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Vyalsovite

Collectors Summary

Color karminrot-met.
Crystal System orthorhombisch,

Chemism

Chemical formula

FeS·Ca(OH)2·Al(OH)3

Chemical composition

Aluminium, Calcium, Eisen, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 240.0075232 u; Number of atoms in the formula: 14

Info

Empirical formula:

FeS·Ca(OH)2·Al(OH)3

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

2.10

5

35.71

1.0079470

5.0397350
Oxygen

O

33.33

5

35.71

15.9994300

79.9971500
Aluminium

Al

11.24

1

7.14

26.9815382

26.9815382
Sulfur

S

13.36

1

7.14

32.0655000

32.0655000
Calcium

Ca

16.70

1

7.14

40.0784000

40.0784000
Iron

Fe

23.27

1

7.14

55.8452000

55.8452000

Strunz 9th edition incl. updates

2.FD.45

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfoarsenide, Sulfoantimonide, Sulfobismuthide)
F: Sulfide, Arsenide, Alkaide; Sulfide mit Halogeniden, Oxiden, Hydroxiden (H2O)
D: mit O, OH, H2O
45:Vyalsovit-Gruppe

Lapis Classification

II/C.23-050

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
C: Sulfide mit Metall : S,Se,Te ~ 1:1

Classification by Hölzel

2.KC.280

2: SULFIDES
K: Nonmetallic Sulfides, HalideSulfides, etc.
C: With O,OH,H2O
2: With Hydroxide

Dana 8th edition

02.14.04.01

02: Sulfide Minerals
14: Sulfides - Including Selenides and Tellurides (Hydroxyl or Hydrated)

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

karminrot-met.

Crystallography

Crystal System

orthorhombisch

Cell parameters a (Å)

14.20

Cell parameters b (Å)

20.98

Cell parameters c (Å)

5.496

Cell parameters a/b or c/a

0.677

Cell parameters c/b

0.262

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

8

Volume (ų)

1637.346

Crystal structure

aufgeklärt, Soboleva, S.V., Boeva, N.M., Evstigneeva, T.E. et al.: The Crystal Structure of Vyalsovite FeCаAlS(OH)5: First Example of the Commensurate Combination of Iron Sulfide and Hydroxide Layers. Dokl. Earth Sc. Vol. 503 (2022) S. 164–167. https://doi.org/10.1134/S1028334X22040171

X-Ray Powder Diffraction

5.40(100),
4.76(40),
2.88(20),
2.16(50),
1.973(30),
1.894(30),
1.846(30),
1.676(40)
XRD chart Vyalsovite

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

Physical Properties

Density (g/cm³)

1.96 (errechnet)

1.947 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Russland/Sibirien, Föderationskreis/Krasnojarsk (Krasnojarski), Krai/Taimyrhalbinsel (Tajmyr)/Putoran-Plateau/Noril'sk/Talnakh/Komsomol'skii Mine (Komsomolsky Mine)

Preface

Occurrences

Forsteritskarne zusammen mit nichtsulfidischen Mineralien und Sulfiden.

Associations

Spinell, Magnetit, Diaspor, Forsterit, Chalkopyrit, Pentlandit, Valleriit, Pyrit, Djerfisherit, Serpentin

Name from

Leonid N. Vyalsov

Author (Name, Year)

Evstigneeva & Genkin & Sandomirskaya & Trubkin, 1992

References

American Mineralogist 77 (1992), 201

Other languages

German

Vyalsovit

Spanish

Vyalsovita

English

Vyalsovite

French

Vyalsovite

Russian

Вяльсовит

CNMNC (IMA)-Number

IMA 1989-004

CNMNC symbol

Symbol

Vyl

Locations with GPS information

IDs

GUSID (Global unique identifier short form) qC_kGUjeOEal4ROQmad-Ew
GUID (Global unique identifier) 19E42FA8-DE48-4638-A5E1-139099A77E13
Database ID 4097