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Marécottite

Pictures (4 Images total)

Marécottite
Views (Image: 1388502340): 2149, Rating: 8.71
Marécottite

Fundort: Einigkeit (Svornost), Jáchymov (St. Joachimsthal), Erzgebirge, Karlsbad, Tschechien. FOV 2,5 mm.

Copyright: Pavel Škácha, Czechmin
Contribution: Stefan 2013-12-31
Locality: Einigkeit (Svornost) / St. Joachimsthal (Jáchymov) / Karlsbad (Karlovy Vary), Bezirk / Karlsbad, Region (Karlovarsky kraj) / Tschechien
Marécottit
Views (Image: 1444306957): 461
Marécottit

Bildbreite: 2,7 mm, Fundort: Werner Mine (Rovnost), St. Joachimsthal (Jáchymov), Region Karlsbad (Karlovarsky kraj), Tschechien

Copyright: Jason B. Smith
Contribution: thdun5 2015-10-08
Locality: Werner Mine (Rovnost) / St. Joachimsthal (Jáchymov) / Karlsbad (Karlovy Vary), Bezirk / Karlsbad, Region (Karlovarsky kraj) / Tschechien
Marécottit
Views (Image: 1444414999): 542
Marécottit

Bildbreite: 3 mm, Fundort: St. Joachimsthal (Jáchymov), Region Karlsbad (Karlovarsky kraj), Tschechien

Copyright: Leonardus
Contribution: thdun5 2015-10-09
Locality: St. Joachimsthal (Jáchymov) / Karlsbad (Karlovy Vary), Bezirk / Karlsbad, Region (Karlovarsky kraj) / Tschechien
Marécottit
Views (Image: 1444415082): 520
Marécottit

Bildbreite: 3 mm, Fundort: St. Joachimsthal (Jáchymov), Region Karlsbad (Karlovarsky kraj), Tschechien

Copyright: Luigi Chiappino
Contribution: thdun5 2015-10-09
Locality: St. Joachimsthal (Jáchymov) / Karlsbad (Karlovy Vary), Bezirk / Karlsbad, Region (Karlovarsky kraj) / Tschechien

Collectors Summary

Color orangegelb, rötlichgelb
Streak color weiß
Hardness (Mohs) 3
Cleavages vollkommen {011}
Crystal System triklin, P1

Chemism

Chem­ical formula

Mg3[(UO2)4O3(OH)(SO4)2]2(H2O)28

Empir­ical formula (anal­y­sis)

[(Na0.05K0.07)Σ0.12 (Mg1.83Zn0.41Mn0.41Cu0.15Ni0.08)Σ2.88 Al0.07]Σ3.07 (UO2)8[(SO4)3.77(SiO4)0.21]Σ3.98 O6(OH)1.84·28H2O

Chem­ical com­po­si­tion

Magnesium, Sauerstoff, Schwefel, Uran, Wasserstoff

Unit weight: 3360.006209823 u; Number of atoms in the formula: 144.6

Info

Empirical formula:

[(Na0.05K0.07)(Mg1.83Zn0.41Mn0.41Cu0.15Ni0.08)Al0.07](UO2)8[(SO4)3.77(SiO4)0.21]O6(OH)1.84·28H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

1.74

57.84

40.00

1.0079470

58.2996545

Oxygen

O

33.77

70.92

49.05

15.9994300

1,134.6795756

Sodium

Na

0.03

0.05

0.03

22.9897702

1.1494885

Magnesium

Mg

1.32

1.83

1.27

24.3050600

44.4782598

Aluminium

Al

0.06

0.07

0.05

26.9815382

1.8887077

Silicon

Si

0.84

1

0.69

28.0855300

28.0855300

Sulfur

S

3.60

3.77

2.61

32.0655000

120.8869350

Potassium

K

0.08

0.07

0.05

39.0983100

2.7368817

Manganese

Mn

0.67

0.41

0.28

54.9380499

22.5246005

Nickel

Ni

0.14

0.08

0.06

58.6934200

4.6954736

Copper

Cu

0.28

0.15

0.10

63.5463000

9.5319450

Zinc

Zn

0.80

0.41

0.28

65.4094000

26.8178540

Uranium

U

56.67

8

5.53

238.0289130

1,904.2313040

Strunz 9th edi­tion incl. updates

7.EC.15

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
E: Uranylsulfate
C: Mit mittelgroßen und großen [Kationen]
15:

Lapis Clas­sifica­tion

VI/D.20-080

VI: SULFATE, CHROMATE, MOLYBDATE UND WOLFRAMATE
D: Wasserhaltige Sulfate, mit fremden Anionen
20: Uranylsulfate [UO2] 2+ – [SO4] 2-

Clas­sifica­tion by Hölzel

7.ED.200

7: SULFATES CHROMATES MOLYBDATES WOLFRAMATES
E: Uranyl-Sulfates
D: Uranyl-Sulfates (+Anions +Water)

Dana 8th edi­tion

31.10.04.07

31: Hydrated Sulfates Containing Hydroxyl or Halogen
10: Hydrated Sulfates Containing Hydroxyl or Halogen miscellaneous
04: Zippeite Group

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Zippeite group

Optical Properties

Color

orangegelb, rötlichgelb

Streak color

weiß

RI value α / ω / n

1.735

RI value γ / ε

1.750

Ri mean

1.743

2V angle

Biaxial

Crystallography

Crystal Sys­tem

triklin

Class (H-M)

1

Space Group number

2

Space Group

P1

Cell param­e­ters a (Å)

10.8084(2)

Cell param­e­ters b (Å)

11.2519(3)

Cell param­e­ters c (Å)

13.8465(3)

Cell param­e­ters a/b or c/a

0.961

Cell param­e­ters c/b

1.231

Cell param­e­ters α

66.222(2)°

Cell param­e­ters β

72.424(2)°

Cell param­e­ters γ

70.014(2)°

Z

1

Volumne (ų)

1421.566

Kristall struc­ture

Mg-dominates Mitglied der Zippeit-Gruppe

X-Ray Pow­der Diffrac­tion

9.46(100),
8.63(20),
6.46(20),
6.33(20),
4.73(80),
3.44(80),
3.39(70),
2.88(30)

XRD chart Marécottite

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)

3

VHN (Hard­ness Vick­ers)

83 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.83 (berechnet) 4.03 (gemessen)

3.925 ( ρ calc. Mineralienatlas )

Cleav­ages

vollkommen {011}

Tenac­ity

sehr spröde

(Co-)Type locality

(Co-)Type locality

Schweiz/Wallis, Kanton/Saint-Maurice, Bezirk/Salvan/La Creusaz/Uranprospekt

Type mate­r­ial

Musée Géologique Cantonal at Lausanne, Schweiz

Preface

Name from

Für das Dorf Les Marécottes, dessen Kirche ca. 1100 Meter von der Typuslokalität entfernt ist.

Author (Name, Year)

Brugger & Burns & Meisser, 2003

References

American Mineralogist 88 (2003), 676

Plášil, J.; Škoda, R. - New crystal-chemical data for marécottite - Mineralogical Magazine 30. Juli 2015 (online)

IMA group assignments


 
 
Co(UO2)2(SO4)O2·3.5H2O
monoklin
C2/m

 
 
Mg(UO2)2(SO4)O2·3.5H2O
monoklin
C2/m

 
 
Mg3[(UO2)4O3(OH)(SO4)2]2(H2O)28
triklin
P1

 
 
Na5(UO2)8(SO4)4O5(OH)3·12H2O
monoklin
P21/n

 
 
Ni2(UO2)6(SO4)3(OH)10·16H2O
monoklin
C2/m

 
 
K0.8Mn0.6[(UO2)2O2(SO4)]·3.5H2O
monoklin
C2/c

 
 
Cu6.5(UO2)8O8(SO4)4(OH)5·25H2O
triklin
P1

 
 
Ca2[(UO2)4O4(SO4)2](H2O)8
triklin
P1

 
 
Y2(UO2)8O6(SO4)4(OH)2·26H2O
triklin
P1

 
 
Zn(UO2)2(SO4)O2·3.5H2O
monoklin
C2/m

 
 
K3(UO2)4(SO4)2O3(OH)·3H2O
monoklin
C2

Refresh list

Actuality: 26. Feb 2021 - 13:32:16

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

Sejkoraite-(Y)

Y2(UO2)8O6(SO4)4(OH)2·26H2O

triklin : 1 : P1

7.EC.15

Marécottite

Mg3[(UO2)4O3(OH)(SO4)2]2(H2O)28

triklin : 1 : P1

7.EC.15

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

Jáchymovite

(UO2)8(OH)14(SO4)·13H2O

monoklin : 2, 2/m : P21, P21/m

VI/D.20-005

Uranopilite

(UO2)6SO4O2(OH)6·14H2O

triklin : 1 : P1

VI/D.20-010

Metauranopilite

(UO2)6SO4(OH)10·5H2O

VI/D.20-020

Mathesiusite

K5(UO2)4(SO4)4(VO5)·4H2O

tetragonal : 4/m : P4/n

VI/D.20-024

Adolfpateraite

K(UO2)(SO4)(OH)(H2O)

