Kuzmenkoite-Mn Mineral Data

Kuzmenkoite-Mn Mineral Data

General Kuzmenkoite-Mn Information

Chemical Formula:

(K,Na)2(Mn,Fe)(Ti,Nb)4[Si4O12]2(OH)4·5(H2O)

Composition:

Molecular Weight = 1,095.05 gm

Potassium 6.07 % K 7.31 % K₂O

Sodium 0.63 % Na 0.85 % Na₂O

Titanium 15.74 % Ti 26.26 % TiO₂

Manganese 3.51 % Mn 4.53 % MnO

Niobium 3.39 % Nb 4.85 % Nb₂O₅

Iron 1.02 % Fe 1.31 % FeO

Silicon 20.52 % Si 43.90 % SiO₂

Hydrogen 1.24 % H 11.06 % H₂O

Oxygen 47.88 % O

______ ______

100.00 % 100.07 % = TOTAL OXIDE

Empirical Formula:

K_1.7Na_0.3Mn²⁺_0.7Fe²⁺_0.2Ti_3.6Nb_0.4Si₈O₂₄(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

IMA2000-A

Kuzmenkoite

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Kuzmenkoite-Mn Crystallography

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

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 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

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

Optical Properties of Kuzmenkoite-Mn

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

Calculated Properties of Kuzmenkoite-Mn

Electron Density:

r_electron=2.79 gm/cc
note: r_{Kuzmenkoite-Mn}=2.82 gm/cc.

Fermion Index

Fermion Index = 0.03038
Boson Index = 0.96962

Photoelectric:

PE_{Kuzmenkoite-Mn}= 10.01 barns/electron
U=PE_{Kuzmenkoite-Mn} x r_electron= 27.93 barns/cc.

Radioactivity:

GRapi = 86.61 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Kuzmenkoite-Mn - barely detectable

Kuzmenkoite-Mn Classification

Dana Class:

60.1.3c.1 (60)Cyclosilicate Four-Membered Rings

(60.1)as Titanosilicates

(60.1.3c)Labuntsovite Group (Kuzmenkoite subgroup Monoclinic [C2/m])

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

60.1.3c.2 Kuzmenkoite-Zn! K2Zn(Ti,Nb)4(Si4O12)2(OH,O)4·6-8(H2O) Cm m

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

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

VIII/E - Cyklosilicates, quadruplet rings [Si4O11]8-

VIII/E.07 - Labuntsovite Group

VIII/E.07-10 Korobitsynite! Na3(Ti,Nb)2[Si4O12](OH,O)2·3-4(H2O) Pbam 2/m 2/m 2/m

VIII/E.07-20 Nenadkevichite (Na,Ca,K)(Nb,Ti)Si2O6(O,OH)·2(H2O) Pbam 2/m 2/m 2/m

VIII/E.07-30* Strontiochevkinite (Sr,REE)4Fe(Ti,Zr)2Ti2Si4O22 C 2/a 2/m

VIII/E.07-30 Tsepinite-Na! (Na,H3O,K,Sr,Ba)2(Ti,Nb)2[Si4O12](OH,O)2·3(H2O) Cm m

VIII/E.07-32 Tsepinite-K! (K,Ba,Na)2(Ti,Nb)2(Si4O12)(OH,O)2·3(H2O) Cm m

VIII/E.07-33 Tsepinite-Ca! (Ca,K,Na,[])2(Ti,Nb)2(Si4O12)(OH,O)2·4(H2O) C 2/m 2/m

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

VIII/E.07-40 Vuoriyarvite-K! (K,Na)2(Nb,Ti)2Si4O12(O,OH)2·4(H2O) Cm m

VIII/E.07-50 Clinophosinaite! Na3CaPSiO7 P 2/c 2/m

VIII/E.07-50* Kuzmenkoite-Zn! K2Zn(Ti,Nb)4(Si4O12)2(OH,O)4·6-8(H2O) Cm m

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

VIII/E.07-60 Phosinaite-(Ce)! Na13Ca2Ce[Si4O12](PO4)4 P 22121 2 2 2

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

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

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

VIII/E.07-100 Lemmleinite-K! NaK2(Ti,Nb)2Si4O12(O,OH)2·2(H2O) C 2/m 2/m

VIII/E.07-110 Lemmleinite-Ba! Na2K2Ba1-xTi4(Si4O12)2(O,OH)4·5(H2O) C 2/m 2/m

VIII/E.07-130 Paralabuntsovite-Mg! Na8K8Mg8Ti16(Si4O12)8(O,OH)16·n(H2O) I2/m 2/m

VIII/E.07-140 Labuntsovite-Mg! Na4K4(Ba,K)(Mg,Fe)1xTi8(Si4O12)4(O,OH)8·10(H2O) C 2/m 2/m

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

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

VIII/E.07-170 Parakuzmenkoite-Fe! (K,Ba)2Fe(Ti,Nb)4(Si4O12)2(O,OH)4·7(H2O) C 2/m 2/m

VIII/E.07-180 Organovaite-Zn! K2Zn(Nb,Ti)4(Si4O12)2(O,OH)4·6(H2O) C 2/m 2/m

VIII/E.07-190 Organovaite-Mn! K2Mn(Nb,Ti)4(Si4O12)2(O,OH)4·6(H2O) Cm m

VIII/E.07-200 Gutkovaite-Mn! CaK2Mn(Ti,Nb)4(Si4O12)2(O,OH)4·5(H2O) Cm m

VIII/E.07-205 Neskevaaraite-Fe! NaK3Fe(Ti,Nb)4(Si4O12)2(O,OH)4·6(H2O) Cm m

VIII/E.07-210 Alsakharovite-Zn! NaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4·7(H2O) Cm m

VIII/E.07-220 Lepkhenelmite-Zn! Ba2Zn(Ti,Nb)4(Si4O12)2(O,OH)4·7(H2O) Cm m

Other Kuzmenkoite-Mn Information

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: