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 |
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Potassium 4.76 % K 5.74 % K2O |
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Barium 1.81 % Ba 2.02 % BaO |
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Sodium 0.36 % Na 0.48 % Na2O |
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Strontium 0.14 % Sr 0.17 % SrO |
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Calcium 1.58 % Ca 2.22 % CaO |
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Magnesium 0.02 % Mg 0.03 % MgO |
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Titanium 10.68 % Ti 17.82 % TiO2 |
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Manganese 1.63 % Mn 2.10 % MnO |
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Niobium 8.87 % Nb 12.69 % Nb2O5 |
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Aluminum 0.04 % Al 0.08 % Al2O3 |
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Zinc 3.01 % Zn 3.75 % ZnO |
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Iron 0.41 % Fe 0.53 % FeO |
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Silicon 18.22 % Si 38.98 % SiO2 |
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Hydrogen 1.56 % H 13.93 % H2O |
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Oxygen 46.89 % O |
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______ ______ |
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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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Search for Kuzmenkoite-Zn Images |
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), |
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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 |
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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 |
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. |
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Calculated Properties of Kuzmenkoite-Zn
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Electron Density: |
relectron=2.79 gm/cc note: rKuzmenkoite-Zn =2.83 gm/cc. |
Fermion Index |
Fermion Index = 0.02724 Boson Index = 0.97276 |
Photoelectric: |
PEKuzmenkoite-Zn = 25.37 barns/electron U=PEKuzmenkoite-Zn x relectron= 70.70 barns/cc. |
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 |
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(60.1)as Titanosilicates |
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(60.1.3c)Labuntsovite Group (Kuzmenkoite subgroup Monoclinic [C2/m]) |
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60.1.3c.1 Kuzmenkoite-Mn! (K,Na)2(Mn,Fe)(Ti,Nb)4[Si4O12]2(OH)4·5(H2O) C 2/m 2/m |
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60.1.3c.2 Kuzmenkoite-Zn ! K2Zn(Ti,Nb)4(Si4O12)2(OH,O)4·6-8(H2O) Cm m |
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60.1.3c.3 Karupmollerite-Ca! (Na,Ca,K)2Ca(Nb,Ti)4(Si4O12)2(O,OH)4·7(H2O) C 2/m 2/m |
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60.1.3c.4 Lepkhenelmite-Zn! Ba2Zn(Ti,Nb)4(Si4O12)2(O,OH)4·7(H2O) Cm m |
Strunz Class: |
VIII/E.07-50* VIII - Silicates |
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VIII/E - Cyklosilicates, quadruplet rings [Si4O11]8- |
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VIII/E.07 - Labuntsovite Group |
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VIII/E.07-10 Korobitsynite! Na3(Ti,Nb)2[Si4O12](OH,O)2·3-4(H2O) Pbam 2/m 2/m 2/m |
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VIII/E.07-20 Nenadkevichite (Na,Ca,K)(Nb,Ti)Si2O6(O,OH)·2(H2O) Pbam 2/m 2/m 2/m |
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VIII/E.07-30* Strontiochevkinite (Sr,REE)4Fe(Ti,Zr)2Ti2Si4O22 C 2/a 2/m |
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VIII/E.07-30 Tsepinite-Na! (Na,H3O,K,Sr,Ba)2(Ti,Nb)2[Si4O12](OH,O)2·3(H2O) Cm m |
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VIII/E.07-32 Tsepinite-K! (K,Ba,Na)2(Ti,Nb)2(Si4O12)(OH,O)2·3(H2O) Cm m |
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VIII/E.07-33 Tsepinite-Ca! (Ca,K,Na,[])2(Ti,Nb)2(Si4O12)(OH,O)2·4(H2O) C 2/m 2/m |
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VIII/E.07-34 Paratsepinite-Ba! (Ba,Na,K)2-x(Ti,Nb)2(Si4O12)(OH,O)2·4(H2O) C 2/m 2/m |
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VIII/E.07-40 Vuoriyarvite-K! (K,Na)2(Nb,Ti)2Si4O12(O,OH)2·4(H2O) Cm m |
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VIII/E.07-50 Clinophosinaite! Na3CaPSiO7 P 2/c 2/m |
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VIII/E.07-50* Kuzmenkoite-Zn K2Zn(Ti,Nb)4(Si4O12)2(OH,O)4·6-8(H2O) Cm m |
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VIII/E.07-60* Kuzmenkoite-Mn! (K,Na)2(Mn,Fe)(Ti,Nb)4[Si4O12]2(OH)4·5(H2O) C 2/m 2/m |
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VIII/E.07-60 Phosinaite-(Ce)! Na13Ca2Ce[Si4O12](PO4)4 P 22121 2 2 2 |
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VIII/E.07-70 Gjerdingenite-Fe! K2[(H2O)2(Fe,Mn)][(Nb,Ti)4(Si4O12)2(O,OH)4]·4(H2O) C 2/m 2/m |
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VIII/E.07-80 Gjerdingenite-Mn! (K,Na)2(Mn,Fe)(Nb,Ti)4(Si4O12)2(O,OH)4·6(H2O) C 2/m 2/m |
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VIII/E.07-90 Karupmollerite-Ca! (Na,Ca,K)2Ca(Nb,Ti)4(Si4O12)2(O,OH)4·7(H2O) C 2/m 2/m |
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VIII/E.07-100 Lemmleinite-K! NaK2(Ti,Nb)2Si4O12(O,OH)2·2(H2O) C 2/m 2/m |
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VIII/E.07-110 Lemmleinite-Ba! Na2K2Ba1-xTi4(Si4O12)2(O,OH)4·5(H2O) C 2/m 2/m |
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VIII/E.07-130 Paralabuntsovite-Mg! Na8K8Mg8Ti16(Si4O12)8(O,OH)16·n(H2O) I2/m 2/m |
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VIII/E.07-140 Labuntsovite-Mg! Na4K4(Ba,K)(Mg,Fe)1xTi8(Si4O12)4(O,OH)8·10(H2O) C 2/m 2/m |
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VIII/E.07-150 Labuntsovite-Fe! Na4K4(Ba,K)2(Fe,Mg,Mn)1xTi8(Si4O12)4(O,OH)8·10(H2O) C 2/m 2/m |
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VIII/E.07-155 Labuntsovite-Mn Na4K4(Ba,K)(Mn,Fe)1x(Ti,Nb)8[Si4O12]4(O,OH)8·n(H2O),n=10-12 I2/m 2/m |
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VIII/E.07-170 Parakuzmenkoite-Fe! (K,Ba)2Fe(Ti,Nb)4(Si4O12)2(O,OH)4·7(H2O) C 2/m 2/m |
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VIII/E.07-180 Organovaite-Zn! K2Zn(Nb,Ti)4(Si4O12)2(O,OH)4·6(H2O) C 2/m 2/m |
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VIII/E.07-190 Organovaite-Mn! K2Mn(Nb,Ti)4(Si4O12)2(O,OH)4·6(H2O) Cm m |
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VIII/E.07-200 Gutkovaite-Mn! CaK2Mn(Ti,Nb)4(Si4O12)2(O,OH)4·5(H2O) Cm m |
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VIII/E.07-205 Neskevaaraite-Fe! NaK3Fe(Ti,Nb)4(Si4O12)2(O,OH)4·6(H2O) Cm m |
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VIII/E.07-210 Alsakharovite-Zn! NaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4·7(H2O) Cm m |
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VIII/E.07-220 Lepkhenelmite-Zn! Ba2Zn(Ti,Nb)4(Si4O12)2(O,OH)4·7(H2O) Cm m |
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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)
9 -QUT Mineral Atlas
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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: 60.1.3c.2 Strunz No: VIII/E.07-50*
Locality:
Notes:
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