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Betafite (of Hogarth 1977)

Pictures (26 Images total)

Betafit
Views (File:
1292361407
): 3271, Rating: 8.4
Betafit
Größe: 20 mm; Fundort: Silver Crater Mine, Faraday Township, Bancroft District, Hastings Co., Ontario, Kanada
Copyright: David K. Joyce; Contribution: slugslayer
Location: Kanada/Ontario/Hastings Co./Faraday Township/Silver Crater Mine
Mineral: Betafite (of Hogarth 1977)
Image: 1292361407
Rating: 8.4 (votes: 5)
License: Usage for Mineralienatlas project only
Betafit

Größe: 20 mm; Fundort: Silver Crater Mine, Faraday Township, Bancroft District, Hastings Co., Ontario, Kanada
Copyright: David K. Joyce
Contribution: slugslayer 2010-12-14
Locality: Silver Crater Mine / Faraday Township / Hastings Co. / Ontario / Kanada
Betafit
Views (File:
1275566092
): 1572
Betafit
Größe: 70x70x46 mm; Fundort: Silver Crater Mine, Faraday Township, Bancroft District, Hastings Co., Ontario, Kanada
Copyright: Joe Freilich; Contribution: slugslayer
Location: Kanada/Ontario/Hastings Co./Faraday Township/Silver Crater Mine
Mineral: Betafite (of Hogarth 1977)
Image: 1275566092
Rating: 8 (votes: 2)
License: Usage for Mineralienatlas project only
Betafit

Größe: 70x70x46 mm; Fundort: Silver Crater Mine, Faraday Township, Bancroft District, Hastings Co., Ontario, Kanada
Copyright: Joe Freilich
Contribution: slugslayer 2010-06-03
Locality: Silver Crater Mine / Faraday Township / Hastings Co. / Ontario / Kanada
Betafit
Views (File:
1292361436
): 2003
Betafit
Größe: 35 mm; Fundort: Silver Crater Mine, Faraday Township, Bancroft District, Hastings Co., Ontario, Kanada; Eigenfund 1966
Copyright: David K. Joyce; Contribution: slugslayer
Location: Kanada/Ontario/Hastings Co./Faraday Township/Silver Crater Mine
Mineral: Betafite (of Hogarth 1977)
Image: 1292361436
Rating: 8 (votes: 2)
License: Usage for Mineralienatlas project only
Betafit

Größe: 35 mm; Fundort: Silver Crater Mine, Faraday Township, Bancroft District, Hastings Co., Ontario, Kanada; Eigenfund 1966
Copyright: David K. Joyce
Contribution: slugslayer 2010-12-14
Locality: Silver Crater Mine / Faraday Township / Hastings Co. / Ontario / Kanada
Betafit
Views (File:
1226244096
): 2439
Betafit
Fundort: Betafo Department, Madagaskar; Größe: 88 x 70 x 34 mm
Copyright: Joe Freilich; Contribution: Stefan
Collection: Robert J. Nowakowski
Location: Madagaskar/Vàkinankàratra, Region/Betafo, Distrikt
Mineral: Betafite (of Hogarth 1977)
Image: 1226244096
Rating: 7 (votes: 3)
License: Usage for Mineralienatlas project only
Betafit

Fundort: Betafo Department, Madagaskar; Größe: 88 x 70 x 34 mm
Collection: Robert J. Nowakowski
Copyright: Joe Freilich
Contribution: Stefan 2008-11-09
Locality: Betafo, Distrikt / Vàkinankàratra, Region / Madagaskar
Betafit(gruppe)-Oktaeder auf Monazit-(Ce)
Views (File:
1186662548
): 1577
Betafit(gruppe)-Oktaeder auf Monazit-(Ce)
Bildbreite: 3 mm; Fundort: Stbr. Caspar, Ettringer Bellerberg, Ettringen, Mayen, Eifel
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Deutschland/Rheinland-Pfalz/Mayen-Koblenz-Kreis/Mayen/Ettringen/Bellerberg/Ettringer Bellerberg (Stbr. Caspar)
Mineral: Betafite (of Hogarth 1977), Monazite-(Ce)
Image: 1186662548
Rating: 7 (votes: 2)
License: Usage for Mineralienatlas project only
Betafit(gruppe)-Oktaeder auf Monazit-(Ce)

Bildbreite: 3 mm; Fundort: Stbr. Caspar, Ettringer Bellerberg, Ettringen, Mayen, Eifel
Copyright: Stephan Wolfsried
Contribution: Hg 2007-08-09
Locality: Ettringer Bellerberg (Stbr. Caspar) / Bellerberg / Ettringen / Mayen / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Betafit
Views (File:
1275566044
): 708
Betafit
Größe: 45x45x33 mm; Fundort: Silver Crater Mine, Faraday Township, Bancroft District, Hastings Co., Ontario, Kanada
Copyright: Joe Freilich; Contribution: slugslayer
Location: Kanada/Ontario/Hastings Co./Faraday Township/Silver Crater Mine
Mineral: Betafite (of Hogarth 1977)
Image: 1275566044
Rating: 7 (votes: 2)
License: Usage for Mineralienatlas project only
Betafit

Größe: 45x45x33 mm; Fundort: Silver Crater Mine, Faraday Township, Bancroft District, Hastings Co., Ontario, Kanada
Copyright: Joe Freilich
Contribution: slugslayer 2010-06-03
Locality: Silver Crater Mine / Faraday Township / Hastings Co. / Ontario / Kanada

Collectors Summary

Color fast immer farblos
Streak color gelblich weiß
Lustre Harzglanz,bruchflächen Fettglanz
Hardness (Mohs) 5 - 5.5
Cleavages fehlt
Crystal System kubisch, Fd3m
Morphology kubisch

Additional information / Summary

Nahezu alle Betafite sind Mitglied der Pyrochlor-Supergruppe; Meist Oxycalciobetafit oder Oxyuranobetafit

Chemism

Chemical formula

(Ca,Na,U)2(Ti,Nb,Ta)2O6(OH)

Chemical composition

Calcium, Natrium, Niob, Tantal, Titan, Sauerstoff, Uran, Wasserstoff

Unit weight: 371.87161292 u; Number of atoms in the formula: 12

Info

Empirical formula:

(Ca0.6Na0.3U0.1)2(Ti0.6Nb0.3Ta0.1)2O6(OH)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.27

1

8.33

1.0079470

1.0079470
Oxygen

O

30.12

7

58.33

15.9994300

111.9960100
Sodium

Na

3.71

0.6

5.00

22.9897702

13.7938621
Calcium

Ca

12.93

1.2

10.00

40.0784000

48.0940800
Titanium

Ti

15.45

1.2

10.00

47.8671000

57.4405200
Niobium

Nb

14.99

0.6

5.00

92.9063820

55.7438292
Tantalum

Ta

9.73

0.2

1.67

180.9479100

36.1895820
Uranium

U

12.80

0.2

1.67

238.0289130

47.6057826

Strunz 9th edition incl. updates

4.DH.15

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

IMA status

2010 durch die Neudefinition der Pyrochlor-Supergruppe diskreditiert; The Canadian Mineralogist Vol. 48, pp. 673-698 (2010

Mineral status

Varietät

Variety / polytype of

Pyrochlore supergroup

Optical Properties

Color

fast immer farblos

Streak color

gelblich weiß

Diaphaneity (Transparency)

durchscheinend bis opak

Lustre

Harzglanz,bruchflächen Fettglanz

Optical Data Luminescence

Luminescence

keine Fluoreszenz bekannt

Crystallography

Crystal System

kubisch

Class (H-M)

m3m

Space Group number

227

Space Group

Fd3m

Cell parameters b (Å)

-

Cell parameters c (Å)

-

Cell parameters a/b or c/a

1

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

8

X-Ray Powder Diffraction

2.96(100),
2.56(20),
1.814(40),
1.546(40),
1.482(10),
1.284(10),
1.179(20),
1.148(10)
XRD chart Betafite (of Hogarth 1977)

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

Morphology

kubisch

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

5 - 5.5

Density (g/cm³)

3.7 - 4.9 / Durchschnittlich = 4.3

Cleavages

fehlt

Tenacity

Spröde

Radioactivity

stark radioaktiv

Chemical Properties and Tests

Glüht beim Erhitzen auf

(Co-)Type locality

(Co-)Type locality

Madagaskar/Vàkinankàratra, Region/Betafo, Distrikt/Betafo/Ambolotara

Preface

Author (Name, Year)

Lacroix, 1912

Collector information

Stark Radioaktiv

References

Mineralogical Magazine 68 (2004), 939

The Pyrochlore Supergroup of Minerals: Nomenclature; The Canadian Mineralogist Vol. 48, pp. 673-698 (2010)

Varieties

Tantalbetafite

tantalreiche Varietät von Betafit (nach Hogarth 1977).

Other languages

German

Betafit (nach Hogarth 1977)

Spanish

Betafita (de Hogarth 1977)

French

Betafite (de Hogarth 1977)

English

Betafite (of Hogarth 1977)

Russian

Бетафит

Japanese

ﾍﾞﾀﾎ石

Alternative Name

English

Aluminobetafite

Italian

Betafita

Blomstrandite

Mendeleevite

English

Mendelejevite

Mendeleyevite

Mendelyeevite

German

Tangenit

Spanish

Tangenita

Tangenite

Spanish

Tantalbetafita

Titanbetafit

Titanbetafita

Titanbetafite

Titanbetafite (of Hogarth 1977)

Titanobetafite (of Hogarth 1977)

Simplified Chinese

铌钛铀矿

Locations with GPS information

IDs

GUSID (Global unique identifier short form) 6YHKgFz3u02-30kuL7-61g
GUID (Global unique identifier) 80CA81E9-F75C-4DBB-BEDF-492E2FBFBAD6
Database ID 381