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Ferrohexahydrite

Collectors Summary

Color farblos
Streak color weiß
Solubility +++ H2O
Crystal System monoklin, C2/c

Chemism

Chem­ical formula

Fe2+SO4·6H2O

Chem­ical com­po­si­tion

Eisen, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 260.000364 u; Number of atoms in the formula: 24

Info

Empirical formula:

FeSO4·6H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

4.65

12

50.00

1.0079470

12.0953640

Oxygen

O

61.54

10

41.67

15.9994300

159.9943000

Sulfur

S

12.33

1

4.17

32.0655000

32.0655000

Iron

Fe

21.48

1

4.17

55.8452000

55.8452000

Anal­y­sis wt%

FeO : 27.63, SO3 : 30.79, H2O : 41.57 (Ref: berechnet)

Strunz 9th edi­tion incl. updates

7.CB.25

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
C: Sulfate (Selenate, etc.) ohne weitere Anionen, mit H2O
B: Mit ausschließlich mittelgroßen Kationen
25:Hexahydrit-Gruppe

Lapis Clas­sifica­tion

VI/C.05-020

VI: SULFATE, CHROMATE, MOLYBDATE UND WOLFRAMATE
C: Wasserhaltige Sulfate, ohne fremde Anionen
5: Mittelgroße Kationen; Hexahydrit-Gruppe

Clas­sifica­tion by Hölzel

7.CB.330

7: SULFATES CHROMATES MOLYBDATES WOLFRAMATES
C: Sulfates (-Anions +Water)
B: Vitriol-Group, Mg,Fe,Co,Ni,Mn,Cu,Zn-Sulfates with 4 to 7 Water
3: Hexahydrite-Group

Dana 8th edi­tion

29.06.08.03

29: Hydrated Acid and Sulfates
06: Hydrated Acid and Sulfates where A XO4 · x(H2O)
08: Hexahydrite Group (Space Group: C2/c)

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

farblos

Streak color

weiß

Diaphane­ity (Trans­parency)

transparent

max. Birefrin­gence

0.030

Birefringence chart\! Ferrohexahydrite title=Birefringence chart Ferrohexahydrite

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

1.468

RI value γ / ε

1.498

2V angle

Biaxial

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

15

Space Group

C2/c

Cell param­e­ters a (Å)

10.08

Cell param­e­ters b (Å)

7.28

Cell param­e­ters c (Å)

24.59

Cell param­e­ters a/b or c/a

1.385

Cell param­e­ters c/b

3.378

Cell param­e­ters α

90°

Cell param­e­ters β

98.37

Cell param­e­ters γ

90°

Z

8

Volumne (ų)

1785.253

X-Ray Pow­der Diffrac­tion

4.89(60),
4.43(100),
2.97(70),
2.93(70),
2.03(60),
1.881(60),
1.862(60),
1.202(60)

XRD chart Ferrohexahydrite

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

Physical Properties

Density (g/cm³)

1.934 (berechnet)

1.935 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ H2O

Preface

Author (Name, Year)

Alfani, 1935

References

Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 91 (1962), 490

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

Bianchite

(Zn,Fe2+)(SO4)·6H2O

monoklin : 2/m : C2/c

7.CB.25

Hexahydrite

MgSO4·6H2O

monoklin : 2/m : C2/c

7.CB.25

Moorhouseite

(Co,Ni,Mn)SO4·6H2O

monoklin : 2/m : C2/c

7.CB.25

Chvaleticeite

(Mn2+,Mg)SO4·6H2O

monoklin : 2/m : C2/c

7.CB.25

Ferrohexahydrite

Fe2+SO4·6H2O

monoklin : 2/m : C2/c

7.CB.25

Nickelhexahydrite

(Ni,Mg,Fe2+)(SO4)·6H2O

monoklin : 2/m : A2/a

7.CB.25

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

Hexahydrite

MgSO4·6H2O

monoklin : 2/m : C2/c

VI/C.05-010

Ferrohexahydrite

Fe2+SO4·6H2O

monoklin : 2/m : C2/c

VI/C.05-020

Chvaleticeite

(Mn2+,Mg)SO4·6H2O

monoklin : 2/m : C2/c

VI/C.05-030

Moorhouseite

(Co,Ni,Mn)SO4·6H2O

monoklin : 2/m : C2/c

VI/C.05-040

Nickelhexahydrite

(Ni,Mg,Fe2+)(SO4)·6H2O

monoklin : 2/m : A2/a

VI/C.05-050

Bianchite

(Zn,Fe2+)(SO4)·6H2O

monoklin : 2/m : C2/c

VI/C.05-060

Retgersite

NiSO4·6H2O

tetragonal : 422, 422 : P41212, P43212

VI/C.05-070

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

Hexahydrite

MgSO4·6H2O

monoklin : 2/m : C2/c

7.CB.300

Bianchite

(Zn,Fe2+)(SO4)·6H2O

monoklin : 2/m : C2/c

7.CB.320

Ferrohexahydrite

Fe2+SO4·6H2O

monoklin : 2/m : C2/c

7.CB.330

Retgersite

NiSO4·6H2O

tetragonal : 422, 422 : P41212, P43212

7.CB.340

Nickelhexahydrite

(Ni,Mg,Fe2+)(SO4)·6H2O

monoklin : 2/m : A2/a

7.CB.345

Moorhouseite

(Co,Ni,Mn)SO4·6H2O

monoklin : 2/m : C2/c

7.CB.350

Chvaleticeite

(Mn2+,Mg)SO4·6H2O

monoklin : 2/m : C2/c

7.CB.360

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

Bassanite

CaSO4·0.5H2O

monoklin : 2 : I2

29.06.01.01

Kieserite

MgSO4·H2O

monoklin : 2/m : C2/c

29.06.02.01

Szomolnokite

Fe2+SO4·H2O

monoklin : 2/m : C2/c

29.06.02.02

Szmikite

MnSO4·H2O

monoklin : 2/m : C2/c

29.06.02.03

Poitevinite

Cu(SO4)·H2O

triklin : 1 : P1

29.06.02.04

Gunningite

(Zn,Mn)SO4·H2O

monoklin : 2/m : C2/c

29.06.02.05

Dwornikite

(Ni,Fe2+)SO4·H2O

monoklin : 2/m : C2/c

29.06.02.06

Cobaltkieserite

Co[SO4]·H2O

monoklin : 2/m : C2/c

29.06.02.07

Gypsum

CaSO4·2H2O

monoklin : 2/m : I2/a

29.06.03.01

Bonattite

CuSO4·3H2O

monoklin : m : Cc

29.06.05.01

Rozenite

Fe2+SO4·4H2O

monoklin : 2/m : P21/n

29.06.06.01

'Starkeyite'

MgSO4·4H2O

monoklin : 2/m : P21/n

29.06.06.02

Ilesite

(Mn,Zn,Fe2+)SO4·4H2O

monoklin : 2/m : P21/n

29.06.06.03

Aplowite

(Co,Mn,Ni)SO4·4H2O

monoklin : 2/m : P21/n

29.06.06.04

Boyleite

(Zn,Mg)SO4·4H2O

monoklin : 2/m : P21/n

29.06.06.05

Chalcanthite

CuSO4·5H2O

triklin : 1 : P1

29.06.07.01

Siderotil

Fe(SO4)·5H2O

triklin : 1 : P1

29.06.07.02

Pentahydrite

MgSO4·5H2O

triklin : 1 : P1

29.06.07.03

Jôkokuite

MnSO4·5H2O

triklin : 1 : P1

29.06.07.04

Hexahydrite

MgSO4·6H2O

monoklin : 2/m : C2/c

29.06.08.01

Bianchite

(Zn,Fe2+)(SO4)·6H2O

monoklin : 2/m : C2/c

29.06.08.02

Ferrohexahydrite

Fe2+SO4·6H2O

monoklin : 2/m : C2/c

29.06.08.03

Nickelhexahydrite

(Ni,Mg,Fe2+)(SO4)·6H2O

monoklin : 2/m : A2/a

29.06.08.04

Moorhouseite

(Co,Ni,Mn)SO4·6H2O

monoklin : 2/m : C2/c

29.06.08.05

Chvaleticeite

(Mn2+,Mg)SO4·6H2O

monoklin : 2/m : C2/c

29.06.08.06

Retgersite

NiSO4·6H2O

tetragonal : 422, 422 : P41212, P43212

29.06.09.01

Other languages

Spanish

Ferrohexahidrita

German

Ferrohexahydrit

English

Ferrohexahydrite

French

Ferrohexahydrite

Russian

Феррогексагидрит

Alternative Name

Spanish

Ferrohexahydrita

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