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Fergusonite-beta-(Nd)

Collectors Summary

Color bräunlich rot, rot, gelbbraun, orange
Streak color blass braun
Hardness (Mohs) 5.75

Chemism

Chem­ical formula

(Nd,Ce)NbO4

Chem­ical com­po­si­tion

Cerium, Neodymium, Niob, Sauerstoff

Unit weight: 300.115377 u; Number of atoms in the formula: 6

Info

Empirical formula:

(Nd0.75Ce0.25)NbO4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

21.32

4

66.67

15.9994300

63.9977200

Niobium

Nb

30.96

1

16.67

92.9063820

92.9063820

Cerium

Ce

11.67

0.25

4.17

140.1161000

35.0290250

Neodymium

Nd

36.05

0.75

12.50

144.2430000

108.1822500

Anal­y­sis wt%

La2O3 : 2.05, Ce2O3 : 14.62, Pr2O3 : 4.28, Nd2O3 : 21.25, Sm2O3 : 4.53, Gd2O3 : 1.37, Tb2O3 : 0.71, Dy2O3 : 0.98, Ho2O3 : 0.56, Er2O3 : 0.51, Yb2O3 : 0.45, Y2O3 : 2.83, Nb2O5 : 41.00, ThO2 : 1.09, UO2 : 1.46, Ln2O3 : 55.00 (Ref: Sci.Geol.Sin.83)

Strunz 9th edi­tion incl. updates

4.DG.10

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
D: Metall: Sauerstoff = 1:2 und vergleichbare
G: Mit großen (± mittelgroßen) [Kationen]; Ketten kantenverknüpfter Oktaeder
10:ß-Fergusonit-Gruppe

Lapis Clas­sifica­tion

IV/D.24-030

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

Clas­sifica­tion by Hölzel

4.DJ.420

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

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

bräunlich rot, rot, gelbbraun, orange

Streak color

blass braun

Diaphane­ity (Trans­parency)

durchscheinend bis opak

RI value α / ω / n

2.0

RI value β

metam.

Ri mean

2.0

2V angle

i metam.

Crystallography

Cell param­e­ters a (Å)

5.149s

Cell param­e­ters b (Å)

11.29s

Cell param­e­ters c (Å)

5.475s

Cell param­e­ters a/b or c/a

0.456

Cell param­e­ters c/b

0.485

Cell param­e­ters α

90°

Cell param­e­ters β

94.58

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

317.2

Physical Properties

Hard­ness (Mohs)

5.75

VHN (Hard­ness Vick­ers)

630 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

6.45

6.284 ( ρ calc. Mineralienatlas )

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

Yttrotantalite-(Y)

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

4.DG.10

Fergusonite-(Y)-β

YNbO4

monoklin : I2/a

4.DG.10

Fergusonite-(Ce)-β

(Ce,La,Nd)NbO4

monoklin : 2/m : I2/a

4.DG.10

Fergusonite-beta-(Nd)

(Nd,Ce)NbO4

4.DG.10

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

Fergusonit-(Nd)-β

Spanish

Fergusonita-beta-(Nd)

English

Fergusonite-(Nd)-β

French

Fergusonite-Beta-(Nd)

English

Fergusonite-beta-(Nd)

Alternative Name

English

Beta-Fergusonite-(Nd)

German

Fergusonit-(Nd)-beta

German

Fergusonit-beta-(Nd)

English

Fergusonite-(Nd)-beta

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

German pages

DeWikiPedia - search for: Fergusonit-(Nd)-β
Google-Bilder-Suche - search for: Fergusonit-(Nd)-β
Mineralogisch-Petrographisches-Institut Hamburg - search for: Fergusonit-(Nd)-β

English pages

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

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Fergusonit-(Nd)-β
Crystal-Treasure.com - search for: Fergusonit-(Nd)-β
Bosse - search for: Fergusonit-(Nd)-β

Locations with GPS information