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Gadolinite-(Ce)

Pictures (15 Images total)

Gadolinit-(Ce)
Views (File:
1403161385
): 2337, Rating: 8.71
Gadolinit-(Ce)
Gadolinit-(Ce) mit Hämatit von den Wasserfallköpfen, Pfitscher Joch, Südtirol, Italien. Bildbreite 4,5 mm
Copyright: Kainosit; Contribution: Kainosit
Collection: Adolf Mair
Location: Italien/Trentino-Südtirol (Trentino-Alto Adige)/Südtirol (Bozen), Provinz/Wipptal, Bezirk/Pfitsch (Pfitschtal)/St. Jakob-Stein/Pfitscher Joch/Wasserfallköpfe
Mineral: Gadolinite-(Ce)
Image: 1403161385
Rating: 8.71 (votes: 7)
License: Usage for Mineralienatlas project only
Gadolinit-(Ce)

Gadolinit-(Ce) mit Hämatit von den Wasserfallköpfen, Pfitscher Joch, Südtirol, Italien. Bildbreite 4,5 mm
Collection: Adolf Mair
Copyright: Kainosit
Contribution: Kainosit 2014-06-19
Locality: Wasserfallköpfe / Pfitscher Joch / St. Jakob-Stein / Pfitsch (Pfitschtal) / Wipptal, Bezirk / Südtirol (Bozen), Provinz / Trentino-Südtirol (Trentino-Alto Adige) / Italien
Gadolinit-(Ce)
Views (File:
1269099584
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Gadolinit-(Ce)
Bildbreite: 2,5 mm; Fundort: Washington Pass, Golden Horn Batholith, Okanogan Co., Washington, USA
Copyright: Stephan Wolfsried; Contribution: Hg
Location: USA/Washington/Okanogan Co./Washington Pass
Mineral: Gadolinite-(Ce)
Image: 1269099584
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Gadolinit-(Ce)

Bildbreite: 2,5 mm; Fundort: Washington Pass, Golden Horn Batholith, Okanogan Co., Washington, USA
Copyright: Stephan Wolfsried
Contribution: Hg 2010-03-20
Locality: Washington Pass / Okanogan Co. / Washington / USA
Gadolinit-(Ce)
Views (File:
1269099526
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Gadolinit-(Ce)
Bildbreite: 2,5 mm; Fundort: Washington Pass, Golden Horn Batholith, Okanogan Co., Washington, USA
Copyright: Stephan Wolfsried; Contribution: Hg
Location: USA/Washington/Okanogan Co./Washington Pass
Mineral: Gadolinite-(Ce)
Image: 1269099526
Rating: 8 (votes: 2)
License: Usage for Mineralienatlas project only
Gadolinit-(Ce)

Bildbreite: 2,5 mm; Fundort: Washington Pass, Golden Horn Batholith, Okanogan Co., Washington, USA
Copyright: Stephan Wolfsried
Contribution: Hg 2010-03-20
Locality: Washington Pass / Okanogan Co. / Washington / USA
Gadolinit-(Ce)
Views (File:
1269099714
): 1822
Gadolinit-(Ce)
Bildbreite: 3,5 mm; Fundort: Washington Pass, Golden Horn Batholith, Okanogan Co., Washington, USA
Copyright: Stephan Wolfsried; Contribution: Hg
Location: USA/Washington/Okanogan Co./Washington Pass
Mineral: Gadolinite-(Ce)
Image: 1269099714
Rating: 7.5 (votes: 2)
License: Usage for Mineralienatlas project only
Gadolinit-(Ce)

Bildbreite: 3,5 mm; Fundort: Washington Pass, Golden Horn Batholith, Okanogan Co., Washington, USA
Copyright: Stephan Wolfsried
Contribution: Hg 2010-03-20
Locality: Washington Pass / Okanogan Co. / Washington / USA
Gadolinit-(Ce)
Views (File:
1344811001
): 475
Gadolinit-(Ce)
Kristallgröße: 0,5 mm, Fundort: Mt Cavalluccio, Sacrofano Caldera, Latium, Italien
Copyright: Luigi Mattei; Contribution: thdun5
Location: Italien/Latium (Lazio), Region/Rom, Provinz/Sacrofano/Sacrofano-Caldera/Mt. Cavalluccio
Mineral: Gadolinite-(Ce)
Image: 1344811001
Rating: 8 (votes: 1)
License: Usage for Mineralienatlas project only
Gadolinit-(Ce)

Kristallgröße: 0,5 mm, Fundort: Mt Cavalluccio, Sacrofano Caldera, Latium, Italien
Copyright: Luigi Mattei
Contribution: thdun5 2012-08-12
Locality: Mt. Cavalluccio / Sacrofano-Caldera / Sacrofano / Rom, Provinz / Latium (Lazio), Region / Italien

Collectors Summary

Color schwarz
Streak color grünlich grau
Solubility ++ warme konz. HCl
Crystal System monoklin, P21/c

Chemism

Chemical formula

Ce2Fe2+Be2O2(SiO4)2

Chemical composition

Beryllium, Cerium, Eisen, Silicium, Sauerstoff

Unit weight: 570.2671246 u; Number of atoms in the formula: 17

Info

Empirical formula:

Ce2FeBe2O2(SiO4)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Beryllium

Be

3.16

2

11.76

9.0121823

18.0243646
Oxygen

O

28.06

10

58.82

15.9994300

159.9943000
Silicon

Si

9.85

2

11.76

28.0855300

56.1710600
Iron

Fe

9.79

1

5.88

55.8452000

55.8452000
Cerium

Ce

49.14

2

11.76

140.1161000

280.2322000

Analysis wt%

SiO2 : 23.17, BeO : 8.83, B2O3 : 0.55, FeO : 10.03, MnO : 1.33, CaO : 2.67, K2O : 0.53, Y2O3 : 6.78, La2O3 : 14.00, Ce2O3 : 21.25, Pr2O3 : 2.95, Nd2O3 : 4.36, Gd2O3 : 0.92, Dy2O3 : 1.01, Er2O3 : 0.76, Yb2O3 : 0.65, Ln2O3 : 54.06 (Ref: American Mineralogist 78)

Strunz 9th edition incl. updates

9.AJ.20

9: Silikate (Germanate)
A: Inselsilikate (Nesosilikate)
J: Insel(Neso)silikate mit BO3 Triangeln und /oder B[4], Be[4] Tetraedern, eckenteilend mit SiO4
20:Datolith-Gruppe

Lapis Classification

VIII/B.29-060

VIII: SILIKATE
B: Inselsilikate mit tetraederfremden Anionen
29: Kationen mit Koordinationszahlen zwischen [8] und [12]; Beryllium- und Bor-Inselsilikate; Datolith/Gadolinit-Gruppe

Classification by Hölzel

9.AK.345

9: SILICATES
A: Nesosilicates
K: Boro and Beryllo Nesosilicates
3: Gadolinite-Group (with REE's)

Dana 8th edition

54.02.01b.02

54: Nesosilicates Nesosilicate Borosilicates and Some Beryllosilicates
02: Nesosilicates Nesosilicate Borosilicates and Some Beryllosilicates with B in [4] coordination
01b: Datolite group (Homilite series)

IMA status

anerkannt 1978

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Gadolinite supergroup  ⇒ Gadolinite Group  ⇒ Gadolinite subgroup

Optical Properties

Color

schwarz

Streak color

grünlich grau

Diaphaneity (Transparency)

transparent

RI value α / ω / n

1.78

RI value β

metam.

Ri mean

1.78

2V angle

Isotropisch

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/c

Cell parameters a (Å)

4.82

Cell parameters b (Å)

7.58

Cell parameters c (Å)

10.01

Cell parameters a/b or c/a

0.636

Cell parameters c/b

1.321

Cell parameters α

90°

Cell parameters β

90.47

Cell parameters γ

90°

Z

2

Volume (ų)

365.709

X-Ray Powder Diffraction

4.81(90),
3.59(60),
3.18(70),
3.17(60),
3.00(70),
2.88(100),
2.60(80),
2.59(80)
XRD chart Gadolinite-(Ce)

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

Crystals 3D

Open larger view

Physical Properties

VHN (Hardness Vickers)

730 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

4.9 (berechnet) 4.2 (gemessen)

5.178 ( ρ calc. Mineralienatlas )

Instability

++ warme konz. HCl

(Co-)Type locality

(Co-)Type locality

Norwegen/Vestfold, Provinz/Porsgrunn, Kommune/Bjorkedalen/Buer

Preface

Name from
Johan Gadolin
Johan Gadolin
1760-1852;
Entdecker von Y
Copyright: Archiv: Peter Seroka (Collector); Contribution: Collector
Image: 1320014856
License: Public Domain

Johan Gadolin (geboren am 5. Juni 1760 in Åbo (finn. Turku); † 15. August 1852 in Virmo (finn. Mynämäki) war ein finnischer Chemiker. Er entdeckte 1794 Yttrium das erste chemische Element aus der Gruppe der Selten-Erden. WikiPedia:Johan_Gadolin

Author (Name, Year)

Segalstad & Larsen, 1978

References

American Mineralogist, Volume 63, pages 188-195, 1978

IMA group assignments

Other languages

German

Gadolinit-(Ce)

Spanish

Gadolinita-(Ce)

English

Gadolinite-(Ce)

French

Gadolinite-(Ce)

Russian

Гадолинит-(Ce)

Traditional Chinese

矽鈹鈰礦

Simplified Chinese

硅铍铈矿

Japanese

ｾﾘｳﾑｶﾞﾄﾞﾘﾝ石

CNMNC symbol

Symbol

Gad-Ce

Locations with GPS information

IDs

GUSID (Global unique identifier short form) 1Z7DYvtXYUCZa-ZMJAsM0A
GUID (Global unique identifier) 62C39ED5-57FB-4061-996B-E64C240B0CD0
Database ID 1310