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Quadruphite-VIII Mineral Data

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General Quadruphite-VIII Information

Help on Chemical  Formula: Chemical Formula: Na14CaMgTi4(Si2O7)2(PO4)4O4F2
Help on Composition: Composition: Molecular Weight = 1,395.97 gm
   Sodium      23.06 %  Na   31.08 % Na2O
   Calcium      2.87 %  Ca    4.02 % CaO
   Magnesium    1.74 %  Mg    2.89 % MgO
   Titanium    13.72 %  Ti   22.89 % TiO2
   Silicon      8.05 %  Si   17.22 % SiO2
   Phosphorus   8.88 %  P    20.34 % P2O5
   Oxygen      38.97 %  O
   Fluorine     2.72 %  F     2.72 % F
                 -   %   F    -1.15 % -O=F2    
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na14CaMgTi4(Si2O7)2(PO4)4O4F2
Help on IMA Status: IMA Status: Approved IMA 1992
Help on Locality: Locality: Mt. Alluaiv in the NW part of the Lovozero alkaline massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the Latin "quadruplex" and the element phosphorus, for the quantity of PO4 groups in the formula.
Help on Name Pronunciation: Name Pronunciation: Quadruphite-VIII + Pronunciation Say QUADRUPHITE-VIII
Help on Synonym: Synonym: IMA1990-026
 

Quadruphite-VIII Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.7647:1:2.8724
Help on Cell Dimensions: Cell Dimensions: a = 5.415, b = 7.081, c = 20.34, Z = 1; alpha = 86.85°, beta = 94.4°, gamma = 89.94° V = 776.44 Den(Calc)= 2.99
Help on Crystal System: Crystal System: Triclinic - Pedial H-M Symbol (1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.88(1), 2.702(0.8), 2.636(0.7),
 

Physical Properties of Quadruphite-VIII

Help on Color: Color: Brown.
Help on Density: Density: 3.12
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Hardness: Hardness: 5 - Apatite
Help on Luster: Luster: Vitreous - Resinous
 

Optical Properties of Quadruphite-VIII

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.098 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.059 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2235,KPDmeas= 0.2142,KC= 0.2375
Ncalc = 1.71 - 1.74
Help on Optical Data: Optical Data: Biaxial (-), a=1.63, b=1.678, g=1.697, bire=0.0670
 

Calculated Properties of Quadruphite-VIII

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.91 gm/cc
note: Specific Gravity of Quadruphite-VIII =2.99 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEQuadruphite-VIII = 3.76 barns/electron
U=PEQuadruphite-VIII x rElectron Density= 10.94 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Quadruphite-VIII is Not Radioactive
 

Quadruphite-VIII Classification

Help on  Dana Class: Dana Class: 56.04.01.03 (56)Sorosilicate Si2O7 Groups and O, OH, F. and H2O
  (56.04)with [Si2O7] with phosphate, water
  (56.04.01)Lomonosovite group
 
56.04.01.01 Lomonosovite Na5Ti2O2(Si2O7)(PO4) P1 1
 
56.04.01.02 Polyphite-VIII Na17Ca3Mg(Ti,Mn)4[Si2O7]2(PO4)6O2F6 P1 1
 
56.04.01.03 Quadruphite-VIII Na14CaMgTi4(Si2O7)2(PO4)4O4F2 P1 1
 
56.04.01.04 Sobolevite Na11(Na,Ca)4(Mg,Mn)Ti4(Si4O12)(PO4)4O5F3 P1 1
Help on  Strunz Class: Strunz Class: 09.BE.45 09 - SILICATES (Germanates)
  09.B - Sorosilicates
  09.BE -Si2O7 groups with additional anions;
 
09.BE.45 Quadruphite-VII Na14CaMgTi4[Si2O7]2(PO4)4O4F2 P1 1
 
09.BE.45 Quadruphite-VIII Na14CaMgTi4(Si2O7)2(PO4)4O4F2 P1 1
 
09.BE.45 Polyphite-VII Na17Ca3Mg(Ti,Mn)4[Si2O7]2(PO4)6O2F6 P1 1
 

Other Quadruphite-VIII Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.78,p1316,1993) OPTIC PROP.(Am.Min.,Vol.78,p1316,1993)
Help on See Also: See Also: Links to other databases for Quadruphite-VIII :
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 Quadruphite-VIII Specimen Label here :

Quadruphite-VIII

Na14CaMgTi4(Si2O7)2(PO4)4O4F2
Dana No: 56.04.01.03 Strunz No: 09.BE.45
Locality:

 

Notes:

 

 
   
 


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