Natroniobite Mineral Data

Natroniobite Mineral Data +

General Natroniobite Information

Chemical Formula:

NaNbO3

Composition:

Molecular Weight = 163.89 gm

Sodium 14.03 % Na 18.91 % Na₂O

Niobium 56.69 % Nb 81.09 % Nb₂O₅

Oxygen 29.29 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

NaNbO₃

Environment:

Dolomitic carbonatites.

IMA Status:

Approved IMA 1960

Locality:

Lesnaya Baraka and Sallanlatvi massifs, Kola Peninsula, Russa. Link to MinDat.org Location Data.

Name Origin:

Named for the composition.

Synonym:

ICSD 28565

PDF 26-1380

Natroniobite Image

Images:

Natroniobite

Comments: Olive-green colored translucent crystalline natroniobite fragments.
Location: Lesnaya Varaka Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Natroniobite Crystallography

Crystal System:

Monoclinic

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.97(1), 3.06(0.9), 1.6(0.8),

Physical Properties of Natroniobite

Color:

Yellow, Brownish, Blackish.

Density:

4.4

Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Hardness:

5.5-6 - Knife Blade-Orthoclase

Streak:

gray

Optical Properties of Natroniobite

Gladstone-Dale:

CI meas= -0.059 (Good) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.2682,KC= 0.2533

Optical Data:

Biaxial (+), a=2.1-2.13, b=2.19-2.21, g=2.21-2.24, bire=0.1100, 2V(Calc)=48-60, 2V(Meas)=10-30. Dispersion r < v.

Calculated Properties of Natroniobite

Electron Density:

r_electron=4.08 gm/cc
note: r_Natroniobite=4.40 gm/cc.

Fermion Index

Fermion Index = 0.00014
Boson Index = 0.99986

Photoelectric:

PE_Natroniobite= 86.63 barns/electron
U=PE_Natroniobite x r_electron= 353.50 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Natroniobite is Not Radioactive

Natroniobite Classification

Dana Class:

4.3.4.1 (4)Simple Oxides

(4.3)with a cation charge of 3+ (A+++2 O3)

(4.3.4)Dana Group

4.3.4.1 Natroniobite NaNbO3 Mono

Strunz Class:

IV/C.10-70 IV - Oxides

IV/C - Oxides with metal : oxygen = 2:3 (M2O3 and related compounds)

IV/C.10 - Perowskite series

IV/C.10-10 Uhligite Ca3(Ti,Al,Zr)9O20 Unk Cubic

IV/C.10-20 Perovskite CaTiO3 P nma 2/m 2/m 2/m

IV/C.10-30 Latrappite (Ca,Na)(Nb,Ti,Fe)O3 Pcmn 2/m 2/m 2/m

IV/C.10-40 Tausonite SrTiO3 P m3m 4/m 3 2/m

IV/C.10-50 Loparite-(Ce) (Ce,Na,Ca)2(Ti,Nb)2O6 P m3m 4/m 3 2/m

IV/C.10-55 Isolueshite! (Na,La,Ca)(Nb,Ti)O3 P m3m 4/m 3 2/m

IV/C.10-60 Lueshite NaNbO3 P 222₁ 2 2 2

IV/C.10-70 Natroniobite NaNbO3 Mono

IV/C.10-80 Macedonite PbTiO3 P 4/mmm 4/m 2/m 2/m

Other Natroniobite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Natroniobite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris

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Natroniobite

NaNbO3
Dana No: 4.3.4.1 Strunz No: IV/C.10-70
Locality:

Notes: