Mineralogy Database

Ternovite Mineral Data

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General Ternovite Information

Help on Chemical  Formula: Chemical Formula: (Mg,Ca)Nb4O11-n(H2O) where n ~ 10
Help on Composition: Composition: Molecular Weight = 756.81 gm
   Calcium     1.59 %  Ca    2.22 % CaO
   Magnesium   2.25 %  Mg    3.73 % MgO
   Niobium    49.10 %  Nb   70.24 % Nb2O5
   Hydrogen    2.66 %  H    23.80 % H2O
   Oxygen     44.40 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mg0.7Ca0.3Nb4O11•10(H2O)
Help on Environment: Environment: In hydrothermal alteration zones of carbonatites as encrustations with other later minerals on primary minerals. The Mg-dominant analogue of hochelagaite and franconite.
Help on IMA Status: IMA Status: Approved IMA 1997 (Dana # Added)
Help on Locality: Locality: The central part of the Vuoriyarvi massif on the north shore of Vuoriyarvi Lake, North Karelia, Kola peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after Vladimir Ivanovich Ternovoi (1928�1980), economic geologist, a pioneer in studies of the Kovdor phlogopite depost.
Help on Name Pronunciation: Name Pronunciation: Ternovite + Pronunciation Say TERNOVITE
Help on Synonym: Synonym: IMA1992-044

Ternovite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.5813:1:0.4852
Help on Cell Dimensions: Cell Dimensions: a = 20.656, b = 13.062, c = 6.338, Z = 4; beta = 90.917° V = 1,709.83 Den(Calc)= 2.94
Help on Crystal System: Crystal System: Monoclinic Space Group: P 2/m,P 2,Pm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 10.33(1), 3.15(0.17), 3.12(0.15),

Physical Properties of Ternovite

Help on Cleavage: Cleavage: None
Help on Color: Color: White.
Help on Density: Density: 2.95
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Habit: Habit: Spherical - Spherical, rounded aggregates.
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Adamantine - Silky
Help on Streak: Streak: white

Optical Properties of Ternovite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.036 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.033 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2721,KPDmeas= 0.2712,KC= 0.2813
Ncalc = 1.83
Help on Optical Data: Optical Data: Biaxial (-), a=1.725, b=1.83, g=1.845, bire=0.1200, 2V(Calc)=38, 2V(Meas)=39.5. Dispersion none.

Calculated Properties of Ternovite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.85 gm/cc
note: Specific Gravity of Ternovite =2.94 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0024865987
Boson Index = 0.9975134013
Help on Photoelectric: Photoelectric: PETernovite = 72.04 barns/electron
U=PETernovite x rElectron Density= 205.07 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Ternovite is Not Radioactive

Ternovite Classification

Help on  Dana Class: Dana Class: (08)Multiple Oxides with Nb, Ta, and Ti
  (08.06)Dana Type
  (08.06.01)Franconite Group Franconite Na2Nb4O11•9(H2O) Unk Mono Hochelagaite (Ca,Na,Sr)Nb4O11•8(H2O) Unk Mono Ternovite! (Mg,Ca)Nb4O11-n(H2O)wheren~10 P 2/m,P 2,Pm Mono
Help on  Strunz Class: Strunz Class: 04.FM.15 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.F - Hydroxides (without V or U)
  04.FM -Hydroxides with H2O � (OH); Unclassified
04.FM.15 Franconite Na2Nb4O11•9(H2O) Unk Mono
04.FM.15 Hochelagaite (Ca,Na,Sr)Nb4O11•8(H2O) Unk Mono
04.FM.15 Ternovite! (Mg,Ca)Nb4O11-n(H2O)wheren~10 P 2/m,P 2,Pm Mono

Other Ternovite Information

Help on References: References: NAME( CanMin, 8/99) PHYS. PROP.(Am.Min.,Vol.83,p187,1998) OPTIC PROP.(MinRec)
Help on See Also: See Also: Links to other databases for Ternovite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Print or Cut-and-Paste your Ternovite Specimen Label here :


(Mg,Ca)Nb4O11-n(H2O) where n ~ 10
Dana No: Strunz No: 04.FM.15





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