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Coulsonite

Pictures (2 Images total)

Coulsonit
Views (File:
1605450437
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Coulsonit
Indien, Bihar. Bidbreite 1,2 mm
Copyright: Ulrich Baumgärtl; Contribution: Ulrich Baumgärtl
Collection: Ulrich Baumgärtl
Location: Indien/Bihar
Mineral: Coulsonite
Image: 1605450437
License: Usage for Mineralienatlas project only
Coulsonit

Indien, Bihar. Bidbreite 1,2 mm
Collection: Ulrich Baumgärtl
Copyright: Ulrich Baumgärtl
Contribution: Ulrich Baumgärtl 2020-11-15
Locality: Bihar / Indien
Coulsonit
Views (File:
1605450935
): 246
Coulsonit
Indien Bihar. Bildbreite 0,3 mm
Copyright: Ulrich Baumgärtl; Contribution: Ulrich Baumgärtl
Collection: Ulrich Baumgärtl
Location: Indien/Bihar
Mineral: Coulsonite
Image: 1605450935
License: Usage for Mineralienatlas project only
Coulsonit

Indien Bihar. Bildbreite 0,3 mm
Collection: Ulrich Baumgärtl
Copyright: Ulrich Baumgärtl
Contribution: Ulrich Baumgärtl 2020-11-15
Locality: Bihar / Indien

You find additional specimen at the Geolitho Museum

Collectors Summary

Color blaugrau
Streak color schwarzbraun
Hardness (Mohs) 4.50 - 5.00
Solubility + H2SO4
Crystal System kubisch, Fd3m

Chemism

Chemical formula

Fe2+V23+O4

Chemical composition

Eisen, Sauerstoff, Vanadium

Unit weight: 221.72594 u; Number of atoms in the formula: 7

Info

Empirical formula:

FeV2O4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

28.86

4

57.14

15.9994300

63.9977200
Vanadium

V

45.95

2

28.57

50.9415100

101.8830200
Iron

Fe

25.19

1

14.29

55.8452000

55.8452000

Analysis wt%

FeO : 30.75, Fe2O3 : 0.52, V2O3 : 68.41 (Ref: American Mineralogist 62)

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.04-020

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

Classification by Hölzel

4.BD.100

4: OXIDES
B: Spinels R3O4
D: V,Ti,Ge-Spinels

Dana 8th edition

07.02.04.02

07: Multiple Oxides
02: Multiple Oxides (A+ B++)2 X4 Spinel group
04: (Vanadium subgroup)

IMA status

Neudefinition von der CNMNC anerkannt

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Spinel supergroup  ⇒ Oxyspinel group  ⇒ Spinel subgroup

Optical Properties

Color

blaugrau

Streak color

schwarzbraun

Crystallography

Crystal System

kubisch

Class (H-M)

m3m

Space Group number

227

Space Group

Fd3m

Cell parameters a (Å)

8.297

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

Volume (ų)

571.167

X-Ray Powder Diffraction

4.79(30),
2.93(60),
2.50(100),
2.07(80),
1.693(30),
1.597(90),
1.466(90),
1.266(20)
XRD chart Coulsonite

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)

4.50 - 5.00

VHN (Hardness Vickers)

340 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

5.19 (gemessen)

5.157 ( ρ calc. Mineralienatlas )

Instability

+ H2SO4

(Co-)Type locality

(Co-)Type locality

USA/Nevada/Churchill Co./Mineral Basin District/Eisengrube Buena Vista

Preface

Name from

Arthur Lennox Coulson (1898–1955), Geologe und früherer Mitarbeiter beim Indian Geological Survey

Author (Name, Year)

Radtke, 1962

References

Handbook of Mineralogy (Anthony et al.), 3 (1997), 142

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: 14. Sep 2024 - 16:26:10

Other languages

German

Coulsonit

Spanish

Coulsonita

English

Coulsonite

French

Coulsonite

Russian

Кулсонит

Simplified Chinese

钒磁铁矿

CNMNC symbol

Symbol

Cou

Locations with GPS information

IDs

GUSID (Global unique identifier short form) q-2Tsq7n0kKCS4kPMlRlSQ
GUID (Global unique identifier) B293EDAB-E7AE-42D2-824B-890F32546549
Database ID 826