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Sederholmite

Collectors Summary

Color gelb zu orange gelb
Lustre Metallglanz
Crystal System hexagonal, P63/mmc

Chemism

Chem­ical formula

NiSe

Chem­ical com­po­si­tion

Nickel, Selen

Unit weight: 137.65642 u; Number of atoms in the formula: 2

Info

Empirical formula:

NiSe

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Nickel

Ni

42.64

1

50.00

58.6934200

58.6934200

Selenium

Se

57.36

1

50.00

78.9630000

78.9630000

Anal­y­sis wt%

Ni : 36.80, Co : 1.90, Se : 61.30 (Ref: C.R.Soc.Geol.Finlande,64)

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.20-050

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

Clas­sifica­tion by Hölzel

2.CC.320

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

02.08.11.03

02: Sulfide Minerals
08: Sulfides - Including Selenides and Tellurides where Am Bn Xp, with (m+n):p=1:1
11: Nickeline Group (Hexagonal: P63/mmc)

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

gelb zu orange gelb

Diaphane­ity (Trans­parency)

opak

Lus­tre

Metallglanz

Crystallography

Crystal Sys­tem

hexagonal

Class (H-M)

6/mmm

Space Group number

194

Space Group

P63/mmc

Cell param­e­ters a (Å)

3.624

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

5.288

Cell param­e­ters a/b or c/a

1.459

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

120°

Z

2

Volumne (ų)

60.145

X-Ray Pow­der Diffrac­tion

2.70(100),
2.015(90),
1.806(80),
1.535(70),
1.50(70),
1.348(50),
1.155(50),
1.082(50)

XRD chart Sederholmite

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

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

7.6 (berechnet)

7.601 ( ρ calc. Mineralienatlas )

Preface

Name from

Jakob Johannes Sederholm (1863–1934), ehemelaiger Direktor des Geological Survey von Finland

Author (Name, Year)

Vuorelainen & Huhma & Häkli, 1964

Safety Instructions

Industrial chemicals are often present in powder form and therefore often contain much higher dangers than natural, crystalline substances. These hazard statements refer to the classification of industrially used chemical compounds that may also occur in this natural mineral. The hazard classification makes no claim to completeness.




Safety classes: H317: Kann allergische Hautreaktionen verursachen., H350i: Kann bei Einatmen Krebs erzeugen., H372: Schädigt die Organe bei längerer oder wiederholter Exposition., H410: Sehr giftig für Wasserorganismen mit langfristiger Wirkung., P260: Staub / Rauch / Gas / Nebel / Dampf / Aerosol nicht einatmen., P280: Schutzhandschuhe / Schutzkleidung / Augenschutz / Gesichtsschutz tragen., P363: Kontaminierte Kleidung vor erneutem Tragen waschen., P405: Unter Verschluss aufbewahren., P501: Inhalt / Behälter … zuführen.

References

Comptes Rendus, Société Géologique de Finlande 36 (1964), 113

American Mineralogist, 50 (1965), 519–520

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]

Sorosite

Cu1+x(Sn,Sb)

hexagonal : 6/mmm : P63/mmc

II/C.20-005

Langisite

(Co,Ni)As

hexagonal : 6/mmm : P63/mmc

II/C.20-010

Nickeline

NiAs

hexagonal : 6/mmm : P63/mmc

II/C.20-020

Breithauptite

NiSb

hexagonal : 6/mmm : P63/mmc

II/C.20-030

Freboldite

CoSe

hexagonal : 6/mmm : P63/mmc

II/C.20-040

Sederholmite

NiSe

hexagonal : 6/mmm : P63/mmc

II/C.20-050

Vavřínite

Ni2SbTe2

II/C.20-060

'Hexatestibiopanickelite'

(Ni,Pd)(Te,Sb)

hexagonal : 6/mmm : P63/mmc

II/C.20-070

Kotulskite

Pd(Te,Bi)2-x {x ≈ 0.4}

hexagonal : 6/mmm : P63/mmc

II/C.20-080

Sudburyite

(Pd,Ni)Sb

hexagonal : 6/mmm : P63/mmc

II/C.20-090

Stumpflite

Pt(Sb,Bi)

hexagonal : 6/mmm : P63/mmc

II/C.20-095

Polarite

Pd(Pb,Bi)

orthorhombisch : mm2 : Ccm21

II/C.20-100

Sobolevskite

PdBi

II/C.20-110

Ruthenarsenite

(Ru,Ni)As

II/C.20-120

Cherepanovite

RhAs

orthorhombisch : mmm : Pnma

II/C.20-130

Wassonite

TiS

trigonal : 3m : R3m

II/C.20-140

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]

Smythite

(Fe,Ni)3+xS4 {x≈0-0.3}

trigonal : 3m : R3m

02.08.10.02

Nickeline

NiAs

hexagonal : 6/mmm : P63/mmc

02.08.11.01

Breithauptite

NiSb

hexagonal : 6/mmm : P63/mmc

02.08.11.02

Sederholmite

NiSe

hexagonal : 6/mmm : P63/mmc

02.08.11.03

Sudburyite

(Pd,Ni)Sb

hexagonal : 6/mmm : P63/mmc

02.08.11.05

Kotulskite

Pd(Te,Bi)2-x {x ≈ 0.4}

hexagonal : 6/mmm : P63/mmc

02.08.11.06

Sobolevskite

PdBi

02.08.11.07

Stumpflite

Pt(Sb,Bi)

hexagonal : 6/mmm : P63/mmc

02.08.11.08

Langisite

(Co,Ni)As

hexagonal : 6/mmm : P63/mmc

02.08.11.09

Freboldite

CoSe

hexagonal : 6/mmm : P63/mmc

02.08.11.10

Sorosite

Cu1+x(Sn,Sb)

hexagonal : 6/mmm : P63/mmc

02.08.11.11

Covellite

CuS

hexagonal : 6/mmm : P63/mmc

02.08.12.01

Klockmannite

Cu5.2Se6

hexagonal : 6/mmm : P63/mmc

02.08.12.02

Vulcanite

CuTe

orthorhombisch : mmm : Pmnm

02.08.13.01

Cinnabar

HgS

trigonal : 32, 32 : P3121, P3221

02.08.14.01

Millerite

NiS

trigonal : 3m : R3m

02.08.16.01

Mäkinenite

gamma-NiSe

trigonal : 3m : R3m

02.08.16.02

Ruthenarsenite

(Ru,Ni)As

02.08.17.01

Cherepanovite

RhAs

orthorhombisch : mmm : Pnma

02.08.17.02

Modderite

(Co,Fe)As

orthorhombisch : mmm, mm2 : Pmcn, Pna21

02.08.18.01

Westerveldite

(Fe,Ni,Co)As

orthorhombisch : mmm : Pmcn

02.08.19.01

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

German pages

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