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Bismutocolumbite

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Bismutocolumbit
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Bismutocolumbit

schwarzer Bismutocolumbit neben rotem Turmalin auf Albit, Malkhan, Chita, Transbaikalien, Russland; BB 2 mm, analysiert

Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-01-24
Locality: Malkhan Pegmatitfeld (Malchansk; Малханского) / Tschita (Chita) / Transbaikalien, Region (Zabaykalsky Krai) / Sibirien, Föderationskreis / Russland

Collectors Summary

Color schwarz
Streak color gelblich braun
Hardness (Mohs) 5.5
Cleavages vollkommen {001}
Fracture muschelig
Crystal System orthorhombisch, Pcnn

Chemism

Chem­ical formula

Bi(Nb,Ta)O4

Chem­ical com­po­si­tion

Bismut, Niob, Tantal, Sauerstoff

Unit weight: 387.894866 u; Number of atoms in the formula: 6

Info

Empirical formula:

Bi(Nb0.75Ta0.25)O4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

16.50

4

66.67

15.9994300

63.9977200

Niobium

Nb

17.96

0.75

12.50

92.9063820

69.6797865

Tantalum

Ta

11.66

0.25

4.17

180.9479100

45.2369775

Bismuth

Bi

53.88

1

16.67

208.9803820

208.9803820

Anal­y­sis wt%

Ta2O5 : 11.67, Nb2O5 : 27.03, Bi2O3 : 59.85 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 92)

Strunz 9th edi­tion incl. updates

4.DE.30

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
D: Metall: Sauerstoff = 1:2 und vergleichbare
E: Mit mittelgroßen [Kationen]; Mit verschiedenen Polyedern
30:Stibiotantalit-Gruppe

Lapis Clas­sifica­tion

IV/D.25-035

IV: OXIDE
D: Oxide mit Verhältnis Metall : Sauerstoff = 1:2 (MO2 und verwandte Verbindungen)
25: Stibiotantalit-Gruppe

Clas­sifica­tion by Hölzel

4.DK.140

4: OXIDES
D: Dioxides
K: Other Niobates, Tantalates
1: Cervantite-Group

Dana 8th edi­tion

08.01.06.04

08: Multiple Oxides with Nb, Ta, and Ti
01: Multiple Oxides with Nb, Ta, and Ti where A BO4
06: Stibiocolumbite Group

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

schwarz

Streak color

gelblich braun

Diaphane­ity (Trans­parency)

teilweise durchscheinend bis opak

max. Birefrin­gence

0.09

Birefringence chart\! Bismutocolumbite title=Birefringence chart Bismutocolumbite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

2.38

RI value β

2.42

RI value γ / ε

2.47

Ri mean

2.423

2V angle

Biaxial (+) 85°

Crystallography

Crystal Sys­tem

orthorhombisch

Class (H-M)

mmm

Space Group number

52

Space Group

Pcnn

Cell param­e­ters a (Å)

4.992

Cell param­e­ters b (Å)

11.731

Cell param­e­ters c (Å)

5.677

Cell param­e­ters a/b or c/a

0.426

Cell param­e­ters c/b

0.484

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

332.452

X-Ray Pow­der Diffrac­tion

3.164(100),
2.934(90),
2.842(40),
2.495(40),
1.899(40),
1.871(40),
1.769(40),
1.734(80)

XRD chart Bismutocolumbite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

5.5

VHN (Hard­ness Vick­ers)

530 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

7.56

7.749 ( ρ calc. Mineralienatlas )

Cleav­ages

vollkommen {001}

Frac­ture

muschelig

Tenac­ity

spröde

Preface

Author (Name, Year)

Peretyazhko & Zagorskiy & Sapozhnikov & Bobrov & Rakcheev, 1992

References

Zapiski Vserossiskogo Mineralogicheskogo Obshchetstva 121 (1992) (3), 130

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Cervantite

Sb3+Sb5+O4

orthorhombisch : mm2 : Pna21

4.DE.30

Kyawthuite

Bi3+Sb5+O4

monoklin : 2/m : I2/c

4.DE.30

Stibiocolumbite

SbNbO4

orthorhombisch : mm2 : Pc21n

4.DE.30

Stibiotantalite

Sb3+TaO4

orthorhombisch : mm2 : Pc21n

4.DE.30

Bismutocolumbite

Bi(Nb,Ta)O4

orthorhombisch : mmm : Pcnn

4.DE.30

Bismutotantalite

Bi(Ta,Nb)O4

orthorhombisch : mmm : Pcnn

4.DE.30

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Clinocervantite

Sb3+Sb5+O4

monoklin : 2/m : C2/c

IV/D.25-005

Cervantite

Sb3+Sb5+O4

orthorhombisch : mm2 : Pna21

IV/D.25-010

Stibiocolumbite

SbNbO4

orthorhombisch : mm2 : Pc21n

IV/D.25-020

Stibiotantalite

Sb3+TaO4

orthorhombisch : mm2 : Pc21n

IV/D.25-030

Bismutocolumbite

Bi(Nb,Ta)O4

orthorhombisch : mmm : Pcnn

IV/D.25-035

Bismutotantalite

Bi(Ta,Nb)O4

orthorhombisch : mmm : Pcnn

IV/D.25-040

Chiluite

Bi3Te6+Mo6+O10.5

IV/D.25-070

Gelosaite

BiMo6+(2-5x)Mo5+6xO7(OH)·H2O {0≤x≤0.4}

monoklin : 2/m : P21/n

IV/D.25-075

Mambertiite

BiMo5+2.80O8(OH)

