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Magnesiochromite

Pictures (2 Images total)

Magnesiochromit
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Magnesiochromit

Türkei/Zentralanatolien/Kayseri, Provinz. Bildbreite 1,3 mm

Collection: Ulrich Baumgärtl
Copyright: Ulrich Baumgärtl
Contribution: Ulrich Baumgärtl 2020-05-23
Locality: Kayseri, Provinz / Zentralanatolien / Türkei
Magnesiochromit
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Magnesiochromit

Türkei/Zentralanatolien/Kayseri, Provinz. Bildbreite 1,4 mm

Collection: Ulrich Baumgärtl
Copyright: Ulrich Baumgärtl
Contribution: Ulrich Baumgärtl 2020-05-23
Locality: Kayseri, Provinz / Zentralanatolien / Türkei

Collectors Summary

Color schwarz
Streak color dunkelgrau
Hardness (Mohs) 5.5
Crystal System kubisch, Fd3m

Chemism

Chem­ical formula

MgCr2O4

Chem­ical com­po­si­tion

Chrom, Magnesium, Sauerstoff

Unit weight: 192.2951 u; Number of atoms in the formula: 7

Info

Empirical formula:

MgCr2O4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

33.28

4

57.14

15.9994300

63.9977200

Magnesium

Mg

12.64

1

14.29

24.3050600

24.3050600

Chromium

Cr

54.08

2

28.57

51.9961600

103.9923200

Strunz 9th edi­tion incl. updates

4.BB.05

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
B: Metall: Sauerstoff = 3:4 und vergleichbare
B: Mit ausschließlich mittelgroßen [Kationen]
05:Spinel-Gruppe

Lapis Clas­sifica­tion

IV/B.03-010

IV: OXIDE
B: Oxide mit Verhältnis Metall zu Sauerstoff = 3:4 (Spinelltyp M3O4 und verwandte Verbindungen)
3: Spinell-Gruppe; Chromit-Spinelle

Clas­sifica­tion by Hölzel

4.BC.100

4: OXIDES
B: Spinels R3O4
C: Cr-Spinels

Dana 8th edi­tion

07.02.03.01

07: Multiple Oxides
02: Multiple Oxides (A+ B++)2 X4 Spinel group
03: (Chromium subgroup)

IMA sta­tus

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

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Spinel supergroup  ⇒ Oxyspinel group  ⇒ Spinel subgroup

Optical Properties

Color

schwarz

Streak color

dunkelgrau

Crystallography

Crystal Sys­tem

kubisch

Class (H-M)

m3m

Space Group number

227

Space Group

Fd3m

Cell param­e­ters a (Å)

8.277

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

-

Cell param­e­ters a/b or c/a

1

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

8

Volumne (ų)

567.047

X-Ray Pow­der Diffrac­tion

4.813(60),
2.945(10),
2.512(100),
2.406(10),
2.083(50),
1.603(40),
1.473(50),
1.409(10)

XRD chart Magnesiochromite

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)

5.5

VHN (Hard­ness Vick­ers)

1468 (100g)

Density (g/cm³)

4.2 (gemessen)

4.505 ( ρ calc. Mineralienatlas )

Preface

Author (Name, Year)

Bock, 1868

References

Handbook of Mineralogy (Anthony et al.), 3 (1997), 330

IMA group assignments

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

Xieite

FeCr2O4

orthorhombisch : mmm : Bbmm

4.BB.05

Gahnite

ZnAl2O4

kubisch : m3m : Fd3m

4.BB.05

Chromite

Fe2+Cr2O4

kubisch : m3m : Fd3m

4.BB.05

Galaxite

(Mn,Fe2+,Mg)(Al,Fe3+)2O4

kubisch : m3m : Fd3m

4.BB.05

Spinel

MgAl2O4

kubisch : m3m : Fd3m

4.BB.05

Hercynite

Fe2+Al2O4

kubisch : m3m : Fd3m

4.BB.05

Jacobsite

(Mn2+,Fe2+,Mg)(Fe3+,Mn3+)2O4

kubisch : m3m : Fd3m

4.BB.05

Magnetite

Fe2+Fe23+O4

kubisch : m3m : Fd3m

4.BB.05

Qandilite

(Mg,Fe2+)2(Ti,Fe3+,Al)O4

kubisch : m3m : Fd3m

4.BB.05

Trevorite

NiFe23+O4

kubisch : m3m : Fd3m

4.BB.05

Cochromite

(Co,Ni,Fe2+)(Cr,Al)2O4

kubisch : m3m : Fd3m

4.BB.05

Coulsonite

Fe2+V23+O4

kubisch : m3m : Fd3m

4.BB.05

'Nichromite'

