Paralabuntsovite-Mg Mineral Data

Paralabuntsovite-Mg Mineral Data

General Paralabuntsovite-Mg Information

Chemical Formula:

Na8K8Mg8Ti16(Si4O12)8(O,OH)16· n(H2O)

Composition:

Molecular Weight = 4,336.11 gm

Potassium 7.21 % K 8.69 % K₂O

Sodium 4.24 % Na 5.72 % Na₂O

Magnesium 4.48 % Mg 7.44 % MgO

Titanium 17.67 % Ti 29.47 % TiO₂

Silicon 20.73 % Si 44.34 % SiO₂

Hydrogen 0.65 % H 5.82 % H₂O

Oxygen 45.02 % O

______ ______

100.00 % 101.48 % = TOTAL OXIDE

Empirical Formula:

Na₈K₈Mg₈Ti₁₆(Si₄O₁₂)₈O₈(OH)₈·10(H₂O)

IMA Status:

Proposed IMA 2000 (Dana # Added)

Locality:

Link to MinDat.org Location Data.

Synonym:

IMA2000-A

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Paralabuntsovite-Mg Crystallography

Axial Ratios:

a:b:c =1.1304:1:0.5652

Cell Dimensions:

a = 15.6, b = 13.8, c = 7.8, Z = 1; beta = 117° V = 1,496.16 Den(Calc)= 4.81

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: I2/m

Physical Properties of Paralabuntsovite-Mg

Diaphaniety:

Translucent to transparent

Hardness:

6 - Orthoclase

Luster:

Vitreous (Glassy)

Optical Properties of Paralabuntsovite-Mg

Optical Data:

Biaxial (+)

NCalc= 2.3 - from Gladstone-Dale relationship (KC = 0.2706) where Ncalc=Dcalc*KC+1

Calculated Properties of Paralabuntsovite-Mg

Electron Density:

r_electron=4.75 gm/cc
note: r_{Paralabuntsovite-Mg}=4.81 gm/cc.

Fermion Index

Fermion Index = 0.03723
Boson Index = 0.96277

Photoelectric:

PE_{Paralabuntsovite-Mg}= 4.56 barns/electron
U=PE_{Paralabuntsovite-Mg} x r_electron= 21.64 barns/cc.

Radioactivity:

GRapi = 102.75 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Paralabuntsovite-Mg - barely detectable

Paralabuntsovite-Mg Classification

Dana Class:

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

(60.1)as Titanosilicates

(60.1.3g)Labuntsovite Group (Paralabuntsovite subgroup Monoclinic [I2/m])

60.1.3g.1 Paralabuntsovite-Mg ! Na8K8Mg8Ti16(Si4O12)8(O,OH)16·n(H2O) I2/m 2/m

Strunz Class:

VIII/E.07-130 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 Paralabuntsovite-Mg Information

See Also:

Links to other databases for Paralabuntsovite-Mg :
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 Paralabuntsovite-Mg Specimen Label here :

Paralabuntsovite-Mg

Na8K8Mg8Ti16(Si4O12)8(O,OH)16· n(H2O)
Dana No: 60.1.3g.1 Strunz No: VIII/E.07-130
Locality:

Notes: