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Kuzmenkoite-Zn Mineral Data

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General Kuzmenkoite-Zn Information

Help on Chemical  Formula: Chemical Formula: K2Zn(Ti,Nb)4(Si4O12)2(OH,O)4•6-8(H2O)
Help on Composition: Composition: Molecular Weight = 1,214.76 gm
   Potassium   4.76 %  K     5.74 % K2O
   Barium      1.81 %  Ba    2.02 % BaO
   Sodium      0.36 %  Na    0.48 % Na2O
   Strontium   0.14 %  Sr    0.17 % SrO
   Calcium     1.58 %  Ca    2.22 % CaO
   Magnesium   0.02 %  Mg    0.03 % MgO
   Titanium   10.68 %  Ti   17.82 % TiO2
   Manganese   1.63 %  Mn    2.10 % MnO
   Niobium     8.87 %  Nb   12.69 % Nb2O5
   Aluminum    0.04 %  Al    0.08 % Al2O3
   Zinc        3.01 %  Zn    3.75 % ZnO
   Iron        0.41 %  Fe    0.53 % FeO
   Silicon    18.22 %  Si   38.98 % SiO2
   Hydrogen    1.56 %  H    13.93 % H2O
   Oxygen     46.89 %  O
             ______        ______ 
             100.00 %      100.55 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K1.48Ca0.48Na0.19Ba0.16Sr0.02Zn0.56Mn2+0.36Fe2+0.09Mg0.01Ti2.71Nb1.162(Si3.94)2(Al0.01) 2(O11.85)(OH)2.19O1.41�8.3(H2O)
Help on Environment: Environment: Hydrothermal product in 3 pegmatites. May form pseudomorphs after murmanite. (labuntosovite group; structure)
Help on IMA Status: IMA Status: Approved IMA 2002 (Dana # Added)
Help on Locality: Locality: Mount Kedydverpakhk and Mount Krrnasurt, Lovozero massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the Russian geochemist and mineralogist Maria V. Kuz'menko (1918-1995) and the Zn content.
Help on Synonym: Synonym: IMA2001-037
 

Kuzmenkoite-Zn Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.0396:1:0.5617
Help on Cell Dimensions: Cell Dimensions: a = 14.4, b = 13.851, c = 7.781, Z = 2; beta = 117.33° V = 1,378.72 Den(Calc)= 2.93
Help on Crystal System: Crystal System: Monoclinic - Domatic H-M Symbol (m) Space Group: Cm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.19(1)(400,421,402), 3.09(0.91)(041,022), 6.92(0.75)(020,001), 6.4(0.5)(201,200), 2.49(0.35)(441,403), 2.58(0.35)(241),
 

Physical Properties of Kuzmenkoite-Zn

Help on Cleavage: Cleavage: None
Help on Color: Color: Colorless, White, Grayish white, Pale pink, Light brown.
Help on Density: Density: 2.78 - 2.87, Average = 2.82
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Pseudomorphous - Occurs in the form of another mineral.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Kuzmenkoite-Zn

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.035 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.07 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.245,KPDmeas= 0.2541,KC= 0.2635
Ncalc = 1.73 - 1.77
Help on Optical Data: Optical Data: Biaxial (+), a=1.68-1.683, b=1.686-1.688, g=1.783-1.787, bire=0.1030-0.1040, 2V(Calc)=28-30, 2V(Meas)=25. Dispersion dispersion not observed.
 

Calculated Properties of Kuzmenkoite-Zn

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.79 gm/cc
note: Specific Gravity of Kuzmenkoite-Zn =2.83 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEKuzmenkoite-Zn = 25.37 barns/electron
U=PEKuzmenkoite-Zn x relectron= 70.70 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 67.78 (Gamma Ray American Petroleum Institute Units)
Concentration of Kuzmenkoite-Zn per GRapi unit = 1.48 (%)

Estimated Radioactivity from Kuzmenkoite-Zn - barely detectable

 

Kuzmenkoite-Zn Classification

Help on  Dana Class: Dana Class: 60.01.03c.02 (60)Cyclosilicate Four-Membered Rings
  (60.01)as Titanosilicates
  (60.01.03c)Labuntsovite Group (Kuzmenkoite subgroup Monoclinic [C2/m])
 
60.01.03c.01 Kuzmenkoite-Mn! (K,Na)2(Mn,Fe)(Ti,Nb)4[Si4O12]2(OH)4•5(H2O) C 2/m 2/m
 
60.01.03c.02 Kuzmenkoite-Zn! K2Zn(Ti,Nb)4(Si4O12)2(OH,O)4•6-8(H2O) Cm m
 
60.01.03c.03 Karupmollerite-Ca! (Na,Ca,K)2Ca(Nb,Ti)4(Si4O12)2(O,OH)4•7(H2O) C 2/m 2/m
 
60.01.03c.04 Lepkhenelmite-Zn! Ba2Zn(Ti,Nb)4(Si4O12)2(O,OH)4•7(H2O) Cm m
Help on  Strunz Class: Strunz Class: 09.CE.30c 09 - SILICATES (Germanates)
  09.C - Cyclosilicates
  09.CE -[Si4O12]8- 4-membered single rings (vierer-Einfachringe),
 
09.CE.30c Gjerdingenite-Mn! (K,Na)2(Mn,Fe)(Nb,Ti)4(Si4O12)2(O,OH)4•6(H2O) C 2/m 2/m
 
09.CE.30c Karupmollerite-Ca! (Na,Ca,K)2Ca(Nb,Ti)4(Si4O12)2(O,OH)4•7(H2O) C 2/m 2/m
 
09.CE.30c Kuzmenkoite-Zn! K2Zn(Ti,Nb)4(Si4O12)2(OH,O)4•6-8(H2O) Cm m
 
09.CE.30c Kuzmenkoite-Mn! (K,Na)2(Mn,Fe)(Ti,Nb)4[Si4O12]2(OH)4•5(H2O) C 2/m 2/m
 
09.CE.30c Gjerdingenite-Fe! K2[(H2O)2(Fe,Mn)][(Nb,Ti)4(Si4O12)2(O,OH)4]•4(H2O) C 2/m 2/m
 
09.CE.30c Lepkhenelmite-Zn! Ba2Zn(Ti,Nb)4(Si4O12)2(O,OH)4•7(H2O) Cm m
 
09.CE.30c Gjerdingenite-Ca! K2Ca(Nb,Ti)4(Si4O12)2(O,OH)4•6H2O C 2/m 2/m
 
09.CE.30c Gjerdingenite-Na! (K,Na)2Na(Nb,Ti)4(Si4O12)2(OH,O)4•5H2O C 2/m 2/m
 
09.CE.30c Burovaite-Ca! (K,Na)4Ca2(Ti,Nb)8[Si4O12]4(OH,O)8•12H2O C 2/m 2/m
 

Other Kuzmenkoite-Zn Information

Help on References: References: NAME( AmMin, v 88, p 932) PHYS. PROP.(AmMin, v 88, p 932) OPTIC PROP.(AmMin, v 88, p 932)
Help on See Also: See Also: Links to other databases for Kuzmenkoite-Zn :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Print or Cut-and-Paste your Kuzmenkoite-Zn Specimen Label here :

Kuzmenkoite-Zn

K2Zn(Ti,Nb)4(Si4O12)2(OH,O)4•6-8(H2O)
Dana No: 60.01.03c.02 Strunz No: 09.CE.30c
Locality:

 

Notes:

 

 
   
 


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