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Mereiterite

Pictures (1 Images total)

Mereiterit in Gips
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Mereiterit in Gips

Bildbreite: 3-4 mm; Hilarion Mine, Aghios Konstantinos Lavrion

Collection: UlrichW
Copyright: UlrichW
Contribution: Klinoklas 2007-06-19
Locality: Hilarion Mine (Hilarion-Stollen, Mine Nr. 50) / Kamariza / Lavrion (Laurion), Bergbaudistrikt / Attika (Attikí, Attica) / Griechenland

Collectors Summary

Color blassgelb
Streak color weiß
Hardness (Mohs) 2.50 - 3.00
Cleavages keine
Fracture muschelig
Solubility +++ H2O
Crystal System monoklin, C2/m

Chemism

Chem­ical formula

K2Fe2+[SO4]2·4H2O

Chem­ical com­po­si­tion

Eisen, Kalium, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 398.229556 u; Number of atoms in the formula: 25

Info

Empirical formula:

K2Fe[SO4]2·4H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

2.02

8

32.00

1.0079470

8.0635760

Oxygen

O

48.21

12

48.00

15.9994300

191.9931600

Sulfur

S

16.10

2

8.00

32.0655000

64.1310000

Potassium

K

19.64

2

8.00

39.0983100

78.1966200

Iron

Fe

14.02

1

4.00

55.8452000

55.8452000

Anal­y­sis wt%

K2O : 22.70, FeO : 17.88, SO3 : 40.22, H2O : 18.00 (Ref: European Journal of Mineralogy 95)

Strunz 9th edi­tion incl. updates

7.CC.55

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
C: Sulfate (Selenate, etc.) ohne weitere Anionen, mit H2O
C: Mit mittelgroßen und großen [Kationen]
55:Leonit-Gruppe

Lapis Clas­sifica­tion

VI/C.18-035

VI: SULFATE, CHROMATE, MOLYBDATE UND WOLFRAMATE
C: Wasserhaltige Sulfate, ohne fremde Anionen
18: Mittelgroße und sehr große Kationen

Clas­sifica­tion by Hölzel

7.CD.515

7: SULFATES CHROMATES MOLYBDATES WOLFRAMATES
C: Sulfates (-Anions +Water)
D: Sulfates, C medium + large
5: Blödite-Group

Dana 8th edi­tion

29.03.03.04

29: Hydrated Acid and Sulfates
03: Hydrated Acid and Sulfates where (A+)2 B (XO4)2 · x(H2O)
03: Blodite Group

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

blassgelb

Streak color

weiß

max. Birefrin­gence

0.012

Birefringence chart\! Mereiterite title=Birefringence chart Mereiterite

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

1.497

RI value β

1.501

RI value γ / ε

1.509

Ri mean

1.502

2V angle

Biaxial (+) 73°

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell param­e­ters a (Å)

11.841

Cell param­e­ters b (Å)

9.553

Cell param­e­ters c (Å)

9.942

Cell param­e­ters a/b or c/a

1.240

Cell param­e­ters c/b

1.041

Cell param­e­ters α

90°

Cell param­e­ters β

94.87

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

1120.55

X-Ray Pow­der Diffrac­tion

4.78(30),
3.505(50),
3.440(100),
3.331(50),
3.051(30),
2.405(30),
2.390(50),
1.968(20)

XRD chart Mereiterite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

2.50 - 3.00

VHN (Hard­ness Vick­ers)

68 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.36 (gemessen)

2.36 ( ρ calc. Mineralienatlas )

Cleav­ages

keine

Frac­ture

muschelig

Tenac­ity

sehr spröde

Insta­bil­ity

+++ H2O

Preface

Author (Name, Year)

Giester & Rieck, 1995

References

European Journal of Mineralogy 7 (1995), 559

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

Leonite

K2Mg(SO4)2·4H2O

monoklin : 2/m : C2/m

7.CC.55

Mereiterite

K2Fe2+[SO4]2·4H2O

monoklin : 2/m : C2/m

7.CC.55

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

Blödite

Na2Mg(SO4)2·4H2O

monoklin : 2/m : P21/a

VI/C.18-010

Nickelblödite

Na2(Ni,Mg)(SO4)2·4H2O

monoklin : 2/m : P21/a

VI/C.18-020

Changoite

Na2Zn[SO4]2·4H2O

monoklin : 2/m : P21/a

VI/C.18-025

Leonite

K2Mg(SO4)2·4H2O

monoklin : 2/m : C2/m

VI/C.18-030

Mereiterite

K2Fe2+[SO4]2·4H2O

monoklin : 2/m : C2/m

VI/C.18-035

Konyaite

Na2Mg(SO4)2·5H2O

monoklin : 2/m : P21/c

VI/C.18-040

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

Blödite

Na2Mg(SO4)2·4H2O

monoklin : 2/m : P21/a

7.CD.500

Leonite

K2Mg(SO4)2·4H2O

monoklin : 2/m : C2/m

7.CD.510

Mereiterite

K2Fe2+[SO4]2·4H2O

monoklin : 2/m : C2/m

7.CD.515

Nickelblödite

Na2(Ni,Mg)(SO4)2·4H2O

monoklin : 2/m : P21/a

7.CD.520

Manganoblödite

Na2Mn(SO4)2·4H2O

monoklin : 2/m : P21/a

7.CD.530

Goldichite

KFe3+(SO4)2·4H2O

monoklin : 2/m : P21/c

7.CD.570

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

Syngenite

K2Ca(SO4)2·H2O

monoklin : 2/m : P21/m

29.03.01.01

Koktaite

(NH4)2Ca(SO4)2·H2O

monoklin : 2/m : P21/m

29.03.01.02

Kröhnkite

Na2Cu(SO4)2· 2H2O

monoklin : 2/m : P21/c

29.03.02.01

Blödite

Na2Mg(SO4)2·4H2O

monoklin : 2/m : P21/a

29.03.03.01

Nickelblödite

Na2(Ni,Mg)(SO4)2·4H2O

monoklin : 2/m : P21/a

29.03.03.02

Leonite

K2Mg(SO4)2·4H2O

monoklin : 2/m : C2/m

29.03.03.03

Mereiterite

K2Fe2+[SO4]2·4H2O

monoklin : 2/m : C2/m

29.03.03.04

Changoite

Na2Zn[SO4]2·4H2O

monoklin : 2/m : P21/a

29.03.03.05

Konyaite

Na2Mg(SO4)2·5H2O

monoklin : 2/m : P21/c

29.03.05.01

Picromerite

K2Mg(SO4)2·6H2O

monoklin : 2/m : P21/a

29.03.06.01

Cyanochroite

K2Cu(SO4)·6H2O

monoklin : 2/m : P21/c

29.03.06.02

Mohrite

(NH4)2Fe2+(SO4)2·6H2O

monoklin : 2/m : P21/a

29.03.07.01

Boussingaultite

(NH4)2Mg(SO4)2·6H2O

monoklin : 2/m : P21/a

29.03.07.02

'Nickelboussingaultite'

(NH4)2(Ni,Mg)(SO4)2·6H2O

29.03.07.03

Mosesite

Hg2N(Cl,SO4,MoO4,CO3)·H2O

kubisch : 43m : F43m

29.03.08.01

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English

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Russian

Мерейтерит

IMA Number

IMA 1993-045

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