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Taseqite Mineral Data

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General Taseqite Information

Help on Chemical  Formula: Chemical Formula: Na12Sr3Ca6Fe3Zr3NbSi25O73(O,OH,H2O)3Cl2
Help on Composition: Composition: Molecular Weight = 3,403.45 gm
   Potassium   0.20 %  K     0.24 % K2O
   Sodium      5.95 %  Na    8.02 % Na2O
   Strontium  12.31 %  Sr   14.55 % SrO
   Calcium     6.09 %  Ca    8.52 % CaO
   Cerium      0.08 %  Ce    0.10 % Ce2O3
   Yttrium     0.24 %  Y     0.30 % Y2O3
   Hafnium     0.26 %  Hf    0.31 % HfO2
   Zirconium   7.61 %  Zr   10.28 % ZrO2
   Tantalum    0.21 %  Ta    0.26 % Ta2O5
   Manganese   2.44 %  Mn    3.15 % MnO
   Niobium     3.19 %  Nb    4.57 % Nb2O5
   Iron        3.17 %  Fe    4.07 % FeO
   Silicon    20.26 %  Si   43.34 % SiO2
   Tin         0.10 %  Sn    0.13 % SnO2
   Hydrogen    0.07 %  H     0.61 % H2O
   Chlorine    1.99 %  Cl    1.99 % Cl
                -   %   Cl   -0.45 % -O=Cl2   
   Oxygen     35.84 %  O
             ______        ______ 
             100.00 %       99.99 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na8.81Sr4.78K0.17Ce0.02Ca5.17Mn2+0.59Y0.09Fe2+1.93Mn2+0.92Zr2.84Nb0.11Hf0.05Nb1.06 Ta0.04Sn0.03Si24.55O74.65(OH)0.75(OH)0.09
Help on Environment: Environment: Occurs in a cavity in a late-stage hydrothermal albitite vein in the Il�maussaq alkaline complex. (Eudialyte group, predominance of Sr in N(4) and Nb in M(3); structure determined).
Help on IMA Status: IMA Status: Approved IMA 2002 (Dana # Added)
Help on Locality: Locality: Il�maussaq alkaline complex, South Greenland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the northern part of the complex, at theTaseq slope.
Help on Synonym: Synonym: IMA2002-055
 

Taseqite Image

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  Taseqite

Comments: Crystalline magenta-colored taseqite in matrix.
Location: Kukisvumchorr Mt, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Picture Size 0.3 cm.
© Jeff Weissman / Photographic Guide to Mineral Species

Taseqite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:2.09925
Help on Cell Dimensions: Cell Dimensions: a = 14.286, c = 29.99, Z = 3; V = 5,300.64 Den(Calc)= 3.20
Help on Crystal System: Crystal System: Trigonal - Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.86(1)(404), 2.98(1)(315), 3.43(0.9)(131,223),9.51(0.9)(012), 3.19(0.8)(208), 11.49(0.5)(101),
 

Physical Properties of Taseqite

Help on Cleavage: Cleavage: {001} Fair
Help on Color: Color: Clove brown, Yellowish brown, Lemon yellow.
Help on Density: Density: 3.24
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: light brownish white
 

Optical Properties of Taseqite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.02 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.007 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2011,KPDmeas= 0.1986,KC= 0.2026
Ncalc = 1.65 - 1.66
Help on Optical Data: Optical Data: Uniaxial (-), e=1.6378, w=1.6494, bire=0.0116.
 

Calculated Properties of Taseqite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.08 gm/cc
note: Specific Gravity of Taseqite =3.20 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PETaseqite = 37.74 barns/electron
U=PETaseqite x relectron= 116.08 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 87.15 (Gamma Ray American Petroleum Institute Units)
Concentration of Taseqite per GRapi unit = 1.15 (%)

Estimated Radioactivity from Taseqite - barely detectable

 

Taseqite Classification

Help on  Dana Class: Dana Class: 64.01.01.11 (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
Help on  Strunz Class: 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 Taseqite Information

Help on References: References: NAME( AmMin, 89:1831) PHYS. PROP.(AmMin, 89:1831) OPTIC PROP.(AmMin, 89:1831)
Help on See Also: See Also: Links to other databases for Taseqite :
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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Taseqite

Na12Sr3Ca6Fe3Zr3NbSi25O73(O,OH,H2O)3Cl2
Dana No: 64.01.01.11 Strunz No: 09.CO.10
Locality:

 

Notes:

 

 
   
 


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