triklin : 1 : P1

IV/D.25-077

Sardignaite

BiMo2O7(OH)·2H2O

monoklin : 2/m : P21/m

IV/D.25-080

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Cervantite

Sb3+Sb5+O4

orthorhombisch : mm2 : Pna21

4.DK.100

Clinocervantite

Sb3+Sb5+O4

monoklin : 2/m : C2/c

4.DK.105

Stibiocolumbite

SbNbO4

orthorhombisch : mm2 : Pc21n

4.DK.110

Stibiotantalite

Sb3+TaO4

orthorhombisch : mm2 : Pc21n

4.DK.120

Bismutotantalite

Bi(Ta,Nb)O4

orthorhombisch : mmm : Pcnn

4.DK.130

Bismutocolumbite

Bi(Nb,Ta)O4

orthorhombisch : mmm : Pcnn

4.DK.140

Rosiaite

PbSb2O6

trigonal : 3m : P31m

4.DK.150

Alumotantite

AlTaO4

orthorhombisch : mmm : Pbcn

4.DK.160

Simpsonite

Al4Ta3O13(OH)

trigonal : 3 : P3

4.DK.180

Bahianite

Al5Sb5+3O14(OH)2

monoklin : 2/m : C2/m

4.DK.190

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Fergusonite-(Y)

YNbO4

tetragonal : 4/m : I41/a

08.01.01.01

Formanite-(Y)

YTaO4

monoklin : 2/m : P2/a

08.01.01.02

'Fergusonite-(Ce)'

CeNbO4

tetragonal : 4/m : I41/a

08.01.01.03

Yttrotantalite-(Y)

(Y,U,Fe2+)(Ta,Nb)(O,OH)4

08.01.03.01

'Yttrocolumbite-(Y)'

(Y,U,Fe2+)(Nb,Ta)O4

08.01.03.02

Ishikawaite

(U,Fe,Y)NbO4

08.01.04.01

Loranskite-(Y)

(Y,Ce,Ca)ZrTaO6

08.01.05.01

Stibiocolumbite

SbNbO4

orthorhombisch : mm2 : Pc21n

08.01.06.01

Stibiotantalite

Sb3+TaO4

orthorhombisch : mm2 : Pc21n

08.01.06.02

Bismutotantalite

Bi(Ta,Nb)O4

orthorhombisch : mmm : Pcnn

08.01.06.03

Bismutocolumbite

Bi(Nb,Ta)O4

orthorhombisch : mmm : Pcnn

08.01.06.04

Alumotantite

AlTaO4

orthorhombisch : mmm : Pbcn

08.01.07.01

Wodginite

Mn2+Sn4+Ta2O8

monoklin : 2/m : C2/c

08.01.08.01

Ferrowodginite

(Fe2+,Mn2+)(Sn,Ti,Fe3+,Ta)(Ta,Nb)2O8

monoklin : 2/m : C2/c

08.01.08.02

Titanowodginite

(Mn2+,Fe2+)(Ti,Sn,Ta,Sc)(Ta,Nb)2O8

monoklin : 2/m : C2/c

08.01.08.03

Lithiowodginite

(Li,Mn,Fe)(Ta,Nb,Sn)3O8

monoklin : 2/m : C2/c

08.01.08.04

Ferrotitanowodginite

(Fe2+,Mn2+)(Ti,Sn4+,Ta,Fe3+)(Ta,Nb)2O8

monoklin : 2/m : C2/c

08.01.08.05

Liandratite

U6+(Nb,Ta)2O8

trigonal : 3m : P31m

08.01.09.01

Petscheckite

U4+Fe2+Nb2O8

trigonal : 3m : P31m

08.01.09.02

IMA Number

IMA 1991-003

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Bismutocolumbit
Google-Bilder-Suche - search for: Bismutocolumbit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Bismutocolumbit

English pages

Mindat - search for: Bismutocolumbite
Webmineral - search for:Bismutocolumbite
Handbook-of-Mineralogy - search for: Bismutocolumbite
RRUFF - Raman, XRD and other mineral data - search for: Bismutocolumbite
RRUFF - References and PDF downloads - search for: Bismutocolumbite
American-Mineralogist-Crystal-Structure-Database - search for: Bismutocolumbite
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Russian pages

Webmineral.ru - search for: Висмутоколумбит

Mineral Dealer

German pages

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