4)2(Te4+O3)(OH)25Cl · 27H2OOrth.
28.4.5OboyeriteH6(Pb,Ca)6(Te4+O3)3(Te6+O6)2 · 2H2OTric.
28.4.6SchieffelinitePb10Te6+6O20(OH)14(SO4)(H2O)5Orth. mmm (2/m 2/m 2/m) : Cmcm
28.4.7GirditeH2Pb3(Te4+O3)(Te6+O6)Mon. m
28.4.8KhinitePb2+Cu2+3[Te6+O6](OH)2Orth. mm2 : Fdd2
28.4.9Khinite-3TPb2+Cu2+3Te6+O6(OH)2Trig. 3 : P32
28.4.10DugganitePb3Zn3(AsO4)2(TeO6)Trig. 3 2 : P3 2 1
28.4.11KuksitePb3Zn3(PO4)2(TeO6)Trig. 3 2 : P3 2 1
28.4.12CheremnykhitePb3Zn3(VO4)2(TeO6)Orth.
28.4.13TlapalliteH6(Ca,Pb)2(Cu,Zn)3(TeO3)4(TeO6)(SO4)
28.4.14MontaniteBi2(TeO6) · 2H2O
28.4.16CuzticiteFe3+2(TeO6) · 3H2OHex.
28.4.17YecoraiteFe3+3Bi5(Te6+O4)2(Te4+O3)O9 · 9H2O

Other InformationHide

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

References for KuranakhiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
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 KuranakhiteHide

Localities for KuranakhiteHide

This 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.

Locality ListHide

(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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 (TL)
 
  • 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.
      • Silver Lake District
        • Soda Mts
          • 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.
Collected by and in the collection of Bob Housley. EDS analyzed.
    • Tuolumne Co.
      • Mother Lode Belt
        • Coulterville District
          • Peñon Blanco Peak
Mike Scott S106030 from Cureton.
  • Utah
    • Utah Co.
      • East Tintic Mts
        • East Tintic District
XRD analzyed by Dr. Rob Bowell.
Mineral and/or Locality  
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