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Brunogeierite

Pictures (2 Images total)

Brunogeierit
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Brunogeierit

Bildbreite: 2 mm, Fundort: Tsumeb Mine, Tsumeb, Region Oshikoto, Namibia

Copyright: Richard De Nul
Contribution: thdun5 2010-08-22
Locality: Tsumeb Mine / Tsumeb / Oshikoto (Otjikoto), Region / Namibia
Brunogelerit
Views (Image: 1356810601): 809
Brunogelerit (SNr: A012570)

Kubischer abgerollter schwarzer Kristall, BB = 3,8 mm, Fundort: Tsumeb Mine, Tsumeb, Region Oshikoto, Namibia.

Collection: Lithothek der Münchener Micromounter
Copyright: Bebo
Contribution: Münchener Micromounter 2012-12-29
Locality: Tsumeb Mine / Tsumeb / Oshikoto (Otjikoto), Region / Namibia

Collectors Summary

Color grau, schwarz
Hardness (Mohs) 4.5
Crystal System kubisch, Fd3m
Morphology kubisch

Chemism

Chem­ical formula

(Fe2+)2Ge4+O4

Addi­tional chem. informa­tion

Nesogermanat, Mitglied der Ringwoodit-Gruppe

Chem­ical com­po­si­tion

Eisen, Germanium, Sauerstoff

Unit weight: 248.32912 u; Number of atoms in the formula: 7

Info

Empirical formula:

(Fe)2GeO4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

25.77

4

57.14

15.9994300

63.9977200

Iron

Fe

44.98

2

28.57

55.8452000

111.6904000

Germanium

Ge

29.25

1

14.29

72.6410000

72.6410000

Strunz 9th edi­tion incl. updates

9.AC.15

9: Silikate (Germanate)
A: Inselsilikate (Nesosilikate)
C: Insel(Neso)silikate ohne weitere Anionen; Kationen in oktahedraler [6] Koordination
15:Ringwoodit-Gruppe

Lapis Clas­sifica­tion

IV/B.04-050

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

9.AB.380

9: SILICATES
A: Nesosilicates
B: Olivine-Group

Dana 8th edi­tion

07.02.02.07

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

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Spinel supergroup  ⇒ Oxyspinel group  ⇒ Ulvöspinel subgroup

Optical Properties

Color

grau, schwarz

Diaphane­ity (Trans­parency)

opak

Crystallography

Crystal Sys­tem

kubisch

Class (H-M)

m3m

Space Group number

227

Space Group

Fd3m

Cell param­e­ters a (Å)

8.409

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)

594.611

X-Ray Pow­der Diffrac­tion

2.972(60),
2.540(100),
2.097(20),
1.720(40),
1.615(70),
1.484(90),
1.283(30),
1.095(60)

XRD chart Brunogeierite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Morphol­ogy

kubisch

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

4.5

VHN (Hard­ness Vick­ers)

280 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

5.51

5.548 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Namibia/Oshikoto (Otjikoto), Region/Tsumeb/Tsumeb Mine

Preface

Name from

Bruno H. Geier, einem ehemaligen Mineralogen in Tsumeb

Author (Name, Year)

Ottemann & Nuber, 1972

References

Neues Jahrbuch für Mineralogie, Monatshefte (1972), 263.

NOMENCLATURE PROPOSALS APPROVED IN APRIL 2011, IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) NEWSLETTER 9, Mineralogical Magazine, August 2011, Vol. 75(4), pp. 2535-2540 - [Formel, Gruppe]

IMA group assignments

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

Ringwoodite

(Mg,Fe2+)2SiO4

kubisch : m3m : Fd3m

9.AC.15

Brunogeierite

(Fe2+)2Ge4+O4

kubisch : m3m : Fd3m

9.AC.15

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

Magnesiocoulsonite

MgV23+O4

kubisch : m3m : Fd3m

IV/B.04-005

Vuorelainenite

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

kubisch : m3m : Fd3m

IV/B.04-010

Coulsonite

Fe2+V23+O4

kubisch : m3m : Fd3m

IV/B.04-020

Qandilite

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

kubisch : m3m : Fd3m

IV/B.04-030

Ulvöspinel

TiFe22+O4

kubisch : m3m : Fd3m

IV/B.04-040

Brunogeierite

(Fe2+)2Ge4+O4

kubisch : m3m : Fd3m

IV/B.04-050

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

Ringwoodite

(Mg,Fe2+)2SiO4

kubisch : m3m : Fd3m

9.AB.300

Brunogeierite

(Fe2+)2Ge4+O4

kubisch : m3m : Fd3m

9.AB.380

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

CNMNC (IMA)-Number

IMA 1972-004

CNMNC symbol

Symbol

Bng

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

German pages

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