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Paravinogradovite Mineral Data

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General Paravinogradovite Information

Help on Chemical  Formula: Chemical Formula: (Na,[ ])2(Ti,Fe+++)4(Si2O6)2(Si3AlO10)(OH)4•H2O
Help on Composition: Composition: Molecular Weight = 902.89 gm
   Potassium   0.74 %  K     0.89 % K2O
   Sodium      5.81 %  Na    7.83 % Na2O
   Magnesium   0.08 %  Mg    0.13 % MgO
   Titanium   17.87 %  Ti   29.81 % TiO2
   Beryllium   0.28 %  Be    0.78 % BeO
   Aluminum    3.26 %  Al    6.15 % Al2O3
   Iron        2.91 %  Fe    4.16 % Fe2O3
   Silicon    20.50 %  Si   43.85 % SiO2
   Hydrogen    0.70 %  H     6.27 % H2O
   Oxygen     47.86 %  O
             ______        ______ 
             100.00 %       99.87 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na2.28K0.17Ti3.37Fe3+0.47Mg0.03Si6.59Al1.09Be0.28O22(OH)3.74�1.27(H2O)
Help on Environment: Environment: Strongly mineralized nepheline-feldspar pegmatite. Related to vinogradovite; structure determined.
Help on IMA Status: IMA Status: Approved IMA 2003 (Dana # Added)
Help on Locality: Locality: Mount Kukisvumchorr, Khibina alkaline massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the relationship to vinogradovite.
Help on Synonym: Synonym: IMA2002-033
 

Paravinogradovite Image

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  Paravinogradovite

Comments: Aggregates of parallel tan colored acicular paravinogradovite crystals associated with zircon.
Location: Kukisvumchorr Mountain, Khibiny Massif, Kola Peninsula, Russia. Scale: See Image.
© Rruff Database

Paravinogradovite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.6009:1:1.4812
Help on Cell Dimensions: Cell Dimensions: a = 5.2533, b = 8.7411, c = 12.948, Z = 1; alpha = 70.47°, beta = 78.47°, gamma = 89.93° V = 549.05 Den(Calc)= 2.73
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): 3.182(1)(013,014), 5.88(0.65)(011,012), 11.9(0.58)(001),4.35(0.38)(021,102), 5.98(0.35)(002), 3.085(0.29)(123), 2.735(0.21)(122),
 

Physical Properties of Paravinogradovite

Help on Cleavage: Cleavage: {001} Perfect, {010} Indistinct
Help on Color: Color: White.
Help on Density: Density: 2.77
Help on Diaphaneity: Diaphaneity: Translucent to transparent
Help on Fracture: Fracture: Brittle - Splintery - Brittle fracture leaving splintery fragments.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 5 - Apatite
Help on Luminescence: Luminescence: Fluorescent, Short UV=week yellow green, Long UV=week yellow green.
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white
 

Optical Properties of Paravinogradovite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.033 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.023 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.268,KPDmeas= 0.2651,KC= 0.2743
Ncalc = 1.75 - 1.76
Help on Optical Data: Optical Data: Biaxial (-), a=1.707, b=1.741, g=1.755, bire=0.0480, 2V(Calc)=64, 2V(Meas)=64. Dispersion r > v.
 

Calculated Properties of Paravinogradovite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.70 gm/cc
note: Specific Gravity of Paravinogradovite =2.74 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PEParavinogradovite = 4.83 barns/electron
U=PEParavinogradovite x relectron= 13.05 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 10.47 (Gamma Ray American Petroleum Institute Units)
Concentration of Paravinogradovite per GRapi unit = 9.55 (%)

Estimated Radioactivity from Paravinogradovite - barely detectable

 

Paravinogradovite Classification

Help on  Dana Class: Dana Class: 68.01.02.02 (68)Inosilicate Structures with Chains of More Than One Width
  (68.01)Dana Type
  (68.01.02)Dana Group
 
68.01.02.01 Vinogradovite (Na,K)4Ti4(Si,Al)8O26•3(H2O,Na) A2/a 2/m
 
68.01.02.02 Paravinogradovite! (Na,[])2(Ti,Fe)4(Si2O6)2(Si3AlO10)(OH)4•H2O P1 1
Help on  Strunz Class: Strunz Class: 09.DB.25 09 - SILICATES (Germanates)
  09.D - Inosilicates* Structural terminology according to Liebau (1985)
  09.DB -Inosilicates with 2-periodic single chains, Si2O6; Pyroxene-related minerals
 
09.DB.25 Vinogradovite (Na,K)4Ti4(Si,Al)8O26•3(H2O,Na) A2/a 2/m
 
09.DB.25 Paravinogradovite! (Na,[])2(Ti,Fe)4(Si2O6)2(Si3AlO10)(OH)4•H2O P1 1
 

Other Paravinogradovite Information

Help on References: References: NAME( CanMin, v 41, p 989) PHYS. PROP.(CanMin, v 41, p 989) OPTIC PROP.(CanMin, v 41, p 989)
Help on See Also: See Also: Links to other databases for Paravinogradovite :
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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Paravinogradovite

(Na,[ ])2(Ti,Fe+++)4(Si2O6)2(Si3AlO10)(OH)4•H2O
Dana No: 68.01.02.02 Strunz No: 09.DB.25
Locality:

 

Notes:

 

 
   
 


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