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Gjerdingenite-Mn (Gjerdingenit-Mn)

Additional Functions

Collectors Summary

Color orangegelb bis bräunlich
Lustre Glasglanz
Hardness (Mohs) 5
Cleavages keine
Fracture uneben
Crystal System monoklin, C2/m
Morphology Stabförmige Kristalle und Gruppen

Chemism

Chemical formula

K2Mn(Nb,Ti)4(Si4O12)2(O,OH)4·6H2O

Additional chem. information

Labuntsovit-Supergruppe

Chemical composition

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

Unit weight: 1241.4890869 u; Number of atoms in the formula: 62

Info

Empirical formula:

K2Mn(Nb0.75Ti0.25)4(Si4O12)2(O0.75(OH)0.25)4·6H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

1.06

13

20.97

1.0079470

13.1033110

Oxygen

O

43.82

34

54.84

15.9994300

543.9806200

Silicon

Si

18.10

8

12.90

28.0855300

224.6842400

Potassium

K

6.30

2

3.23

39.0983100

78.1966200

Titanium

Ti

3.86

1

1.61

47.8671000

47.8671000

Manganese

Mn

4.43

1

1.61

54.9380499

54.9380499

Niobium

Nb

22.45

3

4.84

92.9063820

278.7191460

Analysis wt%

SiO2 : 38.55, Nb2O5 : 31.74, TiO2 : 7.07, FeO : 2.03, MnO : 2.59, K2O : 5.83, Na2O : 1.45, H2O : 9.90 (Ref: European Journal of Mineralogy 2004)

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.07-080

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

Classification by Hölzel

9.CB.564

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

Dana 8th edition

60.01.03e.05

60: Cyclosilicates Cyclosilicate Four-Membered Rings
01: Cyclosilicates Cyclosilicate Four-Membered Rings as Titanosilicates
03e: Labuntsovite Group (Labuntsovite subgroup Monoclinic [C2/m])

IMA status

anerkannt 2003

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Labuntsovite supergroup  ⇒ Kuzmenkoite group

Optical Properties

Color

orangegelb bis bräunlich

Diaphaneity (Transparency)

transparent bis durchscheinend

Lustre

Glasglanz

max. Birefringence

0.105

Birefringence chart\! Gjerdingenite-Mn title=Birefringence chart Gjerdingenite-Mn

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

1.670

RI value β

1.685

RI value γ / ε

1.775

Ri mean

1.710

2V angle

Biaxial (+) 52°

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell parameters a (Å)

14.563

Cell parameters b (Å)

13.961

Cell parameters c (Å)

7.851

Cell parameters a/b or c/a

1.043

Cell parameters c/b

0.562

Cell parameters α

90°

Cell parameters β

117.62

Cell parameters γ

90°

Z

2

Volume (ų)

1414.316

X-Ray Powder Diffraction

6.96(100), 6.40(20), 4.94(80), 3.22(90), 3.10(80), 2.510(40)

XRD chart Gjerdingenite-Mn

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

Morphology

Stabförmige Kristalle und Gruppen

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)

2.93 (berechnet)

2.915 ( ρ calc. Mineralienatlas )

Cleavages

keine

Fracture

uneben

Tenacity

spröde

(Co-)Type locality

(Co-)Type locality

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

Type material

Typmaterial in Freiberg, Universität, Freiberg, Deutschland

Preface

Author (Name, Year)

Raade & Chukanov & Kolitsch & Möckel & Zadov & Pekov, 2004

References

European Journal of Mineralogy 16 (2004), 979-987.

American Mineralogist 90 (2005), 1227.

IMA group assignments



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

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

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

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

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

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

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

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

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Actuality: 29. Mar 2024 - 06:01:12

Other languages

German

Gjerdingenit-Mn

Spanish

Gjerdingenita-Mn

English

Gjerdingenite-Mn

French

Gjerdingenite-Mn

Russian

Гьердингенит-Mn

Traditional Chinese

錳耶爾丁根石

Simplified Chinese

锰耶尔丁根石

CNMNC (IMA)-Number

IMA 2003-015

CNMNC symbol

Symbol

Gje-Mn

IDs

GUSID (Global unique identifier short form) k_-_XlN-Dk2RMun6r6oSgQ
GUID (Global unique identifier) 5EBFFF93-7E53-4D0E-9132-E9FAAFAA1281
Database ID 1394