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Tapiolite-(Fe)

Pictures (5 Images total)

Tapiolit-Fe xx "Kniezwillinge"
Views (Image: 1566140754): 424
Tapiolit-Fe xx "Kniezwillinge"

Rio Graia,Trontano,Val Vigezzo/Italien; Fund von C.Albertini; Bildbreite 10,5 mm

Collection: Haubi
Copyright: Haubi
Contribution: Haubi 2019-08-18
Locality: Rio Graia / Trontano / Verbano-Cusio-Ossola, Provinz / Piemont (Piemonte), Region / Italien
Tapiolith-(Fe)
Views (Image: 1153231984): 1342
Tapiolith-(Fe)

Mina Quixaba, Frei Martinho, Paraíba, Brasilien;
Größe des Kristalls: 10x8mm

Copyright: Fabre Minerals
Contribution: slugslayer 2006-07-18
Locality: Quixaba-Pegmatit / Quixaba / Frei Martinho / Paraíba / Nordosten (Região Nordeste) / Brasilien
Ferrotapiolit
Views (Image: 1266138679): 1234
Ferrotapiolit

Kristallgröße: 15 mm; Fundort: Joaquim, Quixaba, Frei Martinho, Paraiba, Nordosten, Brasilien

Collection: giantcrystal
Copyright: slugslayer
Contribution: slugslayer 2010-02-14
Locality: Joaquim Cigano / Quixaba / Frei Martinho / Paraíba / Nordosten (Região Nordeste) / Brasilien
Ferrotapiolit
Views (Image: 1264177265): 963
Ferrotapiolit

Kristallgröße: 8 mm; Fundort: Quixaba-Pegmatit, Frei Martinho, Paraíba, Nordostregion, Brasilien

Copyright: Paul Bongaerts
Contribution: slugslayer 2010-01-22
Locality: Quixaba-Pegmatit / Quixaba / Frei Martinho / Paraíba / Nordosten (Região Nordeste) / Brasilien
Ferrotapiolit
Views (Image: 1264177218): 989
Ferrotapiolit

Größe: 45x30 mm; Fundort: Alto-do-Giz-Pegmatit, Equador, Nordostregion, Brasilien

Copyright: Paul Bongaerts
Contribution: slugslayer 2010-01-22
Locality: Alto-do-Giz-Pegmatit / Equador / Borborema, Bergbaudistrikt / Rio Grande do Norte / Nordosten (Região Nordeste) / Brasilien

Collectors Summary

Color bräunlichschwarz, schwarz
Streak color braun
Hardness (Mohs) 6.25
Solubility - Säuren
Crystal System tetragonal, P42/mnm

Chemism

Chem­ical formula

(Fe2+,Mn2+)(Ta,Nb)2O6

Chem­ical com­po­si­tion

Eisen, Mangan, Niob, Tantal, Sauerstoff

Unit weight: 469.490048475 u; Number of atoms in the formula: 9

Info

Empirical formula:

(Fe0.75Mn0.25)(Ta0.75Nb0.25)2O6

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

20.45

6

66.67

15.9994300

95.9965800

Manganese

Mn

2.93

0.25

2.78

54.9380499

13.7345125

Iron

Fe

8.92

0.75

8.33

55.8452000

41.8839000

Niobium

Nb

9.89

0.5

5.56

92.9063820

46.4531910

Tantalum

Ta

57.81

1.5

16.67

180.9479100

271.4218650

Anal­y­sis wt%

FeO : 11.03, MnO : 2.72, SnO2 : 0.71, Ta2O5 : 80.77, Nb2O5 : 2.78 (Ref: Canadian Mineralogist 92)

Strunz 9th edi­tion incl. updates

4.DB.10

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
10:Tapiolit-Gruppe

Lapis Clas­sifica­tion

IV/D.04-010

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

Clas­sifica­tion by Hölzel

4.DD.440

4: OXIDES
D: Dioxides
D: Rutile-Group
4: Trirutiles

Dana 8th edi­tion

08.03.01.01

08: Multiple Oxides with Nb, Ta, and Ti
03: Multiple Oxides with Nb, Ta, and Ti where A (B2O6)
01: Tapiolite Series

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

bräunlichschwarz, schwarz

Streak color

braun

Diaphane­ity (Trans­parency)

opak

max. Birefrin­gence

0.15

Birefringence chart\! Tapiolite-(Fe) title=Birefringence chart Tapiolite-(Fe)

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

2.27

RI value β

  • (Li)

RI value γ / ε

2.42

Ri mean

2.320

2V angle

Uniaxial (+)

Optical Data Luminescence

Lumi­nes­cence

keine Fluoreszenz bekannt

Crystallography

Crystal Sys­tem

tetragonal

Class (H-M)

4/mmm

Space Group number

136

Space Group

P42/mnm

Cell param­e­ters a (Å)

4.75

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

9.24

Cell param­e­ters a/b or c/a

1.945

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

208.478

X-Ray Pow­der Diffrac­tion

3.37(100),
2.58(90),
2.375(50),
1.747(90),
1.677(50),
1.501(50),
1.407(50),
1.395(50)

XRD chart Tapiolite-(Fe)

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)

6.25

VHN (Hard­ness Vick­ers)

926 (100g)

Density (g/cm³)

7.82

7.479 ( ρ calc. Mineralienatlas )

Insta­bil­ity

- Säuren

Preface

Author (Name, Year)

Lahti & Johanson & Virkkunen, 1983

References

Geological Society of Finland, Bulletin 55 (1983), 101

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

'Tapiolite'

(Fe,Mn)(Ta,Nb)2O6

4.DB.10

Tredouxite

NiSb2O6

tetragonal : 4/mmm : P42/mnm

4.DB.10

Byströmite

MgSb2O6

tetragonal : 4/mmm : P42/mnm

4.DB.10

Ordoñezite

ZnSb2O6

tetragonal : 4/mmm : P42/mnm

4.DB.10

Tapiolite-(Fe)

(Fe2+,Mn2+)(Ta,Nb)2O6

tetragonal : 4/mmm : P42/mnm

4.DB.10

Tapiolite-(Mn)

(Mn2+,Fe2+)(Ta,Nb)2O6

tetragonal : 4/mmm : P42/mnm

4.DB.10

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

Tapiolite-(Fe)

(Fe2+,Mn2+)(Ta,Nb)2O6

tetragonal : 4/mmm : P42/mnm

IV/D.04-010

Tapiolite-(Mn)

(Mn2+,Fe2+)(Ta,Nb)2O6

tetragonal : 4/mmm : P42/mnm

IV/D.04-020

Byströmite

MgSb2O6

tetragonal : 4/mmm : P42/mnm

IV/D.04-040

Ordoñezite

ZnSb2O6

tetragonal : 4/mmm : P42/mnm

IV/D.04-050

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

Byströmite

MgSb2O6

tetragonal : 4/mmm : P42/mnm

4.DD.400

Ordoñezite

ZnSb2O6

tetragonal : 4/mmm : P42/mnm

4.DD.410

Tapiolite-(Fe)

(Fe2+,Mn2+)(Ta,Nb)2O6

tetragonal : 4/mmm : P42/mnm

4.DD.440

Tapiolite-(Mn)

(Mn2+,Fe2+)(Ta,Nb)2O6

tetragonal : 4/mmm : P42/mnm

4.DD.450

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

Tapiolite-(Fe)

(Fe2+,Mn2+)(Ta,Nb)2O6

tetragonal : 4/mmm : P42/mnm

08.03.01.01

Tapiolite-(Mn)

(Mn2+,Fe2+)(Ta,Nb)2O6

tetragonal : 4/mmm : P42/mnm

08.03.01.02

Columbite-(Fe)

Fe2+Nb2O6

orthorhombisch : mmm : Pbcn

08.03.02.02

Tantalite-(Mn)

MnTa2O6

orthorhombisch : mmm : Pbcn

08.03.02.03

Columbite-(Mn)

Mn2+Nb2O6

orthorhombisch : mmm : Pbcn

08.03.02.04

Tantalite-(Mg)

(Mg,Fe2+)(Ta,Nb)2O6

orthorhombisch : mmm : Pbcn

08.03.02.06

Fersmite

(Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6

orthorhombisch : mmm : Pbcn

08.03.03.01

Brannerite

(U,Ca,Y,Ce)(Ti,Fe)2O6

monoklin : 2/m : C2/m

08.03.04.01

Thorutite

(Th,U,Ca)Ti2(O,OH)6

monoklin : 2/m : C2/m

08.03.04.02

Lucasite-(Ce)

(Ce,La)Ti2(O,OH)6

monoklin : 2/m : I2/a

08.03.05.01

Aeschynite-(Ce)

(Ce,Ca,Fe,Th)(Ti,Nb)2(O,OH)6

orthorhombisch : mmm : Pbnm

08.03.06.01

Nioboaeschynite-(Ce)

(Ce,Ca)(Nb,Ti)2(O,OH)6

orthorhombisch : mmm : Pbnm

08.03.06.02

Aeschynite-(Y)

(Y,Ln,Ca,Th)(Ti,Nb)2(O,OH)6

orthorhombisch : mmm : Pbnm

08.03.06.03

Aeschynite-(Nd)

(Nd,Ln,Ca)(Ti,Nb)2(O,OH)6

08.03.06.05

Vigezzite

(Ca,Ce)(Nb,Ta,Ti)2O6

orthorhombisch : mmm : Pbnm

08.03.07.01

Rynersonite

Ca(Ta,Nb)2O6

orthorhombisch : mmm : Pbnm

08.03.07.02

Polycrase-(Y)

(Y,Ca,Ce,U,Th)(Ti,Nb,Ta)2O6

orthorhombisch : mmm : Pbcn

08.03.08.01

Euxenite-(Y)

Y(Nb0.5Ti0.5)2O6

orthorhombisch : mmm : Pbcn

08.03.08.02

Tanteuxenite-(Y)

(Y,Ce,Ca)(Ta,Nb,Ti)2(O,OH)6

orthorhombisch : mmm : Pbcn

08.03.08.03

'Yttrocrasite-(Y)'

(Y,Th,Ca,U)(Ti,Fe3+)2(O,OH)6

08.03.08.04

Uranopolycrase

(U,Y)(Ti,Nb,Ta)2(O,OH)6

orthorhombisch : mmm : Pbcn

08.03.08.05

Kassite

CaTi2O4(OH)2

monoklin : 2/m : P21/a

08.03.09.01

old name

German

Ferrotapiolit

Alternative Name

English

Ferrotapiolite

CNMNC symbol

Symbol

Tap-Fe

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

German pages

DeWikiPedia - search for: Tapiolit-(Fe)
Google-Bilder-Suche - search for: Tapiolit-(Fe)
Mineralogisch-Petrographisches-Institut Hamburg - search for: Tapiolit-(Fe)

English pages

Mindat - search for: Tapiolite-(Fe)
Webmineral - search for:Tapiolite-(Fe)
Handbook-of-Mineralogy - search for: Tapiolite-(Fe)
RRUFF - Raman, XRD and other mineral data - search for: Tapiolite-(Fe)
RRUFF - References and PDF downloads - search for: Tapiolite-(Fe)
American-Mineralogist-Crystal-Structure-Database - search for: Tapiolite-(Fe)
Athena - search for: Tapiolite-(Fe)

Russian pages

Webmineral.ru - search for: Ферротапиолит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Tapiolit-(Fe)
Crystal-Treasure.com - search for: Tapiolit-(Fe)
Bosse - search for: Tapiolit-(Fe)

Locations with GPS information