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Bartelkeite

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

7.6.2.1

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

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

Solubility

+++ 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

Reference List

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]

Corresponding author (Name, Year)

Keller & Hess & Dunn, 1981

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system | Space group | Space Group | Indenture number]

Bartelkeite

PbFeGeVI(GeIV2O7)(OH)2·H2O

monoklin

P21, P21/m

2, 2/m

9.JA.10

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system | Space group | Space Group | Indenture number]

Yimengite

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

hexagonal

P63/mmc

6/mmm

IV/C.08-010

Hawthorneite

Ba[Ti3Cr4Fe4Mg]O19

hexagonal

P63/mmc

6/mmm

IV/C.08-020

Haggertyite

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

hexagonal

P63/mmc

6/mmm

IV/C.08-022

Batiferrite

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

hexagonal

P63/mmc

6/mmm

IV/C.08-025

Hibonite

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

hexagonal

P63/mmc

6/mmm

IV/C.08-030

Hibonite-(Fe)

(Fe,Mg)Al12O19

hexagonal

P63/mmc

6/mmm

IV/C.08-032

Nežilovite

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

hexagonal

P63/mmc

6/mmm

IV/C.08-035

Magnetoplumbite

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

hexagonal

P63/mmc

6/mmm

IV/C.08-040

Zenzénite

Pb3Fe3+4Mn4+3O15

hexagonal

P63/mcm

6/mmm

IV/C.08-045

Lindqvistite

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

hexagonal

P63/mmc

6/mmm

IV/C.08-047

Plumboferrite

Pb2(Fe,Mn2+,Mg)11O19

hexagonal

P63/mmc

6/mmm

IV/C.08-050

Barioferrite

BaFe3+12O19

hexagonal

P63/mmc

6/mmm

IV/C.08-055

Bartelkeite

PbFeGeVI(GeIV2O7)(OH)2·H2O

monoklin

P21, P21/m

2, 2/m

IV/C.08-060

Otjisumeite

PbGe4O9

triklin

P1, P1

1, 1

IV/C.08-070

Related minerals "Hoelzel Classification" [Mineral | Chemical formula | Crystal system | Space group | Space Group | Indenture number]

Bartelkeite

PbFeGeVI(GeIV2O7)(OH)2·H2O

monoklin

P21, P21/m

2, 2/m

4.BE.360

Other languages

German

Bartelkeit

Spanish

Bartelkeíta

English

Bartelkeite

French

Bartelkeite

Alternative Name

IMA 1979-029

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