Georgbarsanovite Mineral Data

Georgbarsanovite Mineral Data

General Georgbarsanovite Information

Chemical Formula:

Na12(Mn,Sr,REE)3Ca6Fe++3Zr3NbSi25O76Cl2·H2O

Composition:

Molecular Weight = 3,278.42 gm

Sodium 8.41 % Na 11.34 % Na₂O

Strontium 2.41 % Sr 2.84 % SrO

Calcium 7.33 % Ca 10.26 % CaO

La,Ce,Pr,Nd,Sm, 1.32 % RE 1.54 % REE₂O₃

Zirconium 8.35 % Zr 11.28 % ZrO₂

Manganese 3.02 % Mn 3.89 % MnO

Niobium 2.83 % Nb 4.05 % Nb₂O₅

Iron 5.11 % Fe 6.57 % FeO

Silicon 21.42 % Si 45.82 % SiO₂

Hydrogen 0.06 % H 0.55 % H₂O

Chlorine 2.16 % Cl 2.16 % Cl

- % Cl -0.49 % -O=Cl₂

Oxygen 37.58 % O

______ ______

100.00 % 99.83 % = TOTAL OXIDE

Empirical Formula:

Na₁₂Mn²⁺_1.8Sr_0.9REE_0.3Ca₆Fe²⁺₃Zr₃NbSi₂₅O₇₆Cl₂·(H₂O)

IMA Status:

Proposed IMA 2003 (Dana # Added)

Locality:

Link to MinDat.org Location Data.

Name Origin:

Commission on New Minerals and Mineral Names (CNMMN)

Synonym:

Barsanovite - Discredited 1969

IMA2003-013

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Georgbarsanovite Crystallography

Axial Ratios:

a:c = 1:2.09991

Cell Dimensions:

a = 14.262, c = 29.949, Z = 4; V = 5,275.63 Den(Calc)= 4.13

Crystal System:

Trigonal - Ditrigonal PyramidalH-M Symbol (3m) Space Group: R 3m

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

By Intensity(I/I_o): 3.202(1), 2.975(0.98), 2.857(0.84),3.155(0.71), 4.3(0.62), 2.591(0.54), 6.42(0.54),

Physical Properties of Georgbarsanovite

Color:

Yellowish green.

Diaphaniety:

Translucent to transparent

Luster:

Vitreous (Glassy)

Optical Properties of Georgbarsanovite

Gladstone-Dale:

CI calc= 0.261 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1538,KC= 0.2079

Optical Data:

Uniaxial (-), e=1.631, w=1.639, bire=0.0080.

Calculated Properties of Georgbarsanovite

Electron Density:

r_electron=4.01 gm/cc
note: r_{Georgbarsanovite}=4.13 gm/cc.

Fermion Index

Fermion Index = 0.02486
Boson Index = 0.97514

Photoelectric:

PE_{Georgbarsanovite}= 29.84 barns/electron
U=PE_{Georgbarsanovite} x r_electron= 119.56 barns/cc.

Radioactivity:

GRapi = 1,368.65 (Gamma Ray American Petroleum Institute Units)

**Estimated Radioactivity from Georgbarsanovite** - mild
Specimen Size Weight/Volume (Sphere) *	Calculated Activity Bequerols (Bq)	Calculated Activity Curies (Ci)	Estimated Activity GR(api)	Estimated Exposure (mRem**)/hr If Held in Hand For One Hour
1000 gm / 7.73 cm	29,622	8.01E-07	1,368.65	0.45
100 gm / 3.59 cm	2,962	8.01E-08	136.87	0.04
10 gm / 1.67 cm	296	8.01E-09	13.69	0.00
1 gm / 7.73 mm	30	8.01E-10	1.37	0.00
0.1 gm / 3.59 mm	3	8.01E-11	0.14	0.00
0.01 gm / 1.67 mm	0	8.01E-12	0.01	0.00
0.001 gm / 0.77 mm	0	8.01E-13	0.00	0.00

Weight of pure Georgbarsanovite in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.13 gm/cc.*
Goverment Estimate of Average Annual Exposure ( 360 mRem) **
Note: 10 microsieverts/hr = 1 mRem/hr **
Max Permissable Adult Dose 50,000 mRem/yr (hands), 15,000 mRem/yr (eyes)
Lethal Dose LD(50) Exposure 400,000 to 500,000 mRem
Estimated Thorium Activity ( 0.07 % Th) From Sum REE Elements ( 1.32 % REE)

