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Godovikovite

Pictures (2 Images total)

Godovikovit
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Godovikovit

Bildbreite: 2,4 mm; Fundort: La Fossa, Vulkan Insel Eolie, Lipari, Messina, Sizilien, Italien

Copyright: Enrico Bonacina
Contribution: Hg 2011-10-31
Locality: La Fossa Krater / Vulcano, Insel / Äolische (Liparische) Inseln (Isole Eolie; Isole Lipari) / Messina, Provinz / Sizilien (Sicilia), Region / Italien
Godovikovit
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Godovikovit

Größe: 65x50 mm; Fundort: Königin Carolaschacht, Freital, Döhlener Becken, Dresden, Sachsen, Deutschland

Copyright: Paul Bongaerts
Contribution: slugslayer 2010-01-21
Locality: Königin Carolaschacht / Freital / Sächsische Schweiz-Osterzgebirge, Landkreis / Sachsen / Deutschland

Collectors Summary

Color gelblichweiß
Streak color weiß
Hardness (Mohs) 2
Solubility ++ H2O
Crystal System trigonal, P321

Chemism

Chem­ical formula

(NH4)(Al,Fe3+)(SO4)2

Chem­ical com­po­si­tion

Aluminium, Eisen, Sauerstoff, Schwefel, Stickstoff, Wasserstoff

Unit weight: 244.36240165 u; Number of atoms in the formula: 16

Info

Empirical formula:

(NH4)(Al0.75Fe0.25)(SO4)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

1.65

4

25.00

1.0079470

4.0317880

Nitrogen

N

5.73

1

6.25

14.0067200

14.0067200

Oxygen

O

52.38

8

50.00

15.9994300

127.9954400

Aluminium

Al

8.28

0.75

4.69

26.9815382

20.2361537

Sulfur

S

26.24

2

12.50

32.0655000

64.1310000

Iron

Fe

5.71

0.25

1.56

55.8452000

13.9613000

Strunz 9th edi­tion incl. updates

7.AC.20

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

Lapis Clas­sifica­tion

VI/A.05-010

VI: SULFATE, CHROMATE, MOLYBDATE UND WOLFRAMATE
A: Wasserfreie Sulfate [SO4] 2-, ohne fremde Anionen
5: Mittelgroße und sehr große Kationen

Clas­sifica­tion by Hölzel

7.AB.320

7: SULFATES CHROMATES MOLYBDATES WOLFRAMATES
A: Sulfates (-Anions -Water)
B: Sulfates, C medium + large

Dana 8th edi­tion

28.03.05.02

28: Sulfate Minerals
03: Anhydrous Acid and Sulfates (A++) XO4

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

gelblichweiß

Streak color

weiß

max. Birefrin­gence

0.009

Birefringence chart\! Godovikovite title=Birefringence chart Godovikovite

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

1.572

RI value γ / ε

1.581

Ri mean

1.575

2V angle

Uniaxial (+)

Crystallography

Crystal Sys­tem

trigonal

Class (H-M)

32

Space Group number

150

Space Group

P321

Cell param­e­ters a (Å)

4.75

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

8.30

Cell param­e­ters a/b or c/a

1.747

Cell param­e­ters c/b

-

Z

1

Volumne (ų)

162.179

X-Ray Pow­der Diffrac­tion

8.30(90),
3.69(100),
2.921(90),
2.764(70),
2.374(80),
2.280(60),
2.060(50),
1.848(70)

XRD chart Godovikovite

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

Crystals 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

2

VHN (Hard­ness Vick­ers)

32 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.52 (berechnet)

2.502 ( ρ calc. Mineralienatlas )

Insta­bil­ity

++ H2O

Preface

Author (Name, Year)

Shcherbakova & Bazhenova & Chesnokov, 1988

References

Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 117 (1988), 208

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

Sabieite

(NH4)Fe3+(SO4)2

trigonal : 32 : P321

7.AC.20

Steklite

KAl(SO4)2

trigonal : 32 : P321

7.AC.20

Godovikovite

(NH4)(Al,Fe3+)(SO4)2

trigonal : 32 : P321

7.AC.20

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

Steklite

KAl(SO4)2

trigonal : 32 : P321

VI/A.05-005

Godovikovite

(NH4)(Al,Fe3+)(SO4)2

trigonal : 32 : P321

VI/A.05-010

Sabieite

(NH4)Fe3+(SO4)2

trigonal : 32 : P321

VI/A.05-020

Aluminopyracmonite

(NH4)3Al(SO4)3

trigonal : 3 : R3

VI/A.05-025

Pyracmonite

(NH4)3Fe(SO4)3

trigonal : 3m : R3c

VI/A.05-030

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

Yavapaiite

KFe3+(SO4)2

monoklin : 2/m : C2/m

7.AB.300

Sabieite

(NH4)Fe3+(SO4)2

trigonal : 32 : P321

7.AB.310

Godovikovite

(NH4)(Al,Fe3+)(SO4)2

trigonal : 32 : P321

7.AB.320

Steklite

KAl(SO4)2

trigonal : 32 : P321

7.AB.330

Pyracmonite

(NH4)3Fe(SO4)3

trigonal : 3m : R3c

7.AB.340

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

Baryte

BaSO4

orthorhombisch : mmm : Pnma

28.03.01.01

Celestine

SrSO4

orthorhombisch : mmm : Pnma

28.03.01.02

Anglesite

PbSO4

orthorhombisch : mmm : Pnma

28.03.01.03

Anhydrite

CaSO4

orthorhombisch : mmm : Amma

28.03.02.01

Chalcocyanite

CuSO4

orthorhombisch : mmm : Pnma

28.03.03.01

Yavapaiite

KFe3+(SO4)2

monoklin : 2/m : C2/m

28.03.04.01

Sabieite

(NH4)Fe3+(SO4)2

trigonal : 32 : P321

28.03.05.01

Godovikovite

(NH4)(Al,Fe3+)(SO4)2

trigonal : 32 : P321

28.03.05.02

Other languages

German

Godovikovit

Spanish

Godovikovita

French

Godovikovite

English

Godovikovite

Russian

Годовиковит

IMA Number

IMA 1987-019

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

German pages

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English pages

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