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Magnesiocoulsonite

Pictures (1 Images total)

Chrom-Tremolit (grün) mit Magnesiocoulsonit (schwarz)
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Chrom-Tremolit (grün) mit Magnesiocoulsonit (schwarz)
Bildbreite: 3 mm; Fundort: Pereval Marmorstbr., Sljudjanka, Baikalsee, Irkutsk Oblast, Sibiren, Russland
Copyright: Pavel M. Kartashov; Contribution: Philip Blümner
Location: Russland/Sibirien, Föderationskreis/Irkutsk (Irkutskaja), Oblast/Baikalsee/Sljudjanka (Sludyanka; Slyudyanka)/Pokhabikha-Tal/Pereval Marmorsteinbruch (Grube Kaber)
Mineral: Chromian Tremolite, Magnesiocoulsonite
Image: 1244321785
Rating: 4 (votes: 2)
License: Usage for Mineralienatlas project only
Chrom-Tremolit (grün) mit Magnesiocoulsonit (schwarz)

Bildbreite: 3 mm; Fundort: Pereval Marmorstbr., Sljudjanka, Baikalsee, Irkutsk Oblast, Sibiren, Russland
Copyright: Pavel M. Kartashov
Contribution: Philip Blümner 2009-06-06
Locality: Pereval Marmorsteinbruch (Grube Kaber) / Pokhabikha-Tal / Sljudjanka (Sludyanka; Slyudyanka) / Baikalsee / Irkutsk (Irkutskaja), Oblast / Sibirien, Föderationskreis / Russland

Collectors Summary

Color hellgrau
Streak color schwarz
Hardness (Mohs) 6.5
Cleavages keine
Fracture uneben
Crystal System kubisch, Fd3m

Chemism

Chemical formula

MgV23+O4

Chemical composition

Magnesium, Sauerstoff, Vanadium

Unit weight: 190.1858 u; Number of atoms in the formula: 7

Info

Empirical formula:

MgV2O4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

33.65

4

57.14

15.9994300

63.9977200
Magnesium

Mg

12.78

1

14.29

24.3050600

24.3050600
Vanadium

V

53.57

2

28.57

50.9415100

101.8830200

Analysis wt%

Ø V2O3 : 50.07, Cr2O3 : 28.09, MgO : 20.90 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 95)

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.04-005

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.120

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

Dana 8th edition

07.02.04.03

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

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Spinel supergroup  ⇒ Oxyspinel group  ⇒ Spinel subgroup

Optical Properties

Color

hellgrau

Streak color

schwarz

Diaphaneity (Transparency)

opak

Crystallography

Crystal System

kubisch

Class (H-M)

m3m

Space Group number

227

Space Group

Fd3m

Cell parameters a (Å)

8.385

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)

589.534

X-Ray Powder Diffraction

4.84(90),
2.95(30),
2.52(100),
2.093(80),
1.612(80),
1.482(90),
1.092(70),
1.048(50)
XRD chart Magnesiocoulsonite

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)

6.5

VHN (Hardness Vickers)

969 (100g)

Density (g/cm³)

4.3

4.285 ( ρ calc. Mineralienatlas )

Cleavages

keine

Fracture

uneben

Tenacity

spröde

(Co-)Type locality

(Co-)Type locality

Russland/Sibirien, Föderationskreis/Irkutsk (Irkutskaja), Oblast/Baikalsee/Sljudjanka (Sludyanka; Slyudyanka)/Pokhabikha-Tal/Pereval Marmorsteinbruch (Grube Kaber)

Preface

Author (Name, Year)

Reznitskiy & Sklyarov & Ushchaporskaya, 1995

References

Zapiski Vserossiskogo Mineralogicheskogo Obshchetstva 124 (1995) (4), 91

IMA group assignments

Other languages

German

Magnesiocoulsonit

Spanish

Magnesiocoulsonita

French

Magnesiocoulsonite

English

Magnesiocoulsonite

Russian

Магнезиокулсонит

Japanese

苦土ｺｳﾙｿﾅｲﾄ

CNMNC (IMA)-Number

IMA 1994-034

CNMNC symbol

Symbol

Mcou

Locations with GPS information

IDs

GUSID (Global unique identifier short form) OVSL-yjj3ESVZg97KgV6Wg
GUID (Global unique identifier) FB8B5439-E328-44DC-9566-0F7B2A057A5A
Database ID 2297