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Burovaite-Ca Mineral Data

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General Burovaite-Ca Information

Help on Chemical  Formula: Chemical Formula: (K,Na)4Ca2(Ti,Nb)8[Si4O12]4(OH,O)8•12H2O
Help on Composition: Composition: Molecular Weight = 2,235.05 gm
   Potassium   1.87 %  K     2.25 % K2O
   Barium      0.25 %  Ba    0.27 % BaO
   Sodium      3.19 %  Na    4.30 % Na2O
   Strontium   0.16 %  Sr    0.19 % SrO
   Calcium     2.96 %  Ca    4.14 % CaO
   Tantalum    0.16 %  Ta    0.20 % Ta2O5
   Titanium   10.65 %  Ti   17.76 % TiO2
   Niobium    10.64 %  Nb   15.22 % Nb2O5
   Aluminum    0.08 %  Al    0.16 % Al2O3
   Zinc        0.03 %  Zn    0.04 % ZnO
   Iron        0.20 %  Fe    0.26 % FeO
   Silicon    20.02 %  Si   42.82 % SiO2
   Hydrogen    1.38 %  H    12.37 % H2O
   Oxygen     48.41 %  O
             ______        ______ 
             100.00 %       99.99 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na3.1K1.07Ca0.37Sr0.04Ba0.04Ca1.28Zn0.01Ti4.97Nb2.56Fe2+0.08Ta0.02Si15.93Al0.07O48 (OH)6.7O0.93�12(H2O)
Help on Environment: Environment: Labuntsovite group
Help on IMA Status: IMA Status: Approved IMA 2008 (Dana # Added)
Help on Locality: Locality: Khibinpakhchorr Mt., Khibiny massif, Kola Peninsula, Russia Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Commission on New Minerals, Nomenclature and Classification (CNMNC)
Help on Synonym: Synonym: IMA2008-001
 

Burovaite-Ca Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.0229:1:0.5561
Help on Cell Dimensions: Cell Dimensions: a = 14.529, b = 14.203, c = 7.899, Z = 2; beta = 117.37° V = 1,447.53 Den(Calc)= 5.13
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.25(1), 1.444(0.7), 1.577(0.7),1.712(0.7), 2.49(0.7), 3.11(0.7), 7.08(0.7), 2.61(0.5),
 

Optical Properties of Burovaite-Ca

Help on Optical Data: Optical Data: NCalc= 2.36 - from Gladstone-Dale relationship (KC = 0.2648) where Ncalc=Dcalc*KC+1
 

Calculated Properties of Burovaite-Ca

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.07 gm/cc
note: Specific Gravity of Burovaite-Ca =5.13 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEBurovaite-Ca = 21.28 barns/electron
U=PEBurovaite-Ca x relectron= 107.95 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 26.70 (Gamma Ray American Petroleum Institute Units)
Concentration of Burovaite-Ca per GRapi unit = 3.75 (%)

Estimated Radioactivity from Burovaite-Ca - barely detectable

 

Burovaite-Ca Classification

Help on  Dana Class: Dana Class: 59.00.00.00 (59)Cyclosilicate Minerals
  (59.00)Without Dana Classification Numbers
  (59.00.00)Silicate, Unclassified
 
59.00.00.00 Burovaite-Ca! (K,Na)4Ca2(Ti,Nb)8[Si4O12]4(OH,O)8•12H2O C 2/m 2/m
Help on  Strunz Class: Strunz Class: 09.CE.30c 09 - SILICATES (Germanates)
  09.C - Cyclosilicates
  09.CE -[Si4O12]8- 4-membered single rings (vierer-Einfachringe),
 
09.CE.30c Gjerdingenite-Mn! (K,Na)2(Mn,Fe)(Nb,Ti)4(Si4O12)2(O,OH)4•6(H2O) C 2/m 2/m
 
09.CE.30c Karupmollerite-Ca! (Na,Ca,K)2Ca(Nb,Ti)4(Si4O12)2(O,OH)4•7(H2O) C 2/m 2/m
 
09.CE.30c Kuzmenkoite-Zn! K2Zn(Ti,Nb)4(Si4O12)2(OH,O)4•6-8(H2O) Cm m
 
09.CE.30c Kuzmenkoite-Mn! (K,Na)2(Mn,Fe)(Ti,Nb)4[Si4O12]2(OH)4•5(H2O) C 2/m 2/m
 
09.CE.30c Gjerdingenite-Fe! K2[(H2O)2(Fe,Mn)][(Nb,Ti)4(Si4O12)2(O,OH)4]•4(H2O) C 2/m 2/m
 
09.CE.30c Lepkhenelmite-Zn! Ba2Zn(Ti,Nb)4(Si4O12)2(O,OH)4•7(H2O) Cm m
 
09.CE.30c Gjerdingenite-Ca! K2Ca(Nb,Ti)4(Si4O12)2(O,OH)4•6H2O C 2/m 2/m
 
09.CE.30c Gjerdingenite-Na! (K,Na)2Na(Nb,Ti)4(Si4O12)2(OH,O)4•5H2O C 2/m 2/m
 
09.CE.30c Burovaite-Ca! (K,Na)4Ca2(Ti,Nb)8[Si4O12]4(OH,O)8•12H2O C 2/m 2/m
 

Other Burovaite-Ca Information

Help on References: References: PHYS. PROP.(Proceedings of the Russian Min Soc, 2009:40)
Help on See Also: See Also: Links to other databases for Burovaite-Ca :
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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Print or Cut-and-Paste your Burovaite-Ca Specimen Label here :

Burovaite-Ca

(K,Na)4Ca2(Ti,Nb)8[Si4O12]4(OH,O)8•12H2O
Dana No: 59.00.00.00 Strunz No: 09.CE.30c
Locality:

 

Notes:

 

 
   
 


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