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Gjerdingenite-Fe

Pictures (4 Images total)

Gjerdingenit-Fe
Views (File:
1217398982
): 1441
Gjerdingenit-Fe
Bildbreite: 3 mm; Fundort: Gjerdingen, Nordmarka, Lunner, Oppland, Norwegen
Copyright: Leonardus; Contribution: Philip Blümner
Location: Norwegen/Akershus, Provinz/Lunner, Kommune/Nordmarka/Gjerdingen
Mineral: Gjerdingenite-Fe
Image: 1217398982
Rating: 6.33 (votes: 3)
License: Usage for Mineralienatlas project only
Gjerdingenit-Fe

Bildbreite: 3 mm; Fundort: Gjerdingen, Nordmarka, Lunner, Oppland, Norwegen
Copyright: Leonardus
Contribution: Philip Blümner 2008-07-30
Locality: Gjerdingen / Nordmarka / Lunner, Kommune / Akershus, Provinz / Norwegen
Gjerdingenit-Fe
Views (File:
1393703727
): 640
Gjerdingenit-Fe
Dicktafelige orange Kristalle, BB = 3,8 mm; Fundort: Gjerdingselva, Gjerdingen, Nordmarken, Norwegen.
Copyright: Bebo; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A013747, Donator: Manfred Seitz
Location: Norwegen/Akershus, Provinz/Lunner, Kommune/Nordmarka/Gjerdingen
Mineral: Gjerdingenite-Fe
Image: 1393703727
License: Usage for Mineralienatlas project only
Gjerdingenit-Fe (SNr: A013747)

Dicktafelige orange Kristalle, BB = 3,8 mm; Fundort: Gjerdingselva, Gjerdingen, Nordmarken, Norwegen.
Collection: Lithothek der Münchener Micromounter
Copyright: Bebo
Contribution: Münchener Micromounter 2014-03-01
Locality: Gjerdingen / Nordmarka / Lunner, Kommune / Akershus, Provinz / Norwegen
Gjerdingenit-Fe
Views (File:
1511886505
): 316
Gjerdingenit-Fe
Gjerdingenit-Fe zusammen mit Hämatit von Gjerdingen, Nordmarka, Norwegen. Bildhöhe etwa 3,5 mm. Ex. Coll. Gunnar Raade.
Copyright: Klaus Schäfer; Contribution: Klaus Schäfer
Collection: Klaus Schäfer, Collection number: GjGjFe-1-1-1
Location: Norwegen/Akershus, Provinz/Lunner, Kommune/Nordmarka/Gjerdingen
Mineral: Gjerdingenite-Fe
Image: 1511886505
License: Usage for Mineralienatlas project only
Gjerdingenit-Fe (SNr: GjGjFe-1-1-1)

Gjerdingenit-Fe zusammen mit Hämatit von Gjerdingen, Nordmarka, Norwegen. Bildhöhe etwa 3,5 mm. Ex. Coll. Gunnar Raade.
Collection: Klaus Schäfer
Copyright: Klaus Schäfer
Contribution: Klaus Schäfer 2017-11-28
Locality: Gjerdingen / Nordmarka / Lunner, Kommune / Akershus, Provinz / Norwegen
Gjerdingenit-Fe
Views (File:
1511886534
): 498
Gjerdingenit-Fe
Gjerdingenit-Fe zusammen mit nadeligen Lorenzenitkristallen, die von kleinen , farblosen Sellaitkristallen besetzt sind, von Gjerdingen, Nordmarka, Norwegen. Bildhöhe etwa 3 mm. Ex. Coll. Gunnar Raade.
Copyright: Klaus Schäfer; Contribution: Klaus Schäfer
Collection: Klaus Schäfer
Location: Norwegen/Akershus, Provinz/Lunner, Kommune/Nordmarka/Gjerdingen
Mineral: Gjerdingenite-Fe, Lorenzenite, Sellaite
Image: 1511886534
License: Usage for Mineralienatlas project only
Gjerdingenit-Fe

Gjerdingenit-Fe zusammen mit nadeligen Lorenzenitkristallen, die von kleinen , farblosen Sellaitkristallen besetzt sind, von Gjerdingen, Nordmarka, Norwegen. Bildhöhe etwa 3 mm. Ex. Coll. Gunnar Ra...
Collection: Klaus Schäfer
Copyright: Klaus Schäfer
Contribution: Klaus Schäfer 2017-11-28
Locality: Gjerdingen / Nordmarka / Lunner, Kommune / Akershus, Provinz / Norwegen

You find additional specimen at the Geolitho Museum

Collectors Summary

Color farblos
Streak color weiß
Lustre Glasglanz, Wachsglanz
Hardness (Mohs) 5
Cleavages keine
Fracture uneben
Crystal System monoklin, C2/m

Chemism

Chemical formula

K2(Fe2+,Mn2+)(Ti,Nb)4[(O,OH)2|Si4O12]2·7-8H2O

Chemical composition

Eisen, Mangan, Niob, Silicium, Titan, Kalium, Sauerstoff, Wasserstoff

Unit weight: 1234.2787089 u; Number of atoms in the formula: 67.5

Info

Empirical formula:

K2(FeMn)(Ti0.75Nb0.25)4[(O0.75(OH)0.25)2Si4O12]2·7.5H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

1.31

16

23.70

1.0079470

16.1271520
Oxygen

O

46.02

35.5

52.59

15.9994300

567.9797650
Silicon

Si

18.20

8

11.85

28.0855300

224.6842400
Potassium

K

6.34

2

2.96

39.0983100

78.1966200
Titanium

Ti

11.63

3

4.44

47.8671000

143.6013000
Manganese

Mn

4.45

1

1.48

54.9380499

54.9380499
Iron

Fe

4.52

1

1.48

55.8452000

55.8452000
Niobium

Nb

7.53

1

1.48

92.9063820

92.9063820

Strunz 9th edition incl. updates

9.CE.30

9: Silikate (Germanate)
C: Ringsilikate (Cyclosilikate)
E: [Si4O12]8- vierer-Einfachringe, ohne inselartige komplexe [Anionen]
30:Labuntsovit-Gruppe

Lapis Classification

VIII/E.07-070

VIII: SILIKATE
E: Ringsilikate
7: Viererringe [Si4O12] 8-; Labuntsovit-Gruppe

Classification by Hölzel

9.CB.563

9: SILICATES
C: Cyclosilicates
B: ~[Si4O12]8-, ~[Si4O10]4--Rings
5: Labuntsovite-Subgroup - Monoclinic, c=~~8

Dana 8th edition

60.01.03.01

60: Cyclosilicates Cyclosilicate Four-Membered Rings
01: Cyclosilicates Cyclosilicate Four-Membered Rings as Titanosilicates

IMA Classification

IMA Classification

 Labuntsovite supergroup  ⇒ Kuzmenkoite group

Optical Properties

Color

farblos

Streak color

weiß

Diaphaneity (Transparency)

transparent bis durchscheinend

Lustre

Glasglanz, Wachsglanz

max. Birefringence

0.126
Birefringence chart\! Gjerdingenite-Fe title=Birefringence chart Gjerdingenite-Fe

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

1.668

RI value β

1.700

RI value γ / ε

1.794

Ri mean

1.721

2V angle

Biaxial (+) 59°

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell parameters a (Å)

14.529

Cell parameters b (Å)

13.943

Cell parameters c (Å)

7.837

Cell parameters a/b or c/a

1.042

Cell parameters c/b

0.562

Cell parameters α

90°

Cell parameters β

117.62

Cell parameters γ

90°

Z

2

Volume (ų)

1406.682

X-Ray Powder Diffraction

6.92(80),
6.42(50),
4.94(70),
3.225(100),
3.114(80),
3.069(20),
2.928(20),
2.512(50)
XRD chart Gjerdingenite-Fe

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)

5

VHN (Hardness Vickers)

390 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.8

2.914 ( ρ calc. Mineralienatlas )

Cleavages

keine

Fracture

uneben

Tenacity

sehr spröde

(Co-)Type locality

(Co-)Type locality

Norwegen/Akershus, Provinz/Lunner, Kommune/Nordmarka/Gjerdingen

Preface

Author (Name, Year)

Raade & Ferraris & Gula & Ivaldi, 2002

References

Canadian Mineralogist 40 (2002), 1629.

American Mineralogist 88 (2003), 1837.

IMA group assignments

 
Labuntsovite supergroup
 
 
 

 
 
Kuzmenkoite group
 
 
 

 
 
 
Gjerdingenite-Ca
K2Ca(Nb,Ti)4(Si4O12)2(O,OH)4·6H2O
monoklin
 

 
 
 
Gjerdingenite-Fe
K2(Fe2+,Mn2+)(Ti,Nb)4[(O,OH)2|Si4O12]2·7-8H2O
monoklin
C2/m

 
 
 
Gjerdingenite-Mn
K2Mn(Nb,Ti)4(Si4O12)2(O,OH)4·6H2O
monoklin
C2/m

 
 
 
Gjerdingenite-Na
K2Na2(Nb,Ti)4[(OH,O)2|Si4O12]2·5H2O
monoklin
 

 
 
 
Karupmøllerite-Ca
(Na,Ca,K)2Ca(Nb,Ti)4(Si4O12)2(O,OH)4·7H2O
monoklin
C2/m

 
 
 
Kuzmenkoite-Mn
K2MnTi4(Si4O12)2(OH)4·5-6H2O
monoklin
C2/m

 
 
 
Kuzmenkoite-Zn
K2ZnTi4(Si4O12)2(OH)4·6-8H2O
monoklin
Cm

 
 
 
Lepkhenelmite-Zn
Ba2Zn(Ti,Nb)4(Si4O12)2(O,OH)4·7H2O
monoklin
Cm

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Actuality: 06. Sep 2024 - 17:54:13

Other languages

German

Gjerdingenit-Fe

Spanish

Gjerdingenita-Fe

English

Gjerdingenite-Fe

Russian

Гьердингенит-Fe

Simplified Chinese

耶尔丁根石

Traditional Chinese

耶爾丁根石

CNMNC (IMA)-Number

IMA 2001-009

CNMNC symbol

Symbol

Gje-Fe

IDs

GUSID (Global unique identifier short form) f6ka1_M2z0CN7Y7hjSIBcg
GUID (Global unique identifier) D71AA97F-36F3-40CF-8DED-8EE18D220172
Database ID 1393