(Ni,Co,Fe2+)(Cr,Fe3+,Al)2O4

kubisch : m3m : Fd3m

4.BB.05

Franklinite

(Zn,Mn2+,Fe2+)(Fe3+,Mn3+)2O4

kubisch : m3m : Fd3m

4.BB.05

Filipstadite

(Mn2+,Mg)2(Fe3+0.5Sb5+0.5)O4

kubisch : m3m : Fd3m

4.BB.05

Tegengrenite

(Mg,Mn2+)2(Sb5+,Mn3+)O4

trigonal : 3, 3 : R3, R3

4.BB.05

Cuprospinel

(Cu,Mg)Fe23+O4

kubisch : m3m : Fd3m

4.BB.05

Ulvöspinel

TiFe22+O4

kubisch : m3m : Fd3m

4.BB.05

Zincochromite

ZnCr2O4

kubisch : m3m : Fd3m

4.BB.05

Vuorelainenite

(Mn2+,Fe2+)(V3+,Cr3+)2O4

kubisch : m3m : Fd3m

4.BB.05

Magnesioferrite

MgFe23+O4

kubisch : m3m : Fd3m

4.BB.05

Manganochromite

(Mn,Fe2+)(Cr,V)2O4

kubisch : m3m : Fd3m

4.BB.05

Magnesiochromite

MgCr2O4

kubisch : m3m : Fd3m

4.BB.05

Magnesiocoulsonite

MgV23+O4

kubisch : m3m : Fd3m

4.BB.05

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

Magnesiochromite

MgCr2O4

kubisch : m3m : Fd3m

IV/B.03-010

Chromite

Fe2+Cr2O4

kubisch : m3m : Fd3m

IV/B.03-020

Manganochromite

(Mn,Fe2+)(Cr,V)2O4

kubisch : m3m : Fd3m

IV/B.03-030

Cochromite

(Co,Ni,Fe2+)(Cr,Al)2O4

kubisch : m3m : Fd3m

IV/B.03-040

'Nichromite'

(Ni,Co,Fe2+)(Cr,Fe3+,Al)2O4

kubisch : m3m : Fd3m

IV/B.03-050

Zincochromite

ZnCr2O4

kubisch : m3m : Fd3m

IV/B.03-060

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

Magnesiochromite

MgCr2O4

kubisch : m3m : Fd3m

4.BC.100

Chromite

Fe2+Cr2O4

kubisch : m3m : Fd3m

4.BC.110

Zincochromite

ZnCr2O4

kubisch : m3m : Fd3m

4.BC.120

Cochromite

(Co,Ni,Fe2+)(Cr,Al)2O4

kubisch : m3m : Fd3m

4.BC.150

'Nichromite'

(Ni,Co,Fe2+)(Cr,Fe3+,Al)2O4

kubisch : m3m : Fd3m

4.BC.160

Manganochromite

(Mn,Fe2+)(Cr,V)2O4

kubisch : m3m : Fd3m

4.BC.170

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

Spinel

MgAl2O4

kubisch : m3m : Fd3m

07.02.01.01

Galaxite

(Mn,Fe2+,Mg)(Al,Fe3+)2O4

kubisch : m3m : Fd3m

07.02.01.02

Hercynite

Fe2+Al2O4

kubisch : m3m : Fd3m

07.02.01.03

Gahnite

ZnAl2O4

kubisch : m3m : Fd3m

07.02.01.04

Magnesioferrite

MgFe23+O4

kubisch : m3m : Fd3m

07.02.02.01

Jacobsite

(Mn2+,Fe2+,Mg)(Fe3+,Mn3+)2O4

kubisch : m3m : Fd3m

07.02.02.02

Magnetite

Fe2+Fe23+O4

kubisch : m3m : Fd3m

07.02.02.03

Franklinite

(Zn,Mn2+,Fe2+)(Fe3+,Mn3+)2O4

kubisch : m3m : Fd3m

07.02.02.04

Trevorite

NiFe23+O4

kubisch : m3m : Fd3m

07.02.02.05

Cuprospinel

(Cu,Mg)Fe23+O4

kubisch : m3m : Fd3m

07.02.02.06

Brunogeierite

(Fe2+)2Ge4+O4

kubisch : m3m : Fd3m

07.02.02.07

Magnesiochromite

MgCr2O4

kubisch : m3m : Fd3m

07.02.03.01

Manganochromite

(Mn,Fe2+)(Cr,V)2O4

kubisch : m3m : Fd3m

07.02.03.02

Chromite

Fe2+Cr2O4

kubisch : m3m : Fd3m

07.02.03.03

Cochromite

(Co,Ni,Fe2+)(Cr,Al)2O4

kubisch : m3m : Fd3m

07.02.03.05

Zincochromite

ZnCr2O4

kubisch : m3m : Fd3m

07.02.03.06

Vuorelainenite

(Mn2+,Fe2+)(V3+,Cr3+)2O4

kubisch : m3m : Fd3m

07.02.04.01

Coulsonite

Fe2+V23+O4

kubisch : m3m : Fd3m

07.02.04.02

Magnesiocoulsonite

MgV23+O4

kubisch : m3m : Fd3m

07.02.04.03

Qandilite

(Mg,Fe2+)2(Ti,Fe3+,Al)O4

kubisch : m3m : Fd3m

07.02.05.01

Ulvöspinel

TiFe22+O4

kubisch : m3m : Fd3m

07.02.05.02

Kusachiite

CuBi2O4

tetragonal : 4/mmm : P4/ncc

07.02.06.01

Iwakiite

Mn2+(Fe3+,Mn3+)2O4

tetragonal : 4/mmm : I41/amd

07.02.06.02

Hausmannite

Mn2+Mn23+O4

tetragonal : 4/mmm : I41/amd

07.02.07.01

Hetaerolite

ZnMn23+O4

tetragonal : 4/mmm : I41/amd

07.02.07.02

'Hydrohetaerolite'

HZnMn3+1.7O4

tetragonal : 4/mmm : I41/amd

07.02.07.03

Minium

Pb2+2Pb4+O4

tetragonal : 4/mmm : P42/mbc

07.02.08.01

Chrysoberyl

BeAl2O4

orthorhombisch : mmm : Pbnm

07.02.09.01

Alternative Name

Chrome-Spinel (of Boldyrev)

Chrome-Spinel (of Boldyrev)

Ferrichromspinel

Spanish

Magnesiochromita

Magnesiochromite (of Bock)

Magnesiochromite (of Simpson)

Magnochromite (of Fisher)

German

Mitchellit

Spanish

Mitchellita

Mitchellite

Japanese

苦土クロム石

Simplified Chinese

镁铬尖晶石

CNMNC symbol

Symbol

Mchr

Rock part of

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

German pages

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English pages

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Russian pages

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German pages

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