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Zincochromite

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Zinkochromit
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Zinkochromit
Aggregat von Zinkochromit eingegossen in Epoxidharz und poliert, Srednyaya Padma U-V-Lagerstätte, Zaonezhie-Halbinsel, Karelien, Russland; BB ~ 2 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: Russland/Nordwestrussland, Föderationskreis/Karelien, Republik/Onegasee/Zaonezhie-Halbinsel/Velikaya Guba U-Lagerstätte/Srednyaya Padma U-V-Lagerstätte
Mineral: Zincochromite
Image: 1626885123
License: Usage for Mineralienatlas project only
Zinkochromit

Aggregat von Zinkochromit eingegossen in Epoxidharz und poliert, Srednyaya Padma U-V-Lagerstätte, Zaonezhie-Halbinsel, Karelien, Russland; BB 2 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2021-07-21
Locality: Srednyaya Padma U-V-Lagerstätte / Velikaya Guba U-Lagerstätte / Zaonezhie-Halbinsel / Onegasee / Karelien, Republik / Nordwestrussland, Föderationskreis / Russland

Collectors Summary

Color bräunlichschwarz-met.
Hardness (Mohs) 6
Crystal System kubisch, Fd3m

Chemism

Chemical formula

ZnCr2O4

Chemical composition

Chrom, Zink, Sauerstoff

Unit weight: 233.39944 u; Number of atoms in the formula: 7

Info

Empirical formula:

ZnCr2O4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

27.42

4

57.14

15.9994300

63.9977200
Chromium

Cr

44.56

2

28.57

51.9961600

103.9923200
Zinc

Zn

28.02

1

14.29

65.4094000

65.4094000

Analysis wt%

Ø ZnO : 35.91, Cr2O3 : 53.67, Al2O3 : 0.97, SiO2 : 2.90, TiO2 : 0.41, V2O3 : 4.55, Fe2O3 : 2.78 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 87)

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.03-060

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.120

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

Dana 8th edition

07.02.03.06

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

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Spinel supergroup  ⇒ Oxyspinel group  ⇒ Spinel subgroup

Optical Properties

Color

bräunlichschwarz-met.

Crystallography

Crystal System

kubisch

Class (H-M)

m3m

Space Group number

227

Space Group

Fd3m

Cell parameters a (Å)

8.352

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)

582.601

X-Ray Powder Diffraction

4.822(10),
2.954(50),
2.519(100),
2.410(10),
2.088(20),
1.705(10),
1.607(30),
1.476(30)
XRD chart Zincochromite

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)

6

VHN (Hardness Vickers)

620 (10g)

Density (g/cm³)

5.434 (berechnet)

5.322 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Russland/Nordwestrussland, Föderationskreis/Karelien, Republik/Onegasee/Zaonezhie-Halbinsel/Velikaya Guba U-Lagerstätte

Russland/Nordwestrussland, Föderationskreis/Karelien, Republik/Onegasee/Zaonezhie-Halbinsel/Velikaya Guba U-Lagerstätte/Srednyaya Padma U-V-Lagerstätte

Preface

Author (Name, Year)

Nesterov & Rumyantseva, 1987

References

Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 116 (1987), 367

IMA group assignments

 
Spinel supergroup
 
 
 

 
 
Oxyspinel group
 
 
 

 
 
 
Spinel subgroup
 
 
 

 
 
 
 
Chromite
Fe2+Cr2O4
kubisch
Fd3m

 
 
 
 
Cochromite
(Co,Ni,Fe2+)(Cr,Al)2O4
kubisch
Fd3m

 
 
 
 
Coulsonite
Fe2+V23+O4
kubisch
Fd3m

 
 
 
 
Cuprospinel
(Cu,Mg)Fe23+O4
kubisch
Fd3m

 
 
 
 
Dellagiustaite
V2+Al2O4
kubisch
Fd3m

 
 
 
 
Deltalumite
Al2O3
tetragonal
P4m2

 
 
 
 
Franklinite
(Zn,Mn2+,Fe2+)(Fe3+,Mn3+)2O4
kubisch
Fd3m

 
 
 
 
Gahnite
ZnAl2O4
kubisch
Fd3m

 
 
 
 
Galaxite
(Mn,Fe2+,Mg)(Al,Fe3+)2O4
kubisch
Fd3m

 
 
 
 
Guite
Co2+Co3+2O4
kubisch
Fd3m

 
 
 
 
Hausmannite
Mn2+Mn23+O4
tetragonal
I41/amd

 
 
 
 
Hercynite
Fe2+Al2O4
kubisch
Fd3m

 
 
 
 
Hetaerolite
ZnMn23+O4
tetragonal
I41/amd

 
 
 
 
Jacobsite
(Mn2+,Fe2+,Mg)(Fe3+,Mn3+)2O4
kubisch
Fd3m

 
 
 
 
Maghemite
Fe2.67O4
kubisch
P4132, P4332

 
 
 
 
Magnesiochromite
MgCr2O4
kubisch
Fd3m

 
 
 
 
Magnesiocoulsonite
MgV23+O4
kubisch
Fd3m

 
 
 
 
Magnesioferrite
MgFe23+O4
kubisch
Fd3m

 
 
 
 
Magnetite
Fe2+Fe23+O4
kubisch
Fd3m

 
 
 
 
Manganochromite
(Mn,Fe2+)(Cr,V)2O4
kubisch
Fd3m

 
 
 
 
Spinel
MgAl2O4
kubisch
Fd3m

 
 
 
 
Thermaerogenite
CuAl2O4
kubisch
Fd3m

 
 
 
 
Titanomaghemite ?
Fe3+(Fe3+,Ti4+,Fe2+,☐)2O4
kubisch
P4332, P4132

 
 
 
 
Trevorite
NiFe23+O4
kubisch
Fd3m

 
 
 
 
Vuorelainenite
(Mn2+,Fe2+)(V3+,Cr3+)2O4
kubisch
Fd3m

 
 
 
 
Zincochromite
ZnCr2O4
kubisch
Fd3m

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Actuality: 24. May 2023 - 07:33:38

Other languages

German

Zincochromit

Spanish

Zincochromita

English

Zincochromite

French

Zincochromite

Italian

Zincochromite

Russian

Цинкохромит

Japanese

亜鉛ｸﾛﾑ鉄鉱

Alternative Name

German

Zinkochromit

CNMNC (IMA)-Number

IMA 1986-015

CNMNC symbol

Symbol

Zchr

Locations with GPS information

IDs

GUSID (Global unique identifier short form) SCZZJzmFOk6fWtQ90xJ4JQ
GUID (Global unique identifier) 27592648-8539-4E3A-9F5A-D43DD3127825
Database ID 4281