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Takanawaite-(Y)

Pictures (2 Images total)

Takanawaite-(Y)
Views (Image: 1386099476): 500
Takanawaite-(Y)

braun-schwarzer Takanawaite-(Y) mit teilweiser Kristallstruktur; Takanawa-Berg, Matsuyama-Stadt, Ehime-Präfektur, Shikoku, Japan

Copyright: Daisuke NISHIO-HAMANE
Contribution: Stefan 2013-12-03
Locality: Takanawa, Berg / Matsuyama, Stadt / Ehime, Präfektur / Shikoku / Japan
Takanawaite-(Y)
Views (Image: 1386099392): 361
Takanawaite-(Y)

radialer Takanawaite-(Y) in Gadolinit und braunem Zirkon; Takanawa-Berg, Matsuyama-Stadt, Ehime-Präfektur, Shikoku, Japan

Copyright: Daisuke NISHIO-HAMANE
Contribution: Stefan 2013-12-03
Locality: Takanawa, Berg / Matsuyama, Stadt / Ehime, Präfektur / Shikoku / Japan

Collectors Summary

Color schwarz, dunkelbraun
Lustre Glasglanz
Hardness (Mohs) 5.5
Cleavages fehlt
Fracture muschelig
Crystal System monoklin, I2/a
Morphology Polymorph von Iwashiroit-(Y), Formanit-(Y) und Yttrotantalit-(Y)

Chemism

Chem­ical formula

Y[Ta,Nb]O4

Chem­ical com­po­si­tion

Niob, Tantal, Yttrium, Sauerstoff

Unit weight: 311.8411 u; Number of atoms in the formula: 6

Info

Empirical formula:

Y[Ta0.75Nb0.25]O4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

20.52

4

66.67

15.9994300

63.9977200

Yttrium

Y

28.51

1

16.67

88.9058520

88.9058520

Niobium

Nb

7.45

0.25

4.17

92.9063820

23.2265955

Tantalum

Ta

43.52

0.75

12.50

180.9479100

135.7109325

Strunz 9th edi­tion incl. updates

7.G.

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
G: Molybdate und Wolframate

Lapis Clas­sifica­tion

IV/D.24-003

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

Clas­sifica­tion by Hölzel

4.DJ.440

4: OXIDES
D: Dioxides
J: Titanates, Niobates and Tantalates, C large, V medium ò 2
4: Fergusonite-Group

IMA sta­tus

anerkannt - Februar 2012 - CNMNC Newsletter No. 13, June 2012, page 808; Mineralogical Magazine, 76, 807-817

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

schwarz, dunkelbraun

Diaphane­ity (Trans­parency)

durchscheinend

Lus­tre

Glasglanz

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

15

Space Group

I2/a

Cell param­e­ters a (Å)

5.318

Cell param­e­ters b (Å)

10.957

Cell param­e­ters c (Å)

5.060

Cell param­e­ters a/b or c/a

0.485

Cell param­e­ters c/b

0.462

Cell param­e­ters α

90°

Cell param­e­ters β

94.98

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

293.73

Kristall struc­ture

Struktur bestimmt

X-Ray Pow­der Diffrac­tion

3.133(100), 2.953(85), 2.739(29), 2.649(21), 1.912(24), 1.905(39), 1.855(26), 1.573(18)

XRD chart Takanawaite-(Y)

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

Morphol­ogy

Polymorph von Iwashiroit-(Y), Formanit-(Y) und Yttrotantalit-(Y)

Physical Properties

Hard­ness (Mohs)

5.5

Density (g/cm³)

6.97 (berechnet)

7.051 ( ρ calc. Mineralienatlas )

Cleav­ages

fehlt

Frac­ture

muschelig

Radioac­tiv­ity

kann auf Grund geringer Urangehalte leicht radioaktiv sein.

(Co-)Type locality

(Co-)Type locality

Japan/Shikoku/Ehime, Präfektur/Matsuyama, Stadt/Takanawa, Berg

Type mate­r­ial

National Museum der Natur und Wissenschaften, Tokyo, Japan

Col­lec­tion number of type mate­r­ial

NSM M-43517

Par­a­ge­n­e­sis of type mate­r­ial

In einem Muskovitpegmatit zusammen mit Gadolinit und Zirkon als tafelige Kristalle bis 5mm.

Preface

Asso­cia­tions

Gadolinit, Feldspat, Zirkon

Name from

Name für den Berg wo es gefunden wurde

Author (Name, Year)

Daisuke Nishio-Hamane, Tetsuo Minakawa und Yukikazu Ohgoshi (2012)

References

CNMNC Newsletter No. 13, June 2012, page 808; Mineralogical Magazine, 76, 807-817

Nishio-Hamane D., Minakawa T., Ohgoshi Y. (2013) Takanawaite-(Y), a new mineral of the M-type polymorph with Y(Ta,Nb)O4 from Takanawa Mountain, Ehime Prefecture, Japan. Journal of Mineralogical and Petrological Sciences, 108, 335-344.

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

Takanawaite-(Y)

Y[Ta,Nb]O4

monoklin : 2/m : I2/a

IV/D.24-003

Iwashiroite-(Y)

YTaO4

monoklin : 2/m : P2/a

IV/D.24-005

Fergusonite-(Y)-β

YNbO4

monoklin : I2/a

IV/D.24-010

Fergusonite-(Ce)-β

(Ce,La,Nd)NbO4

monoklin : 2/m : I2/a

IV/D.24-020

Fergusonite-beta-(Nd)

(Nd,Ce)NbO4

IV/D.24-030

Fergusonite-(Y)

YNbO4

tetragonal : 4/m : I41/a

IV/D.24-040

'Fergusonite-(Ce)'

CeNbO4

tetragonal : 4/m : I41/a

IV/D.24-050

'Fergusonite-(Nd)'

(Nd,Ce)(Nb,Ti)O4

IV/D.24-060

Formanite-(Y)

YTaO4

monoklin : 2/m : P2/a

IV/D.24-070

Raspite

PbWO4

monoklin : 2/m : P21/a

IV/D.24-080

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

Yttrotantalite-(Y)

(Y,U,Fe2+)(Ta,Nb)(O,OH)4

4.DJ.400

Fergusonite-(Y)-β

YNbO4

monoklin : I2/a

4.DJ.410

Fergusonite-beta-(Nd)

(Nd,Ce)NbO4

4.DJ.420

Fergusonite-(Ce)-β

(Ce,La,Nd)NbO4

monoklin : 2/m : I2/a

4.DJ.430

Takanawaite-(Y)

Y[Ta,Nb]O4

monoklin : 2/m : I2/a

4.DJ.440

Fergusonite-(Y)

YNbO4

tetragonal : 4/m : I41/a

4.DJ.450

Formanite-(Y)

YTaO4

monoklin : 2/m : P2/a

4.DJ.460

Iwashiroite-(Y)

YTaO4

monoklin : 2/m : P2/a

4.DJ.465

'Fergusonite-(Ce)'

CeNbO4

tetragonal : 4/m : I41/a

4.DJ.470

Other languages

German

Takanawait-(Y)

English

Takanawaite-(Y)

Japanese

高縄石

IMA Number

IMA 2011-099

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

German pages

DeWikiPedia - search for: Takanawait-(Y)
Google-Bilder-Suche - search for: Takanawait-(Y)
Mineralogisch-Petrographisches-Institut Hamburg - search for: Takanawait-(Y)

English pages

Mindat - search for: Takanawaite-(Y)
Webmineral - search for:Takanawaite-(Y)
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RRUFF - Raman, XRD and other mineral data - search for: Takanawaite-(Y)
RRUFF - References and PDF downloads - search for: Takanawaite-(Y)
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Mineral Dealer

German pages

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