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Tantalite-(Fe) (Tantalit-(Fe))

Pictures (8 Images total)

Tantalit-(Fe)
Views (File:
1266886010
): 4133
Tantalit-(Fe)
Linopolis, Laranjeiras, Doce-Tal, Minas Gerais, Brasilien;
Größe: 58 x 49 x 28 mm;
Copyright: Rob Lavinsky; Contribution: Philip Blümner
Location: Brasilien/Südosten (Região Sudeste)/Minas Gerais/Doce-Tal/Galiléia/Laranjeiras/Linópolis (Linopolis)
Mineral: Tantalite-(Fe)
Image: 1266886010
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Tantalit-(Fe)

Linopolis, Laranjeiras, Doce-Tal, Minas Gerais, Brasilien;
Größe: 58 x 49 x 28 mm;
Copyright: Rob Lavinsky
Contribution: Philip Blümner 2010-02-23
Locality: Linópolis (Linopolis) / Laranjeiras / Galiléia / Doce-Tal / Minas Gerais / Südosten (Região Sudeste) / Brasilien
Tantalit-(Fe), Cookeit
Views (File:
1295778281
): 4563
Tantalit-(Fe), Cookeit
Tantalit-(Fe)-Kristalle, am Fuße weißer Cookeit; Größe: 45x38x32 mm; Fundort: Ognevka, Kalbagebirge, Ostkasachstan; Ex Wolfgang Henkel Sammlung
Copyright: Dan Weinrich; Contribution: Philip Blümner
Location: Kasachstan/Schyghys Qasaqstan oblysy (Ostkasachstan)/Belogorski/Kalba/Ognevka
Mineral: Cookeite, Tantalite-(Fe)
Image: 1295778281
Rating: 8 (votes: 1)
License: Usage for Mineralienatlas project only
Tantalit-(Fe), Cookeit

Tantalit-(Fe)-Kristalle, am Fuße weißer Cookeit; Größe: 45x38x32 mm; Fundort: Ognevka, Kalbagebirge, Ostkasachstan; Ex Wolfgang Henkel Sammlung
Copyright: Dan Weinrich
Contribution: Philip Blümner 2011-01-23
Locality: Ognevka / Kalba / Belogorski / Schyghys Qasaqstan oblysy (Ostkasachstan) / Kasachstan
Stibiotantalit, Tantalit-(Fe)
Views (File:
1324315864
): 2681
Stibiotantalit, Tantalit-(Fe)
Stibiotantalitkristalle mit gelbem Tantalit-Fe;
Größe: 30x20x10 mm;
Fundort: Cryo-Genie Mine, Warner Springs, Warner Springs District, San Diego Co., Kalifornien, USA
Copyright: Rob Lavinsky; Contribution: Philip Blümner
Location: USA/Kalifornien (California)/San Diego Co./Warner Springs District/Warner Springs/Cryo-Genie Mine
Mineral: Stibiotantalite, Tantalite-(Fe)
Image: 1324315864
Rating: 8 (votes: 1)
License: Usage for Mineralienatlas project only
Stibiotantalit, Tantalit-(Fe)

Stibiotantalitkristalle mit gelbem Tantalit-Fe;
Größe: 30x20x10 mm;
Fundort: Cryo-Genie Mine, Warner Springs, Warner Springs District, San Diego Co., Kalifornien, USA
Copyright: Rob Lavinsky
Contribution: Philip Blümner 2011-12-19
Locality: Cryo-Genie Mine / Warner Springs / Warner Springs District / San Diego Co. / Kalifornien (California) / USA
Tantalit - (Fe)
Views (File:
1586433509
): 466, Rating: 6
Tantalit - (Fe)
Tantalit - (Fe); Aldeia Nova,Portugal; 2 cm lang
Copyright: Rockhounder; Contribution: Rockhounder
Collection: Rockhounder
Location: Portugal/Viseu, Distrikt/Sátão/Ferreira de Aves/Aldeia Nova
Mineral: Tantalite-(Fe)
Image: 1586433509
Rating: 6 (votes: 6)
License: Usage for Mineralienatlas project only
Tantalit - (Fe)

Tantalit - (Fe); Aldeia Nova,Portugal; 2 cm lang
Collection: Rockhounder
Copyright: Rockhounder
Contribution: Rockhounder 2020-04-09
Locality: Aldeia Nova / Ferreira de Aves / Sátão / Viseu, Distrikt / Portugal
Tantalit-(Fe)
Views (File:
1356209872
): 1601
Tantalit-(Fe)
Blockige schwarze Kristalle, BB = 3,8mm, Fundort: Uis, Damaraland, Namibia.
Copyright: Bebo; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A012969, Donator: Manfred Seitz
Location: Namibia/Erongo, Region/Dâures, Kreis/Uis (Groot Uis)/Uis Pegmatitgürtel
Mineral: Tantalite-(Fe)
Image: 1356209872
Rating: 5 (votes: 1)
License: Usage for Mineralienatlas project only
Tantalit-(Fe) (SNr: A012969)

