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Vanackerite

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Vanackerit
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Vanackerit
Vanackeritkristall, Tsumeb Mine, Namibia; BB ~ 2 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: Namibia/Oshikoto (Otjikoto), Region/Tsumeb/Tsumeb Mine
Mineral: Vanackerite
Image: 1635361185
Rating: 8 (votes: 1)
License: Usage for Mineralienatlas project only
Vanackerit

Vanackeritkristall, Tsumeb Mine, Namibia; BB 2 mm, analysiert

Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2021-10-27
Locality: Tsumeb Mine / Tsumeb / Oshikoto (Otjikoto), Region / Namibia

Collectors Summary

Color hellgelb
Crystal System trigonal, P3

Chemism

Chemical formula

Pb4Cd(AsO4)3Cl

Empirical formula (analysis)

Pb4.10Cd0.98As2.92O12.07Cl0.61

Additional chem. information

Verwandt mit der Apatit-Gruppenstruktur

Chemical composition

Arsen, Blei, Cadmium, Chlor, Sauerstoff

Unit weight: 1393.23521394 u; Number of atoms in the formula: 20.68

Info

Empirical formula:

Pb4.10Cd0.98As2.92O12.07Cl0.61

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

13.86

12.07

58.37

15.9994300

193.1131201

Chlorine

Cl

1.55

0.61

2.95

35.4532000

21.6264520

Arsenic

As

15.70

2.92

14.12

74.9216020

218.7710778

Cadmium

Cd

7.91

0.98

4.74

112.4118000

110.1635640

Lead

Pb

60.98

4.1

19.83

207.2100000

849.5610000

Analysis wt%

PbO : 64.44, CdO : 8.82, As2O5 : 23.59, Cl : 1.51, O ? Cl -0.34, Total : 98.02

Strunz 9th edition incl. updates

8.BN.05

8: Phosphate, Arsenate, Vanadate
B: Phosphate, etc., mit weitere Anionen, ohne H2O
N: Mit ausschließlich [Kationen] (OH, etc.):RO4 = 0.33:1
05:Apatit-Gruppe

Lapis Classification

VII/B.39-145

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
B: Wasserfreie Phosphate, mit fremden Anionen F,Cl,O,OH
39: Mittelgroße und große Kationen: Mg-Cu-Zn und Ca-Na-K-Ba-Pb; Apatit-Gruppe

Classification by Hölzel

8.BO.685

8: PHOSPHATES ARSENATES VANADATES
B: Phosphates (+Anions -Water)
O: Apatite Supergroup
6: Belovites with Ca,Sr,Ba

IMA status

anerkannt - April 2012 - CNMNC Newsletter No. 13, June 2012, page 808; Mineralogical Magazine, 76, 807-817

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Apatite Supergroup

Optical Properties

Color

hellