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Bismutocolumbite

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Formula:
Bi(Nb,Ta)O4
Colour:
Black; brown in transmitted light
Lustre:
Sub-Metallic
Hardness:
Specific Gravity:
7.17
Crystal System:
Orthorhombic
Name:
For the bismuth in its composition and its relation to the minerals of the columbite-tantalite series.
This page provides mineralogical data about Bismutocolumbite.


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Classification of BismutocolumbiteHide

Approved
4.DE.30

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
E : With medium-sized cations; with various polyhedra
8.1.6.4

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
1 : ABO4

Physical Properties of BismutocolumbiteHide

Sub-Metallic
Colour:
Black; brown in transmitted light
Streak:
Brown to pale yellow
Hardness:
5½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
on {010}
Fracture:
Conchoidal
Density:
7.17 g/cm3 (Measured)    7.66 g/cm3 (Calculated)

Optical Data of BismutocolumbiteHide

Type:
Biaxial (+)
RI values:
nα = 2.380 nβ = 2.420 nγ = 2.470
2V:
Calculated: 85°
Max Birefringence:
δ = 0.090
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
Relatively strong

Chemical Properties of BismutocolumbiteHide

Formula:
Bi(Nb,Ta)O4
IMA Formula:
BiNbO4
Common Impurities:
Pb,Sb,Sn,Ti

Crystallography of BismutocolumbiteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Cell Parameters:
a = 4.992 Å, b = 5.677 Å, c = 11.731 Å
Ratio:
a:b:c = 0.879 : 1 : 2.066
Unit Cell V:
332.45 ų (Calculated from Unit Cell)
Z:
4

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.164 (100)
2.934 (90)
1.734 (80)
2.842 (45)
2.495 (45)
1.769 (45)
1.899 (40)
Comments:
Recorded on type material

Type Occurrence of BismutocolumbiteHide

General Appearance of Type Material:
Prismatic crystals to 2 mm, striated parallel to their elongation
Place of Conservation of Type Material:
A. E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia
Geological Setting of Type Material:
In a pegmatite
Associated Minerals at Type Locality:

Synonyms of BismutocolumbiteHide

Other Language Names for BismutocolumbiteHide

Relationship of Bismutocolumbite to other SpeciesHide

Other Members of this group:
BismutotantaliteBi(Ta,Nb)O4Orth.
CervantiteSb3+Sb5+O4Orth.
ClinocervantiteSb3+Sb5+O4Mon.
StibiocolumbiteSb(Nb,Ta)O4Orth. mm2
StibiotantaliteSb(Ta,Nb)O4Orth. mm2

Common AssociatesHide

Associated Minerals Based on Photo Data:
Albite8 photos of Bismutocolumbite associated with Albite on mindat.org.
Elbaite8 photos of Bismutocolumbite associated with Elbaite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

4.DE.05DowneyiteSeO2Tet.
4.DE.10Koragoite(Mn2+,Fe3+)3(Nb,Ta,Ti)2(Nb,Mn)2(W,Ta)2O20Mon. 2 : P21
4.DE.15KoechliniteBi2MoO6Orth. mm2 : Pna21
4.DE.15RusselliteBi2WO6Orth.
4.DE.15TungstibiteSb3+2WO6Orth. 2 2 2
4.DE.20TelluriteTeO2Orth. mmm (2/m 2/m 2/m)
4.DE.25ParatelluriteTeO2Tet.
4.DE.30BismutotantaliteBi(Ta,Nb)O4Orth.
4.DE.30CervantiteSb3+Sb5+O4Orth.
4.DE.30StibiotantaliteSb(Ta,Nb)O4Orth. mm2
4.DE.30StibiocolumbiteSb(Nb,Ta)O4Orth. mm2
4.DE.30ClinocervantiteSb3+Sb5+O4Mon.
4.DE.35BaddeleyiteZrO2Mon. 2/m : P21/b

Related Minerals - Dana Grouping (8th Ed.)Hide

8.1.6.1StibiocolumbiteSb(Nb,Ta)O4Orth. mm2
8.1.6.2StibiotantaliteSb(Ta,Nb)O4Orth. mm2
8.1.6.3BismutotantaliteBi(Ta,Nb)O4Orth.

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for BismutocolumbiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Peretazhko, I. S., Zagorskiy, V. E., Sapozhnikov, A. N., Bobrov, Y. D. and Rakcheev, A. D. (1992) Bismutocolumbite Bi(Nb,Ta)O4 - a new mineral from miarolitic pegmatites. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva 121(3), 130-134 (in Russian). - Mineralogical Abstracts (1994), 45, 111 (abstract). - American Mineralogist (1994), 79, 570 (abstract).
Anthony, J. W. et al. (1997) Handbook of Mineralogy, Vol. 3, 62.
Zubkova, N. V., Puscharovsky, D. Y., Giester, G., Smolin, A. S., Tillmanns, E., Brandstätter, F., Hammer, V., Peretazhko, I. S., Sapozhnikov, A. N. and Kashaev, A. A. (2002) Bismutocolumbite, Bi(Nb0.79Ta0.21)O4, stibiocolumbite, Sb(Nb0.67Ta0.33)O4, and their structural relation to the other ABO4 minerals with stibiotantalite (SbTaO4) structure. Neues Jahrbuch für Mineralogie, Monatshefte, 145-159.

Internet Links for BismutocolumbiteHide

Localities for BismutocolumbiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Italy
 
  • Lombardy
    • Brescia Province
      • Camonica Valley
        • Adamello-Brenta Natural Park
          • Adamello Massif
            • Mt. Foppa
Pezzotta, Federico and Guastoni, Alessandro, The New Discovery of a LCT Pegmatite in the Adamello Massif, Central Southern Alps, Italy; Museo Civico di Storia Naturale, Milan, Italy.
Russia
 
  • Eastern-Siberian Region
    • Transbaikalia (Zabaykalye)
      • Chitinskaya Oblast'
        • Krasnyi Chikoy
Fialova, D., Kremplova, M., Hynek, D., Konecna, M., Kaiser, J., Malina, R., ... & Adam, V. (2013). Sosedka Pegmatite Metal Ions Composition Determined by Voltammetry. Int. J. Electrochem. Sci, 8, 7853-7867.
[Lapis 1993:1 p13-15; ZVMO,(1992) 121, n3, 130-134]; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Mineral and/or Locality  
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