Labuntsovite-Fe Mineral Data

Labuntsovite-Fe Mineral Data +

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General Labuntsovite-Fe Information

Chemical Formula:

Na4K4(Ba,K)2(Fe,Mg,Mn)1+xTi8(Si4O12)4(O,OH)8·10(H2O)

Composition:

Molecular Weight = 2,418.89 gm

Potassium 6.95 % K 8.37 % K₂O

Barium 7.38 % Ba 8.24 % BaO

Sodium 4.09 % Na 5.51 % Na₂O

Magnesium 0.20 % Mg 0.33 % MgO

Titanium 15.44 % Ti 25.76 % TiO₂

Manganese 0.23 % Mn 0.29 % MnO

Niobium 0.77 % Nb 1.10 % Nb₂O₅

Iron 1.85 % Fe 2.38 % FeO

Silicon 18.58 % Si 39.74 % SiO₂

Hydrogen 0.93 % H 8.34 % H₂O

Oxygen 43.59 % O

______ ______

100.00 % 100.07 % = TOTAL OXIDE

Empirical Formula:

Na_4.3K_4.3Ba_1.3(H₂O)_2.2Fe²⁺_0.8Mg_0.2Mn²⁺_0.1Ti_7.8Nb_0.2Si₁₆O_53.4(OH)_2.6·7.7(H₂O)

Environment:

Occurs in K-feldspar-natrolite-calcite veinlets in hydrothermally altered urtite. Labuntsovite group, structure

IMA Status:

Approved IMA 2002 (Dana # Added)

Locality:

Mount Kukisvumchorr, Khibiny alkaline massif, Kola Peninsula. Russia. Link to MinDat.org Location Data.

Name Origin:

Named as the Fe dominant member of the labuntsovite subgroup.

Synonym:

IMA1998-051

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Labuntsovite-Fe Crystallography

Axial Ratios:

a:b:c =1.0332:1:0.5639

Cell Dimensions:

a = 14.249, b = 13.791, c = 7.777, Z = 1; beta = 116.82° V = 1,363.85 Den(Calc)= 2.94

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): 3.169(1)(400,402,421), 2.585(0.58)(241,242), 6.95(0.56)(001),3.032(0.53)(240,241), 3.1(0.53)(022,041), 6.35(0.34),

Physical Properties of Labuntsovite-Fe

Color:

Orange.

Density:

2.94

Diaphaniety:

Translucent to transparent

Habit:

Anhedral Grains - Granular minerals without the expression of crystal shapes

Hardness:

5 - Apatite

Luster:

Vitreous (Glassy)

Optical Properties of Labuntsovite-Fe

Gladstone-Dale:

CI meas= 0.027 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.027 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2514,KPDmeas= 0.2514,KC= 0.2583

Optical Data:

Biaxial (+), a=1.686, b=1.696, g=1.835, bire=0.1490

Calculated Properties of Labuntsovite-Fe

Electron Density:

r_electron=2.87 gm/cc
note: r_{Labuntsovite-Fe}=2.94 gm/cc.

Fermion Index

Fermion Index = 0.0426
Boson Index = 0.9574

Photoelectric:

PE_{Labuntsovite-Fe}= 36.07 barns/electron
U=PE_{Labuntsovite-Fe} x r_electron= 103.53 barns/cc.

Radioactivity:

GRapi = 97.92 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Labuntsovite-Fe - barely detectable

Labuntsovite-Fe Classification

Dana Class:

60.1.3e.3 (60)Cyclosilicate Four-Membered Rings

(60.1)as Titanosilicates

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

60.1.3e.1 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

60.1.3e.2 Labuntsovite-Mg! Na4K4(Ba,K)(Mg,Fe)1xTi8(Si4O12)4(O,OH)8·10(H2O) C 2/m 2/m

60.1.3e.3 Labuntsovite-Fe ! Na4K4(Ba,K)2(Fe,Mg,Mn)1xTi8(Si4O12)4(O,OH)8·10(H2O) C 2/m 2/m

60.1.3e.4 Paratsepinite-Na! (Na,Sr,K,Ca)7(Ti,Nb)8[Si4O12]4(O,OH)8·n(H2O)n~8 C 2/m 2/m

60.1.3e.5 Gjerdingenite-Mn! (K,Na)2(Mn,Fe)(Nb,Ti)4(Si4O12)2(O,OH)4·6(H2O) C 2/m 2/m

Strunz Class:

VIII/E.07-150 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 Labuntsovite-Fe Information

References:

NAME( AmMin, v 87, p 1733) PHYS. PROP.(AmMin, v 87, p 1733) OPTIC PROP.(AmMin, v 87, p 1733)

See Also:

Links to other databases for Labuntsovite-Fe :
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 Labuntsovite-Fe Specimen Label here :

Labuntsovite-Fe

Na4K4(Ba,K)2(Fe,Mg,Mn)1+xTi8(Si4O12)4(O,OH)8·10(H2O)
Dana No: 60.1.3e.3 Strunz No: VIII/E.07-150
Locality:

Notes: