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Achávalite

Additional Functions

Collectors Summary

Color grau
Streak color grau-schwarz
Hardness (Mohs) 2.5
Crystal System hexagonal, P63/mmc

Chemism

Chem­ical formula

FeSe

Chem­ical com­po­si­tion

Eisen, Selen

Unit weight: 134.8082 u; Number of atoms in the formula: 2

Info

Empirical formula:

FeSe

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Iron

Fe

41.43

1

50.00

55.8452000

55.8452000

Selenium

Se

58.57

1

50.00

78.9630000

78.9630000

Anal­y­sis wt%

Fe : 41.43, Se : 58.57 (Ref: berechnet)

Strunz 9th edi­tion incl. updates

2.CC.05

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
C: Metallsulfide, M : S = 1 : 1 (und ähnliche)
C: mit Nickel (Ni), Eisen (Fe), Cobalt (Co), usw.
05:Nickelin-Gruppe

Lapis Clas­sifica­tion

II/C.19-060

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

Clas­sifica­tion by Hölzel

2.CC.300

2: SULFIDES
C: Sulfides (etc) with Me/S=1/1
C: With Pd,Pt, etc. - Coordination Number ~[4], Planar
3: Coordination Number ~[3+3] Nickeline-Group

Dana 8th edi­tion

02.00.00.00

02: Sulfide Minerals
00: Sulfide Minerals Without Dana Classification Numbers

IMA sta­tus

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

grau

Streak color

grau-schwarz

Diaphane­ity (Trans­parency)

opak

Crystallography

Crystal Sys­tem

hexagonal

Class (H-M)

6/mmm

Space Group number

194

Space Group

P63/mmc

Cell param­e­ters a (Å)

3.636

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

5.946

Cell param­e­ters a/b or c/a

1.635

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

120°

Z

2

Volumne (ų)

68.077

X-Ray Pow­der Diffrac­tion

2.778(100),
2.159(90),
1.815(70),
1.675(30),
1.519(30),
1.165(40),
1.149(30),
1.103(30)

XRD chart Achávalite

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)

2.5

VHN (Hard­ness Vick­ers)

53 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

6.53

6.576 ( ρ calc. Mineralienatlas )

Preface

Name from

Achaválit wurde beannt nach Luis Achával (geb. 8 Juni 1870 in Córdoba - gestorben am 20. März 1938). Luis Achavál war Professor an der Universidad Nacional de Córdoba. Er war Autor von "Geografia de Córdoba" mit Manuel Rio und war Präsident der Academia de Ciencia.

Author (Name, Year)

Olsacher, 1939

References

Boletin de la Facultad de Ciencias Exactas, Fisicas y Naturales, Universidad Nacional de Cordoba 2(1939), 73

Neues Jahrbuch für Mineralogie, Monatshefte (1972), 276

IMA 15-E: Spelling of names of eight mineral species Proposal 15-E is accepted, and the spelling of eight mineral names is modified as follows: achavalite becomes achávalite; behierite becomes béhierite; camerolaite becomes camérolaite; fabriesite becomes fabrièsite; remondite-(Ce) becomes rémondite-(Ce); remondite-(La) becomes rémondite-(La); sénarmontite becomes senarmontite; sérandite becomes serandite.

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

'Imgreite'

NiTe

hexagonal : 6/mmm : P63/mmc

2.CC.05

'Jaipurite'

CoS

hexagonal : 6/mmm : P63/mmc

2.CC.05

Langisite

(Co,Ni)As

hexagonal : 6/mmm : P63/mmc

2.CC.05

Nickeline

NiAs

hexagonal : 6/mmm : P63/mmc

2.CC.05

Vavřínite

Ni2SbTe2

2.CC.05

Achávalite

FeSe

hexagonal : 6/mmm : P63/mmc

2.CC.05

Freboldite

CoSe

hexagonal : 6/mmm : P63/mmc

2.CC.05

Kotulskite

Pd(Te,Bi)2-x {x ≈ 0.4}

hexagonal : 6/mmm : P63/mmc

2.CC.05

Stumpflite

Pt(Sb,Bi)

hexagonal : 6/mmm : P63/mmc

2.CC.05

Sudburyite

(Pd,Ni)Sb

hexagonal : 6/mmm : P63/mmc

2.CC.05

Zlatogorite

CuNiSb2

trigonal : 3m : P3m1

2.CC.05

Sederholmite

NiSe

hexagonal : 6/mmm : P63/mmc

2.CC.05

Sobolevskite

PdBi

2.CC.05

Breithauptite

NiSb

hexagonal : 6/mmm : P63/mmc

2.CC.05

'Hexatestibiopanickelite'

(Ni,Pd)(Te,Sb)

hexagonal : 6/mmm : P63/mmc

2.CC.05

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

Troilite

FeS

hexagonal : 6m2 : P62c

II/C.19-010

Pyrrhotite

Fe1-xS

II/C.19-020

'Jaipurite'

CoS

hexagonal : 6/mmm : P63/mmc

II/C.19-025

Westerveldite

(Fe,Ni,Co)As

orthorhombisch : mmm : Pmcn

II/C.19-030

Modderite

(Co,Fe)As

orthorhombisch : mmm, mm2 : Pmcn, Pna21

II/C.19-040

Smythite

(Fe,Ni)3+xS4 {x≈0-0.3}

trigonal : 3m : R3m

II/C.19-050

Achávalite

FeSe

hexagonal : 6/mmm : P63/mmc

II/C.19-060

Heideite

(Fe,Cr)1.15(Ti,Fe)2S4

monoklin : 2/m : I2/m

II/C.19-070

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

Achávalite

FeSe

hexagonal : 6/mmm : P63/mmc

2.CC.300

Freboldite

CoSe

hexagonal : 6/mmm : P63/mmc

2.CC.310

Sederholmite

NiSe

hexagonal : 6/mmm : P63/mmc

2.CC.320

'Imgreite'

NiTe

hexagonal : 6/mmm : P63/mmc

2.CC.325

Langisite

(Co,Ni)As

hexagonal : 6/mmm : P63/mmc

2.CC.340

Nickeline

NiAs

hexagonal : 6/mmm : P63/mmc

2.CC.350

Breithauptite

NiSb

hexagonal : 6/mmm : P63/mmc

2.CC.355

Zlatogorite

CuNiSb2

trigonal : 3m : P3m1

2.CC.360

Sorosite

Cu1+x(Sn,Sb)

hexagonal : 6/mmm : P63/mmc

2.CC.365

'Hexatestibiopanickelite'

(Ni,Pd)(Te,Sb)

hexagonal : 6/mmm : P63/mmc

2.CC.370

Sudburyite

(Pd,Ni)Sb

hexagonal : 6/mmm : P63/mmc

2.CC.380

Sobolevskite

PdBi

2.CC.385

Stumpflite

Pt(Sb,Bi)

hexagonal : 6/mmm : P63/mmc

2.CC.390

Vavřínite

Ni2SbTe2

2.CC.395

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

Achávalite

FeSe

hexagonal : 6/mmm : P63/mmc

02.00.00.00

Vihorlatite

Bi8+x(Se,Te,S)11-x

02.00.00.00

Other languages

German

Achávalit

Spanish

Achávalita

English

Achávalite

French

Achávalite

Russian

Ачавалит

Simplified Chinese

硒铁矿

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

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