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Paratsepinite-Na Mineral Data

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General Paratsepinite-Na Information

Help on Chemical  Formula: Chemical Formula: (Na,Sr,K,Ca)7(Ti,Nb)8[Si4O12]4(O,OH)8•n(H2O) n ~ 8
Help on Composition: Composition: Molecular Weight = 2,286.52 gm
   Potassium   1.20 %  K     1.44 % K2O
   Sodium      4.22 %  Na    5.69 % Na2O
   Strontium   8.05 %  Sr    9.52 % SrO
   Calcium     0.61 %  Ca    0.86 % CaO
   Titanium   12.56 %  Ti   20.96 % TiO2
   Niobium     8.13 %  Nb   11.63 % Nb2O5
   Silicon    19.65 %  Si   42.04 % SiO2
   Hydrogen    0.79 %  H     7.09 % H2O
   Oxygen     44.78 %  O
             ______        ______ 
             100.00 %       99.23 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: 7(Na0.6)7(Sr0.3)7(K0.1)7(Ca0.05)8(Ti0.75)8(Nb0.25)4(Si4)4(O12)O6(OH)2�8(H2O)
Help on Environment: Environment: Labuntsovite group
Help on IMA Status: IMA Status: Proposed IMA 2003 (Dana # Added)
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Commission on New Minerals, Nomenclature and Classification (CNMNC)
Help on Synonym: Synonym: IMA2003-008

Paratsepinite-Na Image

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Comments: Colorless paratsepinite-Na crystals with associated red-brown labuntsovite.
Location: Mt. Khibinpakhchorr, Chibiny, Kola, Russia. Scale: Picture size 3 x 5 mm.
© Diederik Visser

Paratsepinite-Na Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.0243:1:1.1124
Help on Cell Dimensions: Cell Dimensions: a = 14.596, b = 14.249, c = 15.852, Z = 3; beta = 117.27° V = 2,930.45 Den(Calc)= 3.89
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): 7.09(1), 3.24(0.9), 3.11(0.8),3.15(0.8), 2.491(0.7), 2.54(0.7),

Physical Properties of Paratsepinite-Na

Help on Color: Color: Colorless.
Help on Diaphaneity: Diaphaneity: Transparent
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Paratsepinite-Na

Help on Gladstone-Dale: Gladstone-Dale: CI calc= 0.297 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1789,KC= 0.2543
Ncalc = 1.99
Help on Optical Data: Optical Data: Biaxial (+), a=1.657, b=1.666, g=1.765, bire=0.1080

Calculated Properties of Paratsepinite-Na

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.79 gm/cc
note: Specific Gravity of Paratsepinite-Na =3.89 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PEParatsepinite-Na = 23.63 barns/electron
U=PEParatsepinite-Na x relectron= 89.58 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 16.85 (Gamma Ray American Petroleum Institute Units)
Concentration of Paratsepinite-Na per GRapi unit = 5.94 (%)

Estimated Radioactivity from Paratsepinite-Na - barely detectable


Paratsepinite-Na Classification

Help on  Dana Class: Dana Class: 60.01.03e.04 (60)Cyclosilicate Four-Membered Rings
  (60.01)as Titanosilicates
  (60.01.03e)Labuntsovite Group (Labuntsovite subgroup Monoclinic [C2/m])
60.01.03e.01 Labuntsovite-Mn! Na4K4(Ba,K)(Mn,Fe)1x(Ti,Nb)8[Si4O12]4(O,OH)8•n(H2O),n=10-12 I2/m 2/m
60.01.03e.02 Labuntsovite-Mg! Na4K4(Ba,K)(Mg,Fe)1xTi8(Si4O12)4(O,OH)8•10(H2O) C 2/m 2/m
60.01.03e.03 Labuntsovite-Fe! Na4K4(Ba,K)2(Fe,Mg,Mn)1xTi8(Si4O12)4(O,OH)8•10(H2O) C 2/m 2/m
60.01.03e.04 Paratsepinite-Na! (Na,Sr,K,Ca)7(Ti,Nb)8[Si4O12]4(O,OH)8•n(H2O)n~8 C 2/m 2/m
60.01.03e.05 Gjerdingenite-Mn! (K,Na)2(Mn,Fe)(Nb,Ti)4(Si4O12)2(O,OH)4•6(H2O) C 2/m 2/m
60.01.03e.06 Gjerdingenite-Fe! K2[(H2O)2(Fe,Mn)][(Nb,Ti)4(Si4O12)2(O,OH)4]•4(H2O) C 2/m 2/m
60.01.03e.07 Gjerdingenite-Ca! K2Ca(Nb,Ti)4(Si4O12)2(O,OH)4•6H2O C 2/m 2/m
60.01.03e.08 Gjerdingenite-Na! (K,Na)2Na(Nb,Ti)4(Si4O12)2(OH,O)4•5H2O C 2/m 2/m
Help on  Strunz Class: Strunz Class: 09.CE.30i 09 - SILICATES (Germanates)
  09.C - Cyclosilicates
  09.CE -[Si4O12]8- 4-membered single rings (vierer-Einfachringe),
09.CE.30i Paratsepinite-Na! (Na,Sr,K,Ca)7(Ti,Nb)8[Si4O12]4(O,OH)8•n(H2O)n~8 C 2/m 2/m
09.CE.30i Paratsepinite-Ba! (Ba,Na,K)2-x(Ti,Nb)2(Si4O12)(OH,O)2•4(H2O) C 2/m 2/m

Other Paratsepinite-Na Information

Help on See Also: See Also: Links to other databases for Paratsepinite-Na :
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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(Na,Sr,K,Ca)7(Ti,Nb)8[Si4O12]4(O,OH)8•n(H2O) n ~ 8
Dana No: 60.01.03e.04 Strunz No: 09.CE.30i





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