Mineralogy Database

Vinogradovite Mineral Data

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General Vinogradovite Information

Help on Chemical  Formula: Chemical Formula: (Na,K)4Ti4(Si,Al)8O26•3(H2O,Na)
Help on Composition: Composition: Molecular Weight = 976.77 gm
   Potassium   1.20 %  K     1.45 % K2O
   Barium      1.41 %  Ba    1.57 % BaO
   Sodium      9.89 %  Na   13.33 % Na2O
   Titanium   18.14 %  Ti   30.26 % TiO2
   Niobium     0.95 %  Nb    1.36 % Nb2O5
   Aluminum    3.87 %  Al    7.31 % Al2O3
   Iron        1.14 %  Fe    1.63 % Fe2O3
   Silicon    18.98 %  Si   40.60 % SiO2
   Hydrogen    0.21 %  H     1.84 % H2O
   Oxygen     44.23 %  O
             ______        ______ 
             100.00 %       99.34 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na4.2K0.3Ba0.1Ti3.7Fe3+0.2Nb0.1Si6.6Al1.4O26�(H2O)
Help on Environment: Environment: Late-stage hydrothermal mineral in cavities and veins, and replacing Ti-bearing minerals, in alkalic pegmatites in differentiated alkalic massifs.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1956
Help on Locality: Locality: In the Khibiny and Lovozero massifs, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Alexander Pavlovich Vinogradov, Russian geochemist.
Help on Name Pronunciation: Name Pronunciation: Vinogradovite + Pronunciation Say VINOGRADOVITE

Vinogradovite Image

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Comments: Off-white scaly vinogradovite on matrix.
Location: Mont Saint Hilaire, Quebec, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Vinogradovite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.6249:1:2.8294
Help on Cell Dimensions: Cell Dimensions: a = 5.35, b = 8.56, c = 24.22, Z = 2; beta = 101° V = 1,088.80 Den(Calc)= 2.98
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: A2/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.28(1), 3.11(0.9), 6.2(0.8),

Physical Properties of Vinogradovite

Help on Cleavage: Cleavage: {010} Perfect
Help on Color: Color: Colorless, White.
Help on Density: Density: 2.878
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Bladed - Aggregates of thin lath-like crystals (e.g. kyanite).
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Pseudo Orthorhombic - Crystals show an orthorhombic shape.
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Vinogradovite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.003 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.031 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2555,KPDmeas= 0.2646,KC= 0.2637
Ncalc = 1.76 - 1.79
Help on Optical Data: Optical Data: Biaxial (-), a=1.691-1.745, b=1.769-1.773, g=1.773-1.818, bire=0.0730-0.0820, 2V(Calc)=24-80, 2V(Meas)=41-82.
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): brownish.
Help on Pleochroism (z): Pleochroism (z): brownish.

Calculated Properties of Vinogradovite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.81 gm/cc
note: Specific Gravity of Vinogradovite =2.88 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PEVinogradovite = 11.59 barns/electron
U=PEVinogradovite x relectron= 32.57 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 16.92 (Gamma Ray American Petroleum Institute Units)
Concentration of Vinogradovite per GRapi unit = 5.91 (%)

Estimated Radioactivity from Vinogradovite - barely detectable


Vinogradovite Classification

Help on  Dana Class: Dana Class: (68)Inosilicate Structures with Chains of More Than One Width
  (68.01)Dana Type
  (68.01.02)Dana Group Vinogradovite (Na,K)4Ti4(Si,Al)8O26•3(H2O,Na) A2/a 2/m 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 Vinogradovite Information

Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic2)
Help on See Also: See Also: Links to other databases for Vinogradovite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - EUROmin Project
6 - Ecole des Mines de Paris
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - MinDAT
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - QUT Mineral Atlas
16 - Ruff.Info

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Dana No: Strunz No: 09.DB.25





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