Mineralogy Database

Stibiocolumbite Mineral Data

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General Stibiocolumbite Information

Help on Chemical  Formula: Chemical Formula: SbNbO4
Help on Composition: Composition: Molecular Weight = 278.65 gm
   Niobium   33.34 %  Nb   47.70 % Nb2O5
   Antimony  43.69 %  Sb   55.18 % SbO2
   Oxygen    22.97 %  O
            ______        ______ 
            100.00 %      102.87 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: SbNbO4
Help on Environment: Environment: Accessory mineral in complex granite pegmatites.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1915
Help on Locality: Locality: Mesa Grande district, San Diego Co., California, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named from the Latin for antimony, STIBium, in its composition, and relation to columbite.
Help on Name Pronunciation: Name Pronunciation: Stibiocolumbite + Pronunciation Say STIBIOCOLUMBITE
Help on Synonym: Synonym: ICSD 20344
  PDF 16-907

Stibiocolumbite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.4178:1:0.4712
Help on Cell Dimensions: Cell Dimensions: a = 4.929, b = 11.797, c = 5.559, Z = 4; V = 323.24 Den(Calc)= 5.73
Help on Crystal System: Crystal System: Orthorhombic - Pyramidal H-M Symbol (mm2) Space Group: Pc21n
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.13(1), 2.947(0.3), 1.735(0.2),

Physical Properties of Stibiocolumbite

Help on Cleavage: Cleavage: {010} Indistinct, {100} Indistinct
Help on Color: Color: Brown, Brownish yellow, Greenish yellow, Reddish brown.
Help on Density: Density: 5.98
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Hardness: Hardness: 5.5 - Knife Blade
Help on Luster: Luster: Adamantine - Resinous
Help on Streak: Streak: brownish yellow

Optical Properties of Stibiocolumbite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.864 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.946 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2487,KPDmeas= 0.2383,KC= 0.1278
Ncalc = 1.73 - 1.76
Help on Optical Data: Optical Data: Biaxial (+), a=2.3977, b=2.419, g=2.4588, bire=0.0611, 2V(Calc)=74, 2V(Meas)=73.417.

Calculated Properties of Stibiocolumbite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.32 gm/cc
note: Specific Gravity of Stibiocolumbite =5.98 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0001102401
Boson Index = 0.9998897599
Help on Photoelectric: Photoelectric: PEStibiocolumbite = 197.32 barns/electron
U=PEStibiocolumbite x rElectron Density=1,050.19 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Stibiocolumbite is Not Radioactive

Stibiocolumbite Classification

Help on  Dana Class: Dana Class: (08)Multiple Oxides with Nb, Ta, and Ti
  (08.01)where A BO4
  (08.01.06)Stibiocolumbite Group Stibiocolumbite SbNbO4 Pc21n mm2 Stibiotantalite SbTaO4 Pc21n mm2 Bismutotantalite Bi(Ta,Nb)O4 Pcmn 2/m 2/m 2/m Bismutocolumbite Bi(Nb,Ta)O4 Pcnn 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 04.DE.30 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.D - Metal:Oxygen = 1:2 and similar
  04.DE -With medium-sized cations; with various polyhedra
04.DE.30 Cervantite SbSbO4 Pbn21 mm2
04.DE.30 Bismutotantalite Bi(Ta,Nb)O4 Pcmn 2/m 2/m 2/m
04.DE.30 Bismutocolumbite Bi(Nb,Ta)O4 Pcnn 2/m 2/m 2/m
04.DE.30 Clinocervantite! SbSbO4 C 2/c 2/m
04.DE.30 Stibiocolumbite SbNbO4 Pc21n mm2
04.DE.30 Stibiotantalite SbTaO4 Pc21n mm2

Other Stibiocolumbite Information

Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Stibiocolumbite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Dana No: Strunz No: 04.DE.30





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