monoklin : 2/m : P21/c

VI/D.20-025

Natrozippeite

Na5(UO2)8(SO4)4O5(OH)3·12H2O

monoklin : 2/m : P21/n

VI/D.20-030

Zippeite

K3(UO2)4(SO4)2O3(OH)·3H2O

monoklin : 2 : C2

VI/D.20-040

Nickelzippeite

Ni2(UO2)6(SO4)3(OH)10·16H2O

monoklin : 2/m : C2/m

VI/D.20-050

Cobaltzippeite

Co(UO2)2(SO4)O2·3.5H2O

monoklin : 2/m : C2/m

VI/D.20-060

Zinczippeite

Zn(UO2)2(SO4)O2·3.5H2O

monoklin : 2/m : C2/m

VI/D.20-070

Magnesiozippeite

Mg(UO2)2(SO4)O2·3.5H2O

monoklin : 2/m : C2/m

VI/D.20-075

Marécottite

Mg3[(UO2)4O3(OH)(SO4)2]2(H2O)28

triklin : 1 : P1

VI/D.20-080

Sejkoraite-(Y)

Y2(UO2)8O6(SO4)4(OH)2·26H2O

triklin : 1 : P1

VI/D.20-085

Rabejacite

Ca2[(UO2)4O4(SO4)2](H2O)8

triklin : 1 : P1

VI/D.20-090

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

Marécottite

Mg3[(UO2)4O3(OH)(SO4)2]2(H2O)28

triklin : 1 : P1

7.ED.200

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Ettringite

Ca6Al2(SO4)3(OH)12·26H2O

trigonal : 3m : P31c

31.10.02.01

Bentorite

Ca6(Cr,Al)2(SO4)3(OH)12·26 H2O

31.10.02.02

Buryatite

Ca3(Si,Fe3+,Al)(SO4)B(OH)4(OH,O)6·12H2O

trigonal : 3m : P31c

31.10.02.03

Zaherite

Al12(SO4)5(OH)26·20H2O

triklin : 1, 1 : P1, P1

31.10.03.01

Zippeite

K3(UO2)4(SO4)2O3(OH)·3H2O

monoklin : 2 : C2

31.10.04.01

Natrozippeite

Na5(UO2)8(SO4)4O5(OH)3·12H2O

monoklin : 2/m : P21/n

31.10.04.02

Magnesiozippeite

Mg(UO2)2(SO4)O2·3.5H2O

monoklin : 2/m : C2/m

31.10.04.03

Nickelzippeite

Ni2(UO2)6(SO4)3(OH)10·16H2O

monoklin : 2/m : C2/m

31.10.04.04

Zinczippeite

Zn(UO2)2(SO4)O2·3.5H2O

monoklin : 2/m : C2/m

31.10.04.05

Cobaltzippeite

Co(UO2)2(SO4)O2·3.5H2O

monoklin : 2/m : C2/m

31.10.04.06

Marécottite

Mg3[(UO2)4O3(OH)(SO4)2]2(H2O)28

triklin : 1 : P1

31.10.04.07

Copiapite

Fe2+Fe43+(SO4)6(OH)2·20H2O

triklin : 1 : P1

31.10.05.01

Magnesiocopiapite

MgFe43+(SO4)6(OH)2·20H2O

triklin : 1 : P1

31.10.05.02

Cuprocopiapite

CuFe43+(SO4)6(OH)2·20H2O

triklin : 1 : P1

31.10.05.03

Ferricopiapite

Fe2-33+Fe43+(SO4)6(OH)2·20H2O

triklin : 1 : P1

31.10.05.04

Calciocopiapite

CaFe43+(SO4)6(OH)2·19 H2O

triklin : 1 : P1

31.10.05.05

Zincocopiapite

ZnFe43+(SO4)6(OH)2·18H2O

triklin : 1 : P1

31.10.05.06

Aluminocopiapite

(Al,Mg)Fe3+4(SO4)6(OH,O)2·20H2O

triklin : 1 : P1

31.10.05.07

Clairite

(NH4)2(Fe3+,Mn3+)3(SO4)4(OH)3·3H2O

31.10.08.01

Caminite

Mg1.4(SO4)(OH)0.8·0.2H2O

tetragonal : 4/mmm : I41/amd

31.10.09.01

Other languages

German

Marécottit

Spanish

Marécottita

English

Marécottite

French

Marécottite

Russian

Марекоттит

IMA Number

IMA 2001-056

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