Blockige schwarze Kristalle, BB = 3,8mm, Fundort: Uis, Damaraland, Namibia.
Collection: Lithothek der Münchener Micromounter
Copyright: Bebo
Contribution: Münchener Micromounter 2012-12-22
Locality: Uis Pegmatitgürtel / Uis (Groot Uis) / Dâures, Kreis / Erongo, Region / Namibia

You find additional specimen at the Geolitho Museum

Collectors Summary

Color bräunlichschwarz, schwarz
Streak color schwarz braun
Hardness (Mohs) 6.25
Solubility - Säuren
Crystal System orthorhombisch, Pbcn

Chemism

Chemical formula

Fe2+Ta2O6

Chemical composition

Eisen, Tantal, Sauerstoff

Unit weight: 513.7376 u; Number of atoms in the formula: 9

Info

Empirical formula:

FeTa2O6

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

18.69

6

66.67

15.9994300

95.9965800
Iron

Fe

10.87

1

11.11

55.8452000

55.8452000
Tantalum

Ta

70.44

2

22.22

180.9479100

361.8958200

Analysis wt%

Ta2O5 : 62.40, Nb2O5 : 20.40, TiO2 : 0.80, Fe2O3 : 0.40, FeO : 10.80, MnO : 4.80 (Ref: Neues Jahrbuch für Mineralogie, (Monatshefte) 89)

Strunz 9th edition incl. updates

4.DB.35

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
D: Metall: Sauerstoff = 1:2 und vergleichbare
B: Mit mittelgroßen [Kationen]: Ketten kantenverknüpfter Oktaeder
35:Columbit-Gruppe

Lapis Classification

IV/D.18-050

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

Classification by Hölzel

4.DI.100

4: OXIDES
D: Dioxides
I: Columbite-Group

IMA status

Vererbt, anerkannt vor 1959 (pre IMA)

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Columbite supergroup  ⇒ Columbite group

Optical Properties

Color

bräunlichschwarz, schwarz

Streak color

schwarz braun

Diaphaneity (Transparency)

opak

RI value α / ω / n

2.30

Ri mean

2.300

2V angle

Biaxial (+) nd

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mmm

Space Group number

60

Space Group

Pbcn

Cell parameters a (Å)

14.238

Cell parameters b (Å)

5.730

Cell parameters c (Å)

5.082

Cell parameters a/b or c/a

2.485

Cell parameters c/b

0.887

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

4

Volume (ų)

414.609

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

6.25

VHN (Hardness Vickers)

850 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

8.2

8.23 ( ρ calc. Mineralienatlas )

Instability

- Säuren

(Co-)Type locality

(Co-)Type locality

USA/South Dakota/Lawrence Co./Upper Bear Gulch

Preface

Author (Name, Year)

Thomson, 1836

References

Handbook of Mineralogy (Anthony et al.), 3 (1997), 193

Tidying up mineral names: an IMA-CNMNC scheme for suffixes, hyphens and diacritical marks: Mineral. Record, 39 (2008), 131-135

IMA group assignments

 
Columbite supergroup
 
 
 

 
 
Columbite group
 
orthorhombisch
Pbcn

 
 
 
Columbite-(Fe)
Fe2+Nb2O6
orthorhombisch
Pbcn

 
 
 
Columbite-(Mg)
MgNb2O6
orthorhombisch
Pbcn

 
 
 
Columbite-(Mn)
Mn2+Nb2O6
orthorhombisch
Pbcn

 
 
 
Qitianlingite
(Fe2+,Mn)2(Nb,Ta)2W6+O10
orthorhombisch
Pbcn

 
 
 
Tantalite-(Fe)
Fe2+Ta2O6
orthorhombisch
Pbcn

 
 
 
Tantalite-(Mg)
(Mg,Fe2+)(Ta,Nb)2O6
orthorhombisch
Pbcn

 
 
 
Tantalite-(Mn)
MnTa2O6
orthorhombisch
Pbcn

Refresh list

Actuality: 08. Jan 2025 - 01:51:08

Other languages

German

Tantalit-(Fe)

Spanish

Tantalita-(Fe)

English

Tantalite-(Fe)

Japanese

鉄ﾀﾝﾀﾙ石

Traditional Chinese

鉭鐵礦

Simplified Chinese

钽铁矿

old name

German

Ferrotantalit

Spanish

Ferrotantalita

English

Ferrotantalite

French

Ferrotantalite

Alternative Name

Siderotantal

CNMNC symbol

Symbol

Ttl-Fe

Locations with GPS information

IDs

GUSID (Global unique identifier short form) e54P5t6l4EuJeIYfKPgRXQ
GUID (Global unique identifier) E60F9E7B-A5DE-4BE0-8978-861F28F8115D
Database ID 1203