Georgbarsanovite Classification

Dana Class:

64.1.1.17 (64)Cyclosilicate Rings with Other Anions and Insular Silicate Groups

(64.1)with mixed ring types

(64.1.1)Eudialyte Group

64.1.1.1 Eudialyte Na4(Ca,Ce)2(Fe,Mn,Y)ZrSi8O22(OH,Cl)2(?) R 3m 3 2/m

64.1.1.2 Alluaivite Na19(Ca,Mn)6(Ti,Nb)3(Si3O9)2(Si10O28)2Cl·2(H2O) R 3m 3 2/m

64.1.1.3 Kentbrooksite! (Na,REE)15(Ca,REE)6MnZr3NbSi25O74F2·2(H2O) R 3m 3m

64.1.1.4 Khomyakovite! Na12Sr3Ca6Fe3Zr3W(Si25O73)(O,OH,H2O)3(OH,Cl)2 R 3m 3m

64.1.1.5 Manganokhomyakovite! Na12Sr3Ca6Mn3Zr3W(Si25O73)(O,OH,H2O)3(OH,Cl)2 R 3m 3m

64.1.1.6 Oneillite! Na15Ca3Mn3Fe3Zr3Nb(Si25O73)(O,OH,H2O)3(OH,Cl)2 R 3 3

64.1.1.7 Ferrokentbrooksite! Na15Ca6(Fe,Mn)3Zr3NbSi25O73(O,OH,H2O)3(Cl,F,OH)2 R 3m 3m

64.1.1.8 Ikranite! (Na,H3O)15(Ca,Mn,REE)6Fe2Zr3([],Zr)([],Si)Si24O66(O,OH)6Cl·2-3H2O R 3m 3m

64.1.1.9 Feklichevite! Na11Ca9(Fe,Fe)2Zr3Nb[Si25O73](OH,H2O,Cl,O)5 R 3m 3m

64.1.1.10 Rastsvetaevite! Na27K8Ca12Fe3Zr6Si52O144(O,OH,H2O)6Cl2 R 3m 3m

64.1.1.11 Taseqite! Na12Sr3Ca6Fe3Zr3NbSi25O73(O,OH,H2O)3Cl2 R 3m 3m

64.1.1.12 Carbokentbrooksite! (Na,[])12(Na,Ce)3Ca6Mn3Zr3Nb(Si25O73)(OH)3(CO3)·H2O R 3m 3m

64.1.1.13 Zirsilite-(Ce)! (Na,[])12(Ce,Na)3Ca6Mn3Zr3Nb(Si25O73)(OH)3(CO3)·H2O R 3m 3m

64.1.1.14 Labyrinthite! (Na,K,Sr)35Ca12Fe3Zr6TiSi51O144(O,OH,H2O)9Cl3 R 3m 3m

64.1.1.15 Aqualite! (H3O)8(Na,K,Sr)5Ca6Zr3Si26O66(OH)9Cl R 3m 3m

64.1.1.16 Raslakite! Na15Ca3Fe3(Na,Zr)3Zr3(Si,Nb)(Si25O73)(OH,H2O)3(Cl,OH) R 3m 3m

64.1.1.17 Georgbarsanovite ! Na12(Mn,Sr,REE)3Ca6Fe3Zr3NbSi25O76Cl2·H2O R 3m 3m

64.1.1.18 IMA2004-026! Na12(Ce,REE,Sr)3Ca6Mn3Zr3W(Si25O73)(OH)3(CO3)·H2O R 3m 3m

64.1.1.19 Mogovidite! Na9(Ca,Na)6Ca6Fe2Zr3[]Si25O72(CO3)(OH)4 R 3m 3m

Strunz Class:

VIII/EX.00-00 VIII - Silicates

VIII/EX - Unclassified Strunz Cyklosilicates

VIII/EX.00 - Eudialyte Group

Other Georgbarsanovite Information

See Also:

Links to other databases for Georgbarsanovite :
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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Georgbarsanovite

Na12(Mn,Sr,REE)3Ca6Fe++3Zr3NbSi25O76Cl2·H2O
Dana No: 64.1.1.17 Strunz No: VIII/EX.00-00
Locality:

Notes: