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Bartelkeite

Collectors Summary

Color farblos, hellgrün
Streak color weiß
Hardness (Mohs) 4
Cleavages {101} deutlich
Solubility +++ heiße HCl
Crystal System monoklin, P21, P21/m

Chemism

Chemical formula

PbFeGeVI(GeIV2O7)(OH)2·H2O

Additional chem. information

isotypisch mit der Hochdruckversion P21/m von Lawsonit

Chemical composition

Blei, Eisen, Germanium, Iod, Sauerstoff, Vanadium, Wasserstoff

Unit weight: 645.004288 u; Number of atoms in the formula: 19

Info

Empirical formula:

PbFeGe(Ge2O7)(OH)2·H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.63

4

21.05

1.0079470

4.0317880

Oxygen

O

24.81

10

52.63

15.9994300

159.9943000

Iron

Fe

8.66

1

5.26

55.8452000

55.8452000

Germanium

Ge

33.79

3

15.79

72.6410000

217.9230000

Lead

Pb

32.13

1

5.26

207.2100000

207.2100000

Analysis wt%

GeO2 : 53.70, PbO : 34.00, FeO : 12.10 (Ref: Chemie der Erde 81)

Strunz 9th edition incl. updates

9.JA.10

9: Silikate (Germanate)
J: Germanate
A:
10:Bartelkeit-Gruppe

Lapis Classification

IV/C.08-060

IV: OXIDE
C: Oxide mit Verhältnis Metall : Sauerstoff = 2:3 (M2O3 und ver-wandte Verbindungen)
8: Magnetoplumbit- Gruppe

Classification by Hölzel

4.BE.360

4: OXIDES
B: Spinels R3O4
E: Mn-Spinels

Dana 8th edition

07.06.02.01

07: Multiple Oxides
06: Multiple Oxides where A (B)4 X9

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos, hellgrün

Streak color

weiß

Diaphaneity (Transparency)

transparent

max. Birefringence

0.028

Birefringence chart\! Bartelkeite title=Birefringence chart Bartelkeite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

1.885

RI value β

1.910

RI value γ / ε

1.913

Ri mean

1.903

2V angle

Biaxial (-) 35°

Crystallography

Crystal System

monoklin

Class (H-M)

2, 2/m

Space Group number

4, 11

Space Group

P21, P21/m

Cell parameters a (Å)

5.431

Cell parameters b (Å)

13.689

Cell parameters c (Å)

5.892

Cell parameters a/b or c/a

0.397

Cell parameters c/b

0.430

Cell parameters α

90°

Cell parameters β

111.78

Cell parameters γ

90°

Z

2

Volumne (ų)

406.771

X-Ray Powder Diffraction

5.08(50),
4.74(60),
4.42(80),
3.50(50),
2.91(100),
2.87(80),
2.75(70),
2.20(70)

XRD chart Bartelkeite

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

Density (g/cm³)

4.97

5.266 ( ρ calc. Mineralienatlas )

Cleavages

{101} deutlich

Instability

+++ heiße HCl

(Co-)Type locality

(Co-)Type locality

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

Type material

Archiv der Universität Stuttgart, "Mineralogische Sammlung Prof. Keller"

Collection number of type material

TM-79.29-Tn / 0/824-s27/2

Paragenesis of type material

Germanit, Renierit, Tennantit, Bleiglanz, Chalkosin, Quarz, Wulfenit

Preface

Author (Name, Year)

Keller & Hess & Dunn, 1981

References

Chemie der Erde 40 (1981), 201

Origlieri, M.J., Yang, H., Downs, R.T., Posner, E.S., Domanik, K.J., Pinch, W.W. (2012): The crystal structure of bartelkeite, with a revised chemical formula, PbFeGeVI(GeIV2O7)(OH)2·H2O, isotypic with high-pressure P21/m lawsonite. American Mineralogist, 97, 1812-1815. - [Neue Formel]

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

Bartelkeite

PbFeGeVI(GeIV2O7)(OH)2·H2O

monoklin : 2, 2/m : P21, P21/m

9.JA.10

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

Yimengite

K(Cr,Ti,Fe,Mg)12O19

hexagonal : 6/mmm : P63/mmc

IV/C.08-010

Hawthorneite

Ba[Ti3Cr4Fe4Mg]O19

hexagonal : 6/mmm : P63/mmc

IV/C.08-020

Haggertyite

(Ba,K)(Mg,Cr3+)Fe42+Fe23+Ti54+O19

hexagonal : 6/mmm : P63/mmc

IV/C.08-022

Batiferrite

Ba(Fe2+,Mg,Mn2+)2Fe83+Ti24+O19

hexagonal : 6/mmm : P63/mmc

IV/C.08-025

Hibonite

(Ca,Ce)(Mg,Fe2+)Al10(Ti4+,Al)O19

hexagonal : 6/mmm : P63/mmc

IV/C.08-030

Hibonite-(Fe)

(Fe,Mg)Al12O19

hexagonal : 6/mmm : P63/mmc

IV/C.08-032

Nežilovite

PbZn22+(Fe3+,Mn3+,Al)8(Mn4+,Ti4+)2O19

hexagonal : 6/mmm : P63/mmc

IV/C.08-035

Magnetoplumbite

Pb(Mn2+,Mg)(Fe3+,Mn3+)10(Sb5+,Fe3+)O19

hexagonal : 6/mmm : P63/mmc

IV/C.08-040

Zenzénite

Pb3Fe3+4Mn4+3O15

hexagonal : 6/mmm : P63/mcm

IV/C.08-045

Lindqvistite

Pb2(Mn2+,Mg)2Fe3+15-16O27

hexagonal : 6/mmm : P63/mmc

IV/C.08-047

Plumboferrite

Pb2(Fe,Mn2+,Mg)11O19

hexagonal : 6/mmm : P63/mmc

IV/C.08-050

Barioferrite

BaFe3+12O19

hexagonal : 6/mmm : P63/mmc

IV/C.08-055

Bartelkeite

PbFeGeVI(GeIV2O7)(OH)2·H2O

monoklin : 2, 2/m : P21, P21/m

IV/C.08-060

Otjisumeite

PbGe4O9

triklin : 1, 1 : P1, P1

IV/C.08-070

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

Bartelkeite

PbFeGeVI(GeIV2O7)(OH)2·H2O

monoklin : 2, 2/m : P21, P21/m

4.BE.360

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Cesàrolite

PbH2Mn34+O8

07.06.01.01

Bartelkeite

PbFeGeVI(GeIV2O7)(OH)2·H2O

monoklin : 2, 2/m : P21, P21/m

07.06.02.01

Kamiokite

Fe2Mo3O8

hexagonal : 6mm : P63mc

07.06.03.01

Other languages

Russian

Бартелкеит

German

Bartelkeit

Spanish

Bartelkeíta

English

Bartelkeite

French

Bartelkeite

IMA Number

IMA 1979-029

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

German pages

DeWikiPedia - search for: Bartelkeit
Google-Bilder-Suche - search for: Bartelkeit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Bartelkeit

English pages

Mindat - search for: Bartelkeite
Webmineral - search for: Bartelkeite
Handbook-of-Mineralogy - search for: Bartelkeite
RRUFF Database-of-Raman-spectroscopy - search for: Bartelkeite
American-Mineralogist-Crystal-Structure-Database - search for: Bartelkeite
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Russian pages

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Mineral Dealer

German pages

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