Nabokoite Mineral Data + Say NABOKOITE


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General Nabokoite Information

Help on Chemical  Formula: Chemical Formula: Cu++7Te++++O4(SO4)5·KCl
Help on Composition: Composition: Molecular Weight = 1,191.29 gm
   Potassium   3.28 %  K     3.95 % K2O
   Copper     37.34 %  Cu   46.74 % CuO
   Tellurium  10.71 %  Te   13.40 % TeO2
   Sulfur     13.46 %  S    33.60 % SO3
   Chlorine    2.98 %  Cl    2.98 % Cl
                -   %  Cl   -0.67 % -O=Cl2
   Oxygen     32.23 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cu7TeO4(SO4)5KCl
Help on Environment: Environment: Sublimate on porous basalt near a fumarole. Needs further study.
Help on IMA Status: IMA Status: Approved IMA 1987
Help on Locality: Locality: Great Clefted Tolbachik eruption, Kamchatka, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Sof'ya I. Naboko (1901-), Russian volcanologist.
Help on Synonym: Synonym: ICSD 68186
  PDF 42-1337
 

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Nabokoite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:2.08536
Help on Cell Dimensions: Cell Dimensions: a = 9.84, c = 20.52, Z = 4; V = 1,986.86 Den(Calc)= 3.98
Help on Crystal System: Crystal System: Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: P 4/ncc
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 10.35(1), 2.439(0.7), 3.421(0.6),
Click Here for Large Nabokoite Structure Window Crystal Structure:

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Pertlik F , Zemann J , Mineralogy and Petrology , 38 (1988) p.291-298, The crystal structure of nabokoite, Cu7TeO4(SO4)5*KCl:, The first example of a Te(IV)O4 pyramid with exactly tetragonal symmetry, Locality: Mount Tolbachik, Kamchatka, USSR

 

Physical Properties of Nabokoite

Help on Cleavage: Cleavage: [001] Perfect
Help on Color: Color: Yellow, Yellow brown.
Help on Density: Density: 4.18
Help on Diaphaniety: Diaphaniety: Transparent
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 2-2.5 - Gypsum-Finger Nail
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: yellowish brown
 

Optical Properties of Nabokoite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.014 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.065 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1948,KPDmeas= 0.1855,KC= 0.183
Help on Optical Data: Optical Data: Uniaxial (-), e=1.773, w=1.778, bire=0.0050.
 

Calculated Properties of Nabokoite

Help on Electron Density: Electron Density:

relectron=3.95 gm/cc
note: rNabokoite =4.18 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.00972
Boson Index = 0.99028
Help on Photoelectric: Photoelectric:

PENabokoite = 52.80 barns/electron
U=PENabokoite x relectron= 208.60 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 44.74 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Nabokoite - barely detectable

 

Nabokoite Classification

Help on  Dana Class: Dana Class: 30.1.17.1 (30)Anhydrous Sulfates Containing Hydroxyl or Halogen
  (30.1)where (A B)m (XO4)p Zq where m:p>2:1
  (30.1.17)Dana Group
 
30.1.17.1 Nabokoite Cu7TeO4(SO4)5·KCl P 4/ncc 4/m 2/m 2/m
 
30.1.17.2 Atlasovite Cu6FeBiO4(SO4)5·KCl P 4/ncc 4/m 2/m 2/m
Help on  Strunz Class: Strunz Class: VI/B.07-10 VI - Sulfates,Chromates,Molybdates and Tungstates
  VI/B - Waterfree sulfates [SO4]2- with unfamiliar anions. cations of medium size
  VI/B.07 - Nabokoite - Atlasovite series
 
VI/B.07-10 Nabokoite Cu7TeO4(SO4)5·KCl P 4/ncc 4/m 2/m 2/m
 
VI/B.07-20 Atlasovite Cu6FeBiO4(SO4)5·KCl P 4/ncc 4/m 2/m 2/m
 

Other Nabokoite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.73,p929,1988) OPTIC PROP.(Am.Min.,Vol.73,p929,1988)
Help on See Also: See Also: Links to other databases for Nabokoite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris

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Print or Cut-and-Paste your Nabokoite Specimen Label here :

Nabokoite

Cu++7Te++++O4(SO4)5·KCl
Dana No: 30.1.17.1 Strunz No: VI/B.07-10
Locality:

 

Notes:

 

 
   
 
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