General Kuzmenkoite-Mn Information
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Chemical Formula: |
(K,Na)2(Mn,Fe)(Ti,Nb)4[Si4O12]2(OH)4·5(H2O) |
Composition: |
Molecular Weight = 1,095.05 gm |
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Potassium 6.07 % K 7.31 % K2O |
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Sodium 0.63 % Na 0.85 % Na2O |
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Titanium 15.74 % Ti 26.26 % TiO2 |
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Manganese 3.51 % Mn 4.53 % MnO |
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Niobium 3.39 % Nb 4.85 % Nb2O5 |
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Iron 1.02 % Fe 1.31 % FeO |
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Silicon 20.52 % Si 43.90 % SiO2 |
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Hydrogen 1.24 % H 11.06 % H2O |
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Oxygen 47.88 % O |
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______ ______ |
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100.00 % 100.07 % = TOTAL OXIDE |
Empirical Formula: |
K1.7Na0.3Mn2+0.7Fe2+0.2Ti3.6Nb0.4Si8O24(OH)4.1·4.67(H2O) |
Environment: |
Late hydrothermal phase in minute cavities in albitized murmanite-bearing lujavrites. Also pseudomorphous after murmanite. Structurally related to labuntsovite. |
IMA Status: |
Approved IMA 2000 (Dana # Added) |
Locality: |
Mt. Flora (north ridge of Mt. Selsurt) in the northern part of the 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). |
Synonym: |
IMA1998-058 |
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IMA2000-A |
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Kuzmenkoite |
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Kuzmenkoite-Mn Crystallography
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Axial Ratios: |
a:b:c =1.0332:1:1.0139 |
Cell Dimensions: |
a = 14.369, b = 13.906, c = 14.1, Z = 4; beta = 117.09° V = 2,508.31 Den(Calc)= 2.90 |
Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m |
X Ray Diffraction: |
By Intensity(I/Io): 3.17(1)(421,402), 7(0.9)(001,020), 6.33(0.8)(201),
4.86(0.7)(021,111), 3.08(0.5)(022,041), 1.551(0.4)(843,173,82 |
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Physical Properties of Kuzmenkoite-Mn
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Cleavage: |
[???] Imperfect |
Color: |
Yellow, Dark orange, Colorless. |
Density: |
2.67 - 2.97, Average = 2.82 |
Diaphaniety: |
Transparent |
Fracture: |
Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. |
Habit: |
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). |
Hardness: |
5 - Apatite |
Luster: |
Vitreous (Glassy) |
Streak: |
white |
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Optical Properties of Kuzmenkoite-Mn
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Gladstone-Dale: |
CI meas= 0.069 (Fair) - where the CI = (1-KPDmeas/KC) CI calc= 0.095 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2466,KPDmeas= 0.2535,KC= 0.2724 |
Optical Data: |
Biaxial (+), a=1.683, b=1.687, g=1.775, bire=0.0920 |
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Calculated Properties of Kuzmenkoite-Mn
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Electron Density: |
relectron=2.79 gm/cc note: rKuzmenkoite-Mn =2.82 gm/cc. |
Fermion Index |
Fermion Index = 0.03038 Boson Index = 0.96962 |
Photoelectric: |
PEKuzmenkoite-Mn = 10.01 barns/electron U=PEKuzmenkoite-Mn x relectron= 27.93 barns/cc. |
Radioactivity: |
GRapi = 86.61 (Gamma Ray American Petroleum Institute Units)
Estimated Radioactivity from Kuzmenkoite-Mn - barely detectable
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Kuzmenkoite-Mn Classification
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Dana Class: |
60.1.3c.1 (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.07-60* 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-Mn Information
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References: |
NAME( AmMin, vol 85, p 1562) PHYS. PROP.(AmMin, vol 85, p 1562) OPTIC PROP.(AmMin, vol 85, p 1562) |
See Also: |
Links to other databases for Kuzmenkoite-Mn :
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-Mn Specimen Label here :
Kuzmenkoite-Mn
(K,Na)2(Mn,Fe)(Ti,Nb)4[Si4O12]2(OH)4·5(H2O)
Dana No: 60.1.3c.1 Strunz No: VIII/E.07-60*
Locality:
Notes:
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