Kuzmenkoite-Zn Mineral Data |
General Kuzmenkoite-Zn Information |
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Chemical Formula: | K2Zn(Ti,Nb)4(Si4O12)2(OH,O)4·6-8(H2O) | ||
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 | |||
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) | ||
Environment: | Hydrothermal product in 3 pegmatites. May form pseudomorphs after murmanite. (labuntosovite group; structure) | ||
IMA Status: | Approved IMA 2002 (Dana # Added) | ||
Locality: | Mount Kedydverpakhk and Mount Krrnasurt, Lovozero massif, Kola Peninsula, Russia. Link to MinDat.org Location Data. | ||
Name Origin: | Named for the Russian geochemist and mineralogist Maria V. Kuz'menko (1918-1995) and the Zn content. | ||
Synonym: | IMA2001-037 | ||
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Images: |
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Kuzmenkoite-Zn Crystallography |
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Axial Ratios: | a:b:c =1.0396:1:0.5617 | ||
Cell Dimensions: | a = 14.4, b = 13.851, c = 7.781, Z = 2; beta = 117.33° V = 1,378.72 Den(Calc)= 2.93 | ||
Crystal System: | Monoclinic - DomaticH-M Symbol (m) Space Group: Cm | ||
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 |
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Cleavage: | None | ||
Color: | Colorless, White, Grayish white, Pale pink, Light brown. | ||
Density: | 2.78 - 2.87, Average = 2.82 | ||
Diaphaniety: | Transparent to Translucent | ||
Fracture: | Brittle - Uneven - Very brittle fracture producing uneven fragments. | ||
Habit: | Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). | ||
Habit: | Pseudomorphous - Occurs in the form of another mineral. | ||
Luster: | Vitreous (Glassy) | ||
Streak: | white | ||
Optical Properties of Kuzmenkoite-Zn |
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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 |
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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 |
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Electron Density: | relectron=2.79 gm/cc |
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Fermion Index | Fermion Index = 0.02724 Boson Index = 0.97276 |
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Photoelectric: | PEKuzmenkoite-Zn = 25.37 barns/electron |
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Radioactivity: | GRapi = 67.78 (Gamma Ray American Petroleum Institute Units) Estimated Radioactivity from Kuzmenkoite-Zn - barely detectable |
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Kuzmenkoite-Zn Classification |
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Dana Class: | 60.1.3c.2 (60)Cyclosilicate Four-Membered Rings | ||
(60.1)as Titanosilicates | |||
(60.1.3c)Labuntsovite Group (Kuzmenkoite subgroup Monoclinic [C2/m]) | |||
Strunz Class: | VIII/E.07-50* VIII - Silicates | ||
VIII/E - Cyklosilicates, quadruplet rings [Si4O11]8- | |||
VIII/E.07 - Labuntsovite Group | |||
Other Kuzmenkoite-Zn Information |
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References: | NAME( AmMin, v 88, p 932) PHYS. PROP.(AmMin, v 88, p 932) OPTIC PROP.(AmMin, v 88, p 932) | ||
See Also: | Links to other databases for Kuzmenkoite-Zn : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) Search for Kuzmenkoite-Zn using: Visit our Advertisers for Kuzmenkoite-Zn : Translate Kuzmenkoite-Zn Mineral Data : Ask about Kuzmenkoite-Zn here : Print or Cut-and-Paste your Kuzmenkoite-Zn Specimen Label here :
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