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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 )

Preface

Author (Name, Year)

Nesterov & Rumyantseva, 1987

References

Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 116 (1987), 367

IMA group assignments

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

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

German pages

DeWikiPedia - search for: Zincochromit
Google-Bilder-Suche - search for: Zincochromit
Mineralienatlas.de (Forum) - search for: Zincochromit

English pages

Mindat - search for: Zincochromite
Webmineral - search for:Zincochromite
Handbook-of-Mineralogy - search for: Zincochromite
RRUFF - Raman, XRD and other mineral data - search for: Zincochromite
RRUFF - References and PDF downloads - search for: Zincochromite
American-Mineralogist-Crystal-Structure-Database - search for: Zincochromite
Strahlen.org - search for: Zincochromite

Russian pages

Webmineral.ru - search for: Цинкохромит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Zincochromit
Crystal-Treasure.com - search for: Zincochromit
Bosse - search for: Zincochromit
Edelsteine Neuburg - Gundolf Fischer - search for: Zincochromit
Geolitho marketplace, by and for collectors - search for: Zincochromit

Locations with GPS information