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Tantalite-(Mn)

Pictures (32 Images total)

Tantalit-(Mn)
Views (File:
1294642453
): 1252
Tantalit-(Mn)
Größe: 10 mm; Fundort: Alto Ligonha Pegmatite, Provinz Zambezia, Mosambik
Copyright: Martins da Pedra; Contribution: Philip Blümner
Location: Mosambik/Zambezia, Provinz/Alto Ligonha Pegmatite
Mineral: Tantalite-(Mn)
Image: 1294642453
Rating: 10 (votes: 1)
License: Usage for Mineralienatlas project only
Tantalit-(Mn)

Größe: 10 mm; Fundort: Alto Ligonha Pegmatite, Provinz Zambezia, Mosambik
Copyright: Martins da Pedra
Contribution: Philip Blümner 2011-01-10
Locality: Alto Ligonha Pegmatite / Zambezia, Provinz / Mosambik
Manganotantalit XX
Views (File:
1222291070
): 4708, Rating: 8.6
Manganotantalit XX
Fundort: Darra-i-Pech, Nangarhar, Afghanistan
Copyright: Joe Freilich; Contribution: Philip Blümner
Location: Afghanistan/Kunar (Konar), Provinz/Chapa Dara, Distrikt/Dara-i-Pech Pegmatitfeld
Mineral: Tantalite-(Mn)
Image: 1222291070
Rating: 8.6 (votes: 5)
License: Usage for Mineralienatlas project only
Manganotantalit XX

Fundort: Darra-i-Pech, Nangarhar, Afghanistan
Copyright: Joe Freilich
Contribution: Philip Blümner 2008-09-24
Locality: Dara-i-Pech Pegmatitfeld / Chapa Dara, Distrikt / Kunar (Konar), Provinz / Afghanistan
Tantalit-(Mn)
Views (File:
1295778411
): 1216
Tantalit-(Mn)
Größe: 27x15x14 mm; Fundort: Paprok, Provinz Nuristan, Afghanistan; Ex Wolfgang Henkel Sammlung
Copyright: Dan Weinrich; Contribution: Philip Blümner
Location: Afghanistan/Nuristan, Provinz/Paprok
Mineral: Tantalite-(Mn)
Image: 1295778411
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Tantalit-(Mn)

Größe: 27x15x14 mm; Fundort: Paprok, Provinz Nuristan, Afghanistan; Ex Wolfgang Henkel Sammlung
Copyright: Dan Weinrich
Contribution: Philip Blümner 2011-01-23
Locality: Paprok / Nuristan, Provinz / Afghanistan
Tantalit-(Mn)
Views (File:
1266747678
): 2876
Tantalit-(Mn)
Bildbreite: 30 mm; Fundort: Alto de Furnas, Equador, Mineralprovinz Borborema, Paraiba, Nordostregion, Brasilien
Copyright: Philip Blümner; Contribution: Philip Blümner
Collection: giantcrystal
Location: Brasilien/Nordosten (Região Nordeste)/Paraíba/Borborema/Equador/Alto de Furnas
Mineral: Tantalite-(Mn)
Image: 1266747678
Rating: 8 (votes: 1)
License: Usage for Mineralienatlas project only
Tantalit-(Mn)

Bildbreite: 30 mm; Fundort: Alto de Furnas, Equador, Mineralprovinz Borborema, Paraiba, Nordostregion, Brasilien
Collection: giantcrystal
Copyright: Philip Blümner
Contribution: Philip Blümner 2010-02-21
Locality: Alto de Furnas / Equador / Borborema / Paraíba / Nordosten (Região Nordeste) / Brasilien
Tantalit-(Mn)
Views (File:
1294658404
): 2864
Tantalit-(Mn)
Größe: 17x05x04 mm; Fundort: Murrua, Alto Ligonha Pegmatite, Provinz Zambezia, Mosambik
Copyright: Michael Roarke; Contribution: Philip Blümner
Location: Mosambik/Zambezia, Provinz/Alto Ligonha Pegmatite/Murrua (Morrua)
Mineral: Tantalite-(Mn)
Image: 1294658404
Rating: 8 (votes: 1)
License: Usage for Mineralienatlas project only
Tantalit-(Mn)

Größe: 17x05x04 mm; Fundort: Murrua, Alto Ligonha Pegmatite, Provinz Zambezia, Mosambik
Copyright: Michael Roarke
Contribution: Philip Blümner 2011-01-10
Locality: Murrua (Morrua) / Alto Ligonha Pegmatite / Zambezia, Provinz / Mosambik

You find additional specimen at the Geolitho Museum

Collectors Summary

Color schwarz, braun
Streak color braun
Hardness (Mohs) 5.75
Solubility - Säuren
Crystal System orthorhombisch, Pbcn

Chemism

Chemical formula

MnTa2O6

Chemical composition

Mangan, Tantal, Sauerstoff

Unit weight: 512.8304499 u; Number of atoms in the formula: 9

Info

Empirical formula:

MnTa2O6

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

18.72

6

66.67

15.9994300

95.9965800
Manganese

Mn

10.71

1

11.11

54.9380499

54.9380499
Tantalum

Ta

70.57

2

22.22

180.9479100

361.8958200

Analysis wt%

MnO : 10.30, FeO : 4.40, Ta2O5 : 73.60, Nb2O5 : 10.80 (Ref: Canadian Mineralogist 92)

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.18-040

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

Classification by Hölzel

4.DI.110

4: OXIDES
D: Dioxides
I: Columbite-Group

Dana 8th edition

08.03.02.03

08: Multiple Oxides with Nb, Ta, and Ti
03: Multiple Oxides with Nb, Ta, and Ti where A (B2O6)
02: Tantalite - Columbite Series

IMA status

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Columbite supergroup  ⇒ Columbite group

Optical Properties

Color

schwarz, braun

Streak color

braun

Diaphaneity (Transparency)

opak

max. Birefringence

0.15
Birefringence chart\! Tantalite-(Mn) title=Birefringence chart Tantalite-(Mn)

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

2.19

RI value β

2.25

RI value γ / ε

2.34

Ri mean

2.260

2V angle

Biaxial (+) 82°

Optical Data Luminescence

Luminescence

keine Fluoreszenz bekannt

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mmm

Space Group number

60

Space Group

Pbcn

Cell parameters a (Å)

5.09

Cell parameters b (Å)

14.39

Cell parameters c (Å)

5.76

Cell parameters a/b or c/a

0.354

Cell parameters c/b

0.400

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

4

Volume (ų)

421.892

X-Ray Powder Diffraction

3.62(90),
2.933(100),
1.886(70),
1.707(80),
1.524(80),
1.455(80),
1.442(80),
0.988(80)
XRD chart Tantalite-(Mn)

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)

5.75

VHN (Hardness Vickers)

585 (100g)

Density (g/cm³)

8.1

8.073 ( ρ calc. Mineralienatlas )

Instability

- Säuren

(Co-)Type locality

(Co-)Type locality

Schweden/Södermanland, Provinz/Nyköping/Utö

Preface

Author (Name, Year)

Nordenskiöld, 1877

References

Handbook of Mineralogy (Anthony et al.), 3 (1997), 346

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

IMA group assignments

Other languages

German

Tantalit-(Mn)

Spanish

Tantalita-(Mn)

English

Tantalite-(Mn)

Russian

Мангантанталит

Traditional Chinese

鉭錳礦

Simplified Chinese

钽锰矿

Japanese

ﾏﾝｶﾞﾉﾀﾝﾀﾙ石

old name

Spanish

Manganotantalita

English

Manganotantalite

French

Manganotantalite

Alternative Name

Alvarolit

Alvarolita

Alvarolite

German

Manganotantalit

Mangantantalite

Traditional Chinese

錳鉭鐵礦

Simplified Chinese

锰钽铁矿

CNMNC symbol

Symbol

Ttl-Mn

Locations with GPS information

IDs

GUSID (Global unique identifier short form) s36Qkt-o5k6Cp0yD7NEtBw
GUID (Global unique identifier) 92907EB3-A8DF-4EE6-82A7-4C83ECD12D07
Database ID 2377