Labyrinthite Mineral Data

Labyrinthite Mineral Data

General Labyrinthite Information

Chemical Formula:

(Na,K,Sr)35Ca12Fe3Zr6TiSi51O144(O,OH,H2O)9Cl3

Composition:

Molecular Weight = 6,434.85 gm

Potassium 6.38 % K 7.69 % K₂O

Sodium 7.50 % Na 10.11 % Na₂O

Strontium 4.77 % Sr 5.64 % SrO

Calcium 7.47 % Ca 10.46 % CaO

Zirconium 8.51 % Zr 11.49 % ZrO₂

Titanium 0.74 % Ti 1.24 % TiO₂

Iron 2.60 % Fe 3.35 % FeO

Silicon 22.26 % Si 47.62 % SiO₂

Hydrogen 0.07 % H 0.63 % H₂O

Chlorine 1.65 % Cl 1.65 % Cl

- % Cl -0.37 % -O=Cl₂

Oxygen 38.04 % O

______ ______

100.00 % 99.50 % = TOTAL OXIDE

Empirical Formula:

Na₂₁K_10.5Sr_3.5Ca₁₂Fe²⁺₃Zr₆TiSi₅₁O₁₄₄O_5.4(OH)_2.7(H₂O)_0.9Cl₃

Environment:

Eudialyte group; structure determined

IMA Status:

Proposed IMA 2002 (Dana # Added)

Locality:

Link to MinDat.org Location Data.

Name Origin:

Commission on New Minerals and Mineral Names (CNMMN)

Synonym:

IMA2002-065

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Labyrinthite Crystallography

Axial Ratios:

a:c = 1:4.26525

Cell Dimensions:

a = 14.239, c = 60.733, Z = 3; V = 10,663.86 Den(Calc)= 3.01

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): 2.977(1), 2.853(0.88), 4.32(0.68),3.23(0.44), 3.55(0.39), 3.049(0.36), 5.7(0.34), 6.45(0.33),

Physical Properties of Labyrinthite

Color:

Pink.

Diaphaniety:

Transparent

Luster:

Vitreous (Glassy)

Optical Properties of Labyrinthite

Gladstone-Dale:

CI calc= 0.035 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.199,KC= 0.2062

Optical Data:

Uniaxial (+), w=1.597, e=1.601, bire=0.0040.

Calculated Properties of Labyrinthite

Electron Density:

r_electron=2.93 gm/cc
note: r_Labyrinthite=3.01 gm/cc.

Fermion Index

Fermion Index = 0.02508
Boson Index = 0.97492

Photoelectric:

PE_Labyrinthite= 19.95 barns/electron
U=PE_Labyrinthite x r_electron= 58.56 barns/cc.

Radioactivity:

GRapi = 89.75 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Labyrinthite - barely detectable

Labyrinthite Classification

Dana Class:

64.1.1.14 (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 Labyrinthite Information

See Also:

Links to other databases for Labyrinthite :
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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Labyrinthite

(Na,K,Sr)35Ca12Fe3Zr6TiSi51O144(O,OH,H2O)9Cl3
Dana No: 64.1.1.14 Strunz No: VIII/EX.00-00
Locality:

Notes: