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Nioboaeschynite-(Ce) (Nioboaeschynit-(Ce))

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Nioboaeschynit-(Ce) (braun)
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Nioboaeschynit-(Ce) (braun)

Größe: 70x40x25 mm; Fundort: Nordkorea

Copyright: Pavel M. Kartashov
Contribution: slugslayer 2009-06-12
Locality: Nordkorea

Collectors Summary

Color rotbraun, dunkelbraun
Streak color orange, rötlichbraun
Lustre Harzglanz
Hardness (Mohs) 4.5 - 5.5
Fracture muschelig
Solubility + heiße HCl oder H2SO4
Crystal System orthorhombisch, Pbnm

Chemism

Chemical formula

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

Empirical formula (analysis)

(Ce0.32Ca0.27Nd0.11La0.10Fe0.05Pr0.04Th0.02Y0.01)(Nb1.17Ti0.83)(O, OH)5.78

Chemical composition

Calcium, Cerium, Niob, Titan, Sauerstoff, Wasserstoff

Unit weight: 341.737337555 u; Number of atoms in the formula: 10.145

Info

Empirical formula:

(Ce0.32Ca0.27Nd0.11La0.10Fe0.05Pr0.04Th0.02Y0.01)(Nb1.17Ti0.83)(O0.75(OH)0.25)5.78

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.43

1.45

14.24

1.0079470

1.4564834

Oxygen

O

27.06

5.78

56.97

15.9994300

92.4767054

Calcium

Ca

3.17

0.27

2.66

40.0784000

10.8211680

Titanium

Ti

11.63

0.83

8.18

47.8671000

39.7296930

Iron

Fe

0.82

0.05

0.49

55.8452000

2.7922600

Yttrium

Y

0.26

0.01

0.10

88.9058520

0.8890585

Niobium

Nb

31.81

1.17

11.53

92.9063820

108.7004669

Lanthanum

La

4.06

0.1

0.99

138.9055200

13.8905520

Cerium

Ce

13.12

0.32

3.15

140.1161000

44.8371520

Praseodymium

Pr

1.65

0.04

0.39

140.9076520

5.6363061

Neodymium

Nd

4.64

0.11

1.08

144.2430000

15.8667300

Thorium

Th

1.36

0.02

0.20

232.0381100

4.6407622

Analysis wt%

Nb2O5 : 51.10, TiO2 : 18.50, Fe2O3 : 2.20, CaO : 7.20, La2O3 : 5.00, Ce2O3 : 16.60, MnO : 0.80, Ln2O3 : 21.60 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 93)

Strunz 9th edition incl. updates

4.DF.05

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
D: Metall: Sauerstoff = 1:2 und vergleichbare
F: Mit großen (± mittelgroßen) Kationen; dimers und trimers kantenverknüpfte Oktaeder
05:Aeschynit-Gruppe

Lapis Classification

IV/D.21-050

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

Classification by Hölzel

4.DJ.340

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

Dana 8th edition

08.03.06.02

08: Multiple Oxides with Nb, Ta, and Ti
03: Multiple Oxides with Nb, Ta, and Ti where A (B2O6)
06: Aeschynite group

IMA status

Mit Anerkennung der CNMNC umbenannt

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Aeschynite group

Optical Properties

Color

rotbraun, dunkelbraun

Streak color

orange, rötlichbraun

Change in color

rot in dünnen Fragmenten

Diaphaneity (Transparency)

durchscheinend, opak

Lustre

Harzglanz

max. Birefringence

0.09

Birefringence chart\! Nioboaeschynite-(Ce) title=Birefringence chart Nioboaeschynite-(Ce)

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 - 2.28

RI value β

2.32 - 2.38

RI value γ / ε

2.36 - 2.50

Ri mean

2.352

2V angle

Biaxial (-) 75° - 97° (gemessen)

Pleochroism

schwach; X = rot, rötlichbraun, gelblich braun; Y= rötlichbraun zu braun; Z = rötlichbraun zu dunkelbraun

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mmm

Space Group number

62

Space Group

Pbnm

Cell parameters a (Å)

5.396

Cell parameters b (Å)

11.085

Cell parameters c (Å)

7.585

Cell parameters a/b or c/a

0.487

Cell parameters c/b

0.684

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

4

Volumne (ų)

453.694

X-Ray Powder Diffraction

5.539(20),
3.445(20),
3.132(40),
3.048(70),
2.983(100),
2.827(20),
2.699(20),
2.044(20)

XRD chart Nioboaeschynite-(Ce)

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)

4.5 - 5.5

VHN (Hardness Vickers)

593 - 683

Density (g/cm³)

5.16 (berechnet) 4.97 - 5.13 (gemessen)

5.003 ( ρ calc. Mineralienatlas )

Fracture

muschelig

Tenacity

spröde

Instability

+ heiße HCl oder H2SO4

Preface

Author (Name, Year)

Zhabin & Mukhitdinov & Kazakova, 1960

References

Trudy Institut Mineralogii, Geokhimii, Kristallokhimii Redkikh Elementov, Akademiia Nauk SSSR 4 (1960), 51

American Mineralogist 60 (1975), 309

Handbook of Mineralogy (Anthony et al.), 3 (1997), 407

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

IMA group assignments

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

Aeschynite-(Ce)

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

orthorhombisch : mmm : Pbnm

4.DF.05

Aeschynite-(Nd)

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

4.DF.05

Aeschynite-(Y)

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

orthorhombisch : mmm : Pbnm

4.DF.05

Nioboaeschynite-(Ce)

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

orthorhombisch : mmm : Pbnm

4.DF.05

'Nioboaeschynite-(Nd)'

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

4.DF.05

Nioboaeschynite-(Y)

[(Y,Ln),Ca,Th,Fe](Nb,Ti,Ta)2(O,OH)6

orthorhombisch : mmm : Pbnm

4.DF.05

Rynersonite

Ca(Ta,Nb)2O6

orthorhombisch : mmm : Pbnm

4.DF.05

Tantalaeschynite-(Y)

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

orthorhombisch : mmm : Pbnm

4.DF.05

Vigezzite

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

orthorhombisch : mmm : Pbnm

4.DF.05

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

Aeschynite-(Y)

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

orthorhombisch : mmm : Pbnm

IV/D.21-010

Aeschynite-(Ce)

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

orthorhombisch : mmm : Pbnm

IV/D.21-020

Aeschynite-(Nd)

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

IV/D.21-030

Vigezzite

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

orthorhombisch : mmm : Pbnm

IV/D.21-040

Nioboaeschynite-(Y)

[(Y,Ln),Ca,Th,Fe](Nb,Ti,Ta)2(O,OH)6

orthorhombisch : mmm : Pbnm

IV/D.21-045

Nioboaeschynite-(Ce)

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

orthorhombisch : mmm : Pbnm

IV/D.21-050

'Nioboaeschynite-(Nd)'

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

IV/D.21-060

Rynersonite

Ca(Ta,Nb)2O6

orthorhombisch : mmm : Pbnm

IV/D.21-070

Tantalaeschynite-(Y)

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

orthorhombisch : mmm : Pbnm

IV/D.21-080

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

Aeschynite-(Ce)

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

orthorhombisch : mmm : Pbnm

4.DJ.300

Aeschynite-(Y)

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

orthorhombisch : mmm : Pbnm

4.DJ.310

Aeschynite-(Nd)

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

4.DJ.320

Tantalaeschynite-(Y)

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

orthorhombisch : mmm : Pbnm

4.DJ.330

Nioboaeschynite-(Ce)

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

orthorhombisch : mmm : Pbnm

4.DJ.340

Nioboaeschynite-(Y)

[(Y,Ln),Ca,Th,Fe](Nb,Ti,Ta)2(O,OH)6

orthorhombisch : mmm : Pbnm

4.DJ.350

Rynersonite

Ca(Ta,Nb)2O6

orthorhombisch : mmm : Pbnm

4.DJ.370

Vigezzite

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

orthorhombisch : mmm : Pbnm

4.DJ.380

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

Other languages

German

Nioboaeschynit-(Ce)

English

Nioboaeschynite-(Ce)

Spanish

Nioboesquinita-(Ce)

Russian

Ниобоэшинит-(Ce)

Simplified Chinese

铌铈易解石

Japanese

セリウムニオブ斜エスキナイト

old name

German

Niobo-Aeschynit-(Ce)

French

Niobo-aeschynite-(Ce)

English

Niobo-aeschynite-(Ce)

Spanish

Niobo-esquinita-(Ce)

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