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Tapiolite-(Mn) (Tapiolit-(Mn))

Additional Functions

Collectors Summary

Hardness (Mohs) 6
Solubility - Säuren
Crystal System tetragonal, P42/mnm

Chemism

Chemical formula

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

Chemical composition

Eisen, Mangan, Niob, Tantal, Sauerstoff

Unit weight: 469.036473425 u; Number of atoms in the formula: 9

Info

Empirical formula:

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

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

20.47

6

66.67

15.9994300

95.9965800

Manganese

Mn

8.78

0.75

8.33

54.9380499

41.2035374

Iron

Fe

2.98

0.25

2.78

55.8452000

13.9613000

Niobium

Nb

9.90

0.5

5.56

92.9063820

46.4531910

Tantalum

Ta

57.87

1.5

16.67

180.9479100

271.4218650

Analysis wt%

FeO : 3.20, MnO : 10.20, CaO : 0.40, Ta2O5 : 76.30, Nb2O5 : 8.50, SnO2 : 1.00 (Ref: Bull.Geol.Soc.Finland,83)

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.04-020

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

Classification by Hölzel

4.DD.450

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

Dana 8th edition

08.03.01.02

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

2V angle

Uniaxial

Crystallography

Crystal System

tetragonal

Class (H-M)

4/mmm

Space Group number

136

Space Group

P42/mnm

Cell parameters a (Å)

4.762

Cell parameters b (Å)

-

Cell parameters c (Å)

9.272

Cell parameters a/b or c/a

1.947

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

2

Volume (ų)

210.258

X-Ray Powder Diffraction

4.24(40),
3.367(100),
2.592(90),
2.381(60),
1.754(90),
1.682(60),
1.504(40),
1.411(40)

XRD chart Tapiolite-(Mn)

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

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

6

VHN (Hardness Vickers)

711 (100g)

Density (g/cm³)

7.72 (berechnet)

7.408 ( ρ calc. Mineralienatlas )

Instability

- Säuren

Preface

Author (Name, Year)

Lahti & Johanson & Virkkunen, 1983

References

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

Other languages

Spanish

Manganotapiolita

French

Manganotapiolite

German

Tapiolit-(Mn)

English

Tapiolite-(Mn)

Russian

Манганотапиолит

Russian

Тапиолит-(Mn)

old name

German

Manganotapiolit

CNMNC (IMA)-Number

IMA 1983-005

CNMNC symbol

Symbol

Tap-Mn

IDs

GUSID (Global unique identifier short form) c66odpfI2kePZoYH1fLvjA
GUID (Global unique identifier) 76A8AE73-C897-47DA-8F66-8607D5F2EF8C
Database ID 2378