'._('einklappen').'
 

Montdorite

Pictures (1 Images total)

Montdorit
Views (Image: 1586716715): 131
Montdorit

schwarze Aggreagte von Montdorit in Matrix, Charlannes, La Bourboule, Puy-de-Dôme, Auvergne-Rhône-Alpes, Frankreich; BB 4 mm

Copyright: Joy Desor
Contribution: openpit 2020-04-12
Locality: Charlannes / La Bourboule / Le Sancy, Kanton / Issoire, Arrondissement / Puy-de-Dôme, Département / Auvergne-Rhône-Alpes, Region / Frankreich

Collectors Summary

Color grün, bräunlich grün
Crystal System monoklin, C2/m

Chemism

Chem­ical formula

KMn0.52+Fe1.52+Mg0.5[F2|Si4O10]

Chem­ical com­po­si­tion

Eisen, Magnesium, Mangan, Silicium, Fluor, Kalium, Sauerstoff

Unit weight: 472.82089145 u; Number of atoms in the formula: 19.5

Info

Empirical formula:

KMn0.5Fe1.5Mg0.5[F2Si4O10]

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

33.84

10

51.28

15.9994300

159.9943000

Fluorine

F

8.04

2

10.26

18.9984033

37.9968065

Magnesium

Mg

2.57

0.5

2.56

24.3050600

12.1525300

Silicon

Si

23.76

4

20.51

28.0855300

112.3421200

Potassium

K

8.27

1

5.13

39.0983100

39.0983100

Manganese

Mn

5.81

0.5

2.56

54.9380499

27.4690250

Iron

Fe

17.72

1.5

7.69

55.8452000

83.7678000

Strunz 9th edi­tion incl. updates

9.EC.15

9: Silikate (Germanate)
E: Schichtsilikate (Phyllosilikate)
C: Schichtsilikate (Phyllosilikate) mit Glimmer Tafeln, zusammengesetzt aus tetrahedralen oder octahedralen Netzen
15:Muskovit-Gruppe

Lapis Clas­sifica­tion

VIII/H.11-040

VIII: SILIKATE
H: Schichtsilikate
11: Glimmerartige Schicht-silikate mit Baugruppen [Si4O10] 4- und verwandte Strukturen; Glimmer-Gruppe; Lithionit/Biotit-Reihe

Clas­sifica­tion by Hölzel

9.ED.360

9: SILICATES
E: Phyllosilicates
D: Biotite-Group

IMA sta­tus

Neudefinition von der CNMNC anerkannt

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Mica group  ⇒ True micas

Optical Properties

Color

grün, bräunlich grün

Diaphane­ity (Trans­parency)

durchscheinend

max. Birefrin­gence

0.025

Birefringence chart\! Montdorite title=Birefringence chart Montdorite

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

1.580

RI value β

1.605

RI value γ / ε

1.605

Ri mean

1.597

2V angle

Biaxial (-) 0°

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell param­e­ters a (Å)

5.310

Cell param­e­ters b (Å)

9.20

Cell param­e­ters c (Å)

10.175

Cell param­e­ters a/b or c/a

0.577

Cell param­e­ters c/b

1.106

Cell param­e­ters α

90°

Cell param­e­ters β

99.90

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

489.667

X-Ray Pow­der Diffrac­tion

9.97(40),
3.41(30),
3.339(100),
3.142(30),
2.710(30),
2.519(40),
2.003(30),
1.669(30)

XRD chart Montdorite

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

Physical Properties

Density (g/cm³)

3.15 (gemessen)

3.207 ( ρ calc. Mineralienatlas )

Preface

Author (Name, Year)

Robert & Maury, 1979

References

Canadian Mineralogist 36 (1998), 905

IMA group assignments

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

'Sericite' (Var.v. Muscovite)

9.EC.15

Ganterite

(Ba,Na,K)(Al,Mg)2[(OH,F)2|(Al,Si)Si2O10]

monoklin : 2/m : C2/c

9.EC.15

Muscovite

KAl2(Si3Al)O10(OH,F)2

monoklin : 2/m : C2/c

9.EC.15

Tobelite

(NH4,K)Al2(Si3Al)O10(OH)2

monoklin : 2/m : C2/m

9.EC.15

'Glauconite'

(K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2

monoklin : 2/m : C2/m

9.EC.15

Montdorite

KMn0.52+Fe1.52+Mg0.5[F2|Si4O10]

monoklin : 2/m : C2/m

9.EC.15

Nanpingite

CsAl2(Si,Al)4O10(OH,F)2

monoklin : 2/m : C2/c

9.EC.15

Paragonite

NaAl2(Si3Al)O10(OH)2

monoklin : 2/m : C2/c

9.EC.15

Celadonite

K(Mg,Fe2+)(Fe3+,Al)Si4O10(OH)2

monoklin : 2 : C2

9.EC.15

Chernykhite

BaV2(Si2Al2)O10(OH)2

monoklin : 2/m : C2/c

9.EC.15

Roscoelite

K(V,Al,Mg)2AlSi3O10(OH)2

monoklin : 2/m : C2/m

9.EC.15

Tainiolite

KLiMg2Si4O10F2

monoklin : 2/m : C/2m

9.EC.15

Voloshinite

Rb(LiAl1.50.5)(Al0.5Si3.5)O10F2

monoklin : C2/c

9.EC.15

Cossaite

(Mg0.5,◻)Al6(SO4)6(HSO4)F6·36H2O

trigonal : 3 : R3

9.EC.15

'Muscovite-1M' (Pol.v. Muscovite)

KAl2(Si3Al)O10(OH,F)2

monoklin : 2/m : C2/m

9.EC.15

'Muscovite-2A' (Pol.v. Muscovite)

KAl2(Si3Al)O10(OH,F)2

triklin : 1 : C1

9.EC.15

'Boromuscovite'

KAl2(Si3B)O10(OH,F)2

monoklin : 2/m : C2/m

9.EC.15

Chromphyllite

K(Cr,Al)2[(OH,F)2|AlSi3O10]

monoklin : 2/m : C2/c

9.EC.15

'Muscovite-3T' (Pol.v. Muscovite)

KAl2(Si3Al)O10(OH,F)2

trigonal : 32 : P3112

9.EC.15

'Muscovite-2M2' (Pol.v. Muscovite)

KAl2(Si3Al)O10(OH,F)2

monoklin : 2/m

9.EC.15

Chromceladonite

KMgCr[(OH)2|Si4O10]

monoklin : 2 : C2

9.EC.15

Ferroceladonite

K(Fe2+,Mg)(Fe3+,Al)[(OH)2|Si4O10]

monoklin : 2/m : C2/m

9.EC.15

Aluminoceladonite

K(Mg,Fe2+)Al[(OH)2|Si4O10]

9.EC.15

Manganiceladonite

KMgMn3+Si4O10(OH)2

monoklin : 2/m, 2 : C2, C2/m

9.EC.15

'Zweiaxiger glimmer'

KAl2(Si,Al)4O10(OH)2

9.EC.15

Ferroaluminoceladonite

K(Fe2+,Mg)(Al,Fe3+)[(OH)2|Si4O10]

monoklin : 2/m : C2/m

9.EC.15

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

Polylithionite

KLi2AlSi4O10(F,OH)2

monoklin : 2/m : C2/m

VIII/H.11-010

Orlovite

KLi2TiSi4O11F

monoklin : 2 : C2

VIII/H.11-012

Sokolovaite

CsLi2AlSi4O10F2

VIII/H.11-015

Yangzhumingite

KMg2.5Si4O10F2

monoklin : 2/m : C2/m

VIII/H.11-018

Tainiolite

KLiMg2Si4O10F2

monoklin : 2/m : C/2m

VIII/H.11-020

Norrishite

KLiMn3+2Si4O12

monoklin : 2/m : C2/m

VIII/H.11-030

Shirokshinite

KNaMg2[F2|Si4O10]

monoklin : 2/m : C2/m

VIII/H.11-035

Montdorite

KMn0.52+Fe1.52+Mg0.5[F2|Si4O10]

monoklin : 2/m : C2/m

VIII/H.11-040

Trilithionite

KLi1.5Al1.5[F2|AlSi3O10]

monoklin : 2/m : C2/m

VIII/H.11-050

Voloshinite

Rb(LiAl1.50.5)(Al0.5Si3.5)O10F2

monoklin : C2/c

VIII/H.11-055

Masutomilite

K(Li,Al,Mn2+)3(Si,Al)4O10(F,OH)2

monoklin : 2 : C2

VIII/H.11-060

Aspidolite-1M

NaMg3(AlSi3)O10(OH)2

monoklin : 2/m : C2/m

VIII/H.11-070

Oxyphlogopite

K(Mg,Ti,Fe)3[(Si,Al)4O10](O,F)2

monoklin : 2/m : C2/m

VIII/H.11-073

'Fluorphlogopite'

K(Mg,Fe2+)3(Si3Al)O10(F,OH)2

VIII/H.11-075

Phlogopite

KMg3(Si3Al)O10(F,OH)2

monoklin : 2/m : C2/m

VIII/H.11-080

Fluorotetraferriphlogopite

KMg3Fe3+Si3O10F2

monoklin : 2/m : C2/m

VIII/H.11-088

Tetraferriphlogopite

KMg3[(F,OH)2|(Al,Fe3+)Si3O10]

monoklin : 2/m : C2/m

VIII/H.11-090

Hendricksite

K(Zn,Mn)3Si3AlO10(OH)2

monoklin : 2/m : C2/m

VIII/H.11-100

'Shirozulite'

K(Mn2+,Mg)3[(OH)2|AlSi3O10]

VIII/H.11-102

Fluorannite

KFe32+[(F,OH)2|AlSi3O10]

monoklin : 2/m : C2/m

VIII/H.11-105

Annite

KFe2+3(Si3Al)O10(OH,F)2

monoklin : 2/m : C2/m

VIII/H.11-110

'Tetraferriannite'

KFe2+3(Si3Fe3+)O10(OH)2

monoklin : 2/m : C2/m

VIII/H.11-120

Suhailite

(NH4)(Fe2+)3(Si3Al)O10(OH)2

monoklin : C2/m ?

VIII/H.11-125

'Ephesite'

NaLiAl2(Al2Si2)O10(OH)2

monoklin : m : Cc

VIII/H.11-130

Preiswerkite

NaMg2Al3Si2O10(OH)2

monoklin : 2/m : C2/m

VIII/H.11-140

Eastonite

KMg2Al[(OH)2|Al2Si2O10]

monoklin : 2 : C2

VIII/H.11-150

Siderophyllite

KFe22+Al(Al2Si2)O10(F,OH)2

monoklin : 2 : C2/m

VIII/H.11-160

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

'Glauconite'

(K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2

monoklin : 2/m : C2/m

9.ED.300

Celadonite

K(Mg,Fe2+)(Fe3+,Al)Si4O10(OH)2

monoklin : 2 : C2

9.ED.320

Aluminoceladonite

K(Mg,Fe2+)Al[(OH)2|Si4O10]

9.ED.325

Ferroceladonite

K(Fe2+,Mg)(Fe3+,Al)[(OH)2|Si4O10]

monoklin : 2/m : C2/m

9.ED.330

Ferroaluminoceladonite

K(Fe2+,Mg)(Al,Fe3+)[(OH)2|Si4O10]

monoklin : 2/m : C2/m

9.ED.335

Chromceladonite

KMgCr[(OH)2|Si4O10]

monoklin : 2 : C2

9.ED.350

Montdorite

KMn0.52+Fe1.52+Mg0.5[F2|Si4O10]

monoklin : 2/m : C2/m

9.ED.360

Other languages

German

Montdorit

Spanish

Montdorita

English

Montdorite

French

Montdorite

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

German pages

DeWikiPedia - search for: Montdorit
Google-Bilder-Suche - search for: Montdorit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Montdorit

English pages

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

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Montdorit
Crystal-Treasure.com - search for: Montdorit
Bosse - search for: Montdorit