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Ferrotitanowodginite

Collectors Summary

Color sehr dunkelbraun, schwarz
Streak color dunkelbraun
Hardness (Mohs) 5.5
Cleavages nicht beobachtet
Fracture unregelmäßig
Crystal System monoklin, C2/c

Chemism

Chemical formula

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

Chemical composition

Eisen, Mangan, Niob, Tantal, Titan, Zinn, Sauerstoff

Unit weight: 584.316074475 u; Number of atoms in the formula: 12

Info

Empirical formula:

(Fe0.75Mn0.25)(Ti0.55Sn0.3Ta0.1Fe0.05)(Ta0.75Nb0.25)2O8

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

21.91

8

66.67

15.9994300

127.9954400
Titanium

Ti

4.51

0.55

4.58

47.8671000

26.3269050
Manganese

Mn

2.35

0.25

2.08

54.9380499

13.7345125
Iron

Fe

7.65

0.8

6.67

55.8452000

44.6761600
Niobium

Nb

7.95

0.5

4.17

92.9063820

46.4531910
Tin

Sn

6.09

0.3

2.50

118.7107000

35.6132100
Tantalum

Ta

49.55

1.6

13.33

180.9479100

289.5166560

Analysis wt%

Ø Nb2O5 : 6.52, Ta2O5 : 70.68, TiO2 : 7.10, SnO2 : 1.25, Fe2O3 : 2.18, MnO : 1.05, FeO : 10.27 (Ref: American Mineralogist 99)

Strunz 9th edition incl. updates

4.DB.40

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
40:Wodginit-Gruppe

Lapis Classification

IV/D.17-055

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

Classification by Hölzel

4.DH.285

4: OXIDES
D: Dioxides
H: Wolframite-Group

Dana 8th edition

08.01.08.05

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

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Columbite supergroup  ⇒ Wodginite group

Optical Properties

Color

sehr dunkelbraun, schwarz

Streak color

dunkelbraun

Diaphaneity (Transparency)

opak

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

15

Space Group

C2/c

Cell parameters a (Å)

9.403

Cell parameters b (Å)

11.384

Cell parameters c (Å)

5.075

Cell parameters a/b or c/a

0.826

Cell parameters c/b

0.446

Cell parameters α

90°

Cell parameters β

90.55

Cell parameters γ

90°

Z

4

Volume (ų)

543.222

X-Ray Powder Diffraction

3.626(70),
2.963(100),
2.939(90),
2.484(40),
1.759(40),
1.715(50),
1.711(40),
1.447(40)
XRD chart Ferrotitanowodginite

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

Physical Properties

Hardness (Mohs)

5.5

VHN (Hardness Vickers)

530 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

7.37 (berechnet)

7.144 ( ρ calc. Mineralienatlas )

Cleavages

nicht beobachtet

Fracture

unregelmäßig

Tenacity

spröde

(Co-)Type locality

(Co-)Type locality

Argentinien/San Luis, Provinz/Chacabuco, Departamento/Sierra de la Estanzuela/San Elías- und La Viquita-Pegmatit

Preface

Author (Name, Year)

Galliski & Cerny & Marquez-Zavalia & Chapman, 1999

References

American Mineralogist 84 (1999), 773

IMA group assignments

Other languages

German

Ferrotitanowodginit

Spanish

Ferrotitanowodginita

English

Ferrotitanowodginite

French

Ferrotitanowodginite

Russian

Ферротитановоджинит

Japanese

鉄ﾁﾀﾝｳｯｼﾞｰﾅ鉱

CNMNC (IMA)-Number

IMA 1998-028

CNMNC symbol

Symbol

Ftwdg

Locations with GPS information

IDs

GUSID (Global unique identifier short form) 1GUD6p0ruU6YNhacKRc6Rw
GUID (Global unique identifier) EA0365D4-2B9D-4EB9-9836-169C29173A47
Database ID 1205