Georgbarsanovite Mineral Data

General Georgbarsanovite Information

Chemical Formula:

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

Composition:

Molecular Weight = 3,297.19 gm

Potassium 0.28 % K 0.34 % K₂O

Barium 0.12 % Ba 0.14 % BaO

Sodium 8.18 % Na 11.02 % Na₂O

Strontium 1.89 % Sr 2.23 % SrO

Calcium 7.66 % Ca 10.71 % CaO

La,Ce,Pr,Nd,Sm, 2.75 % RE 3.21 % REE₂O₃

Yttrium 0.35 % Y 0.45 % Y₂O₃

Hafnium 0.22 % Hf 0.26 % HfO₂

Zirconium 8.94 % Zr 12.07 % ZrO₂

Titanium 0.07 % Ti 0.12 % TiO₂

Manganese 1.98 % Mn 2.56 % MnO

Niobium 2.59 % Nb 3.71 % Nb₂O₅

Iron 4.32 % Fe 5.56 % FeO

Silicon 21.51 % Si 46.01 % SiO₂

Hydrogen 0.05 % H 0.48 % H₂O

Chlorine 1.19 % Cl 1.19 % Cl

- % Cl -0.27 % -O=Cl₂

Oxygen 37.54 % O

Fluorine 0.35 % F 0.35 % F

- % F -0.15 % -O=F₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Na_11.73K_0.24Mn²⁺_1.19Sr_0.71REE_0.63Ca_0.3Y_0.13Ba_0.03Ca₆Fe²⁺_2.55Zr_0.23Ti_0.05Hf_0.04Zr₃ Nb_0.92Si_25.25O_76.48Cl_1.11F_0.61·0.88(H₂O)

Environment:

Collected (prior to 1963) from boulders of nepheline-feldspar pegmatite. Georgbarsanovite and eudialyte form irregular aggregates.

IMA Status:

Approved IMA 2007 (Dana # Added)

Locality:

Upper reaches of the Petreliusa River valley, Khibiny alkaline massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for Georgiy Pavlovich Barsanov (1907-1991), prominent Russian mineralogist.

Synonym:

Barsanovite - Discredited 1969

IMA2003-013 - Discredited monoclinic Barsanovite

IMA2007-008 - Revalidated trigonal Georgbarsanovite

Georgbarsanovite Image

Images:

Georgbarsanovite

Comments: A small translucent crystalline fragment of georgbarsanovite, from the type locality.
Location: Nepheline pegmatite outcrop, Petrelius River, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Fragment Size 0.05 cm,.
© Jeff Weissman / Photographic Guide to Mineral Species

Georgbarsanovite Crystallography

Axial Ratios:

a:c = 1:2.10312

Cell Dimensions:

a = 14.274, c = 30.02, Z = 3; V = 5,297.04 Den(Calc)= 3.10

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)(208), 2.975(0.98)(315), 3.155(0.71)(217),4.304(0.62)(205), 2.591(0.54)(039), 6.42(0.54)(104), 3.017(0.51)(119), 3.176(0.51)(306), 2.857(0.44)(404),

Crystal Structure:

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Ekimenkova I A , Rastsvetaeva R K , Khomyakov A P , Doklady Chemistry , 370 (2000) p.17-20, Crystal structure of the Fe,Cl-analogue of kentbrooksite, Locality: Petrelius peak, Khibiny massif, Kola Peninsula, Russia

Physical Properties of Georgbarsanovite

Cleavage:

None

Color:

Yellowish green.

Density:

3.05

Diaphaneity:

Translucent to transparent

Fracture:

Brittle - Uneven - Very brittle fracture producing uneven fragments.

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Hardness:

5 - Apatite

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Georgbarsanovite

Gladstone-Dale:

CI meas= -0.014 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.003 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2048,KPDmeas= 0.2082,KC= 0.2054
Ncalc = 1.63 - 1.64

Optical Data:

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

Calculated Properties of Georgbarsanovite

Electron Density:

Bulk Density (Electron Density)=3.00 gm/cc
note: Specific Gravity of Georgbarsanovite =3.10 gm/cc.

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_{Georgbarsanovite}= 40.78 barns/electron
U=PE_{Georgbarsanovite} x r_electron= 122.47 barns/cc.

Radioactivity:

GRapi = 2,857.57 (Gamma Ray American Petroleum Institute Units)
Concentration of Georgbarsanovite per GRapi unit = 349.95 (PPM)

**Estimated Radioactivity from Georgbarsanovite** - mild
Specimen Size Weight/Volume (Sphere) *	Calculated Activity Becquerels (Bq)	Calculated Activity Curies (Ci)	Estimated Activity GR(api)	Estimated Exposure (mRem**)/hr If Held in Hand For One Hour
1000 gm / 8.51 cm	61,940	1.67E-06	2,857.57	0.94
100 gm / 3.95 cm	6,194	1.67E-07	285.76	0.09
10 gm / 1.83 cm	619	1.67E-08	28.58	0.01
1 gm / 8.51 mm	62	1.67E-09	2.86	0.00
0.1 gm / 3.95 mm	6	1.67E-10	0.29	0.00
0.01 gm / 1.83 mm	1	1.67E-11	0.03	0.00
0.001 gm / 0.85 mm	0	1.67E-12	0.00	0.00

Weight of pure Georgbarsanovite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.10 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 ( 0.14 % Th) From Sum REE Elements ( 2.75 % REE)

Georgbarsanovite Classification

Dana Class:

64.01.01.17 (64)Cyclosilicates

(64.01)Cyclosilicate Rings with Other Anions and Insular Silicate Groups with mixed ring types

(64.01.01)Eudialyte Group

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

64.01.01.17 Georgbarsanovite! Na12(Mn,Sr,REE)3Ca6Fe3Zr3NbSi25O76Cl2•H2O R 3m 3m

64.01.01.18 Johnsenite-(Ce)! Na12(Ce,REE,Sr)3Ca6Mn3Zr3W(Si25O73)(CO3)(OH,Cl)2 R 3m 3m

64.01.01.19 Golyshevite! (Na,Ca)10Ca9(Fe,Fe)2Zr3NbSi25O72(CO3)(OH)3•H2O R 3m 3m

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

64.01.01.21 Dualite! Na30(Ca,Na,Ce,Sr)12(Na,Mn,Fe,Ti)6Zr3Ti3MnSi51O144(OH,H2O,Cl)9 R 3m 3m

64.01.01.22 Voronkovite! Na15(Na,Ca,Ce)3(Mn,Ca)3Fe3Zr3Si26O72(OH,O)4Cl•H2O R 3 3

Strunz Class:

09.CO.10 09 - SILICATES (Germanates)

09.C - Cyclosilicates

09.CO -[Si9O27]18- 9-membered rings

09.CO.10 Alluaivite Na19(Ca,Mn)6(Ti,Nb)3(Si3O9)2(Si10O28)2Cl•2(H2O) R 3m 3 2/m

09.CO.10 Eudialyte Na4(Ca,Ce)2(Fe,Mn,Y)ZrSi8O22(OH,Cl)2(?) R 3m 3 2/m

09.CO.10 Kentbrooksite! (Na,REE)15(Ca,REE)6MnZr3NbSi25O74F2•2(H2O) R 3m 3m

09.CO.10 Labyrinthite! (Na,K,Sr)35Ca12Fe3Zr6TiSi51O144(O,OH,H2O)9Cl3 R 3m 3m

09.CO.10 Carbokentbrooksite! (Na,[])12(Na,Ce)3Ca6Mn3Zr3Nb(Si25O73)(OH)3(CO3)•H2O R 3m 3m

09.CO.10 Zirsilite-(Ce)! (Na,[])12(Ce,Na)3Ca6Mn3Zr3Nb(Si25O73)(OH)3(CO3)•H2O R 3m 3m

09.CO.10 Mogovidite! Na9(Ca,Na)6Ca6Fe2Zr3[]Si25O72(CO3)(OH)4 R 3m 3m

09.CO.10 Voronkovite! Na15(Na,Ca,Ce)3(Mn,Ca)3Fe3Zr3Si26O72(OH,O)4Cl•H2O R 3 3

09.CO.10 Taseqite! Na12Sr3Ca6Fe3Zr3NbSi25O73(O,OH,H2O)3Cl2 R 3m 3m

09.CO.10 Aqualite! (H3O)8(Na,K,Sr)5Ca6Zr3Si26O66(OH)9Cl R 3m 3m

09.CO.10 Raslakite! Na15Ca3Fe3(Na,Zr)3Zr3(Si,Nb)(Si25O73)(OH,H2O)3(Cl,OH) R 3m 3m

09.CO.10 Feklichevite! Na11Ca9(Fe,Fe)2Zr3Nb[Si25O73](OH,H2O,Cl,O)5 R 3m 3m

09.CO.10 Ikranite! (Na,H3O)15(Ca,Mn,REE)6Fe2Zr3([],Zr)([],Si)Si24O66(O,OH)6Cl•2-3H2O R 3m 3m

09.CO.10 Khomyakovite! Na12Sr3Ca6Fe3Zr3W(Si25O73)(O,OH,H2O)3(OH,Cl)2 R 3m 3m

09.CO.10 Manganokhomyakovite! Na12Sr3Ca6Mn3Zr3W(Si25O73)(O,OH,H2O)3(OH,Cl)2 R 3m 3m

09.CO.10 Oneillite! Na15Ca3Mn3Fe3Zr3Nb(Si25O73)(O,OH,H2O)3(OH,Cl)2 R 3 3

09.CO.10 Ferrokentbrooksite! Na15Ca6(Fe,Mn)3Zr3NbSi25O73(O,OH,H2O)3(Cl,F,OH)2 R 3m 3m

09.CO.10 Rastsvetaevite! Na27K8Ca12Fe3Zr6Si52O144(O,OH,H2O)6Cl2 R 3m 3m

09.CO.10 Johnsenite-(Ce)! Na12(Ce,REE,Sr)3Ca6Mn3Zr3W(Si25O73)(CO3)(OH,Cl)2 R 3m 3m

09.CO.10 Georgbarsanovite! Na12(Mn,Sr,REE)3Ca6Fe3Zr3NbSi25O76Cl2•H2O R 3m 3m

09.CO.10 Golyshevite! (Na,Ca)10Ca9(Fe,Fe)2Zr3NbSi25O72(CO3)(OH)3•H2O R 3m 3m

09.CO.10 Dualite! Na30(Ca,Na,Ce,Sr)12(Na,Mn,Fe,Ti)6Zr3Ti3MnSi51O144(OH,H2O,Cl)9 R 3m 3m

Other Georgbarsanovite Information

References:

NAME( AmMin, v92:704) PHYS. PROP.(AmMin, v92:704) OPTIC PROP.(AmMin, v92:704)

See Also:

Links to other databases for Georgbarsanovite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Georgbarsanovite

Na12(Mn,Sr,REE)3Ca6Fe++3Zr3NbSi25O76Cl2•H2O
Dana No: 64.01.01.17 Strunz No: 09.CO.10
Locality:

Notes: