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Kuranakhite

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About KuranakhiteHide

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.


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

Geological EnvironmentHide

Geological Setting:
Gold quartz deposits

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.
28.4.5OboyeriteTric.
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.
28.4.13Tlapallite(Ca,Pb)3CaCu6[Te4+3Te6+O12]2(Te4+O3)2(SO4)2·3H2OTrig. 3 2 : P3 2 1
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

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Canada
 
  • Ontario
    • Timiskaming District
      • Bannockburn Township
Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols; D. C. Harris, W. D. Sinclair, and R. I. Thorpe (1983) Telluride minerals from the Ashley Deposit, Bannockburn Township, Ontario. Can Mineral 21: 137-143
China
 
  • Shaanxi
    • Shangluo
      • Luonan County
Xinchun Zhou, Liang Liu, Shizhong Wang, Jianmin Hu, Jincai Yan, and Jiankun Yang (1997): Acta Mineralogica Sinica 17(2), 115-119
Mexico
 
  • Sonora
    • Moctezuma Municipality
Panczner(1987):108-336.
Russia (TL)
 
  • Sakha Republic (Yakutia)
    • 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 Mining District
        • Soda Mountains
          • 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.; Kampf, A. R., Mills, S. J., & Housley, R. M. (2010). The crystal structure of munakataite, Pb2Cu2 (Se4+ O3)(SO4)(OH) 4, from Otto Mountain, San Bernardino County, California, USA. Mineralogical Magazine, 74(6), 991-998.
Collected by and in the collection of Bob Housley. EDS analyzed.
    • Tuolumne Co.
      • Mother Lode Belt
        • Coulterville Mining District
          • Peñon Blanco Peak
Mike Scott S106030 from Cureton.
  • Utah
    • Utah Co.
XRD analyzed by Dr. Rob Bowell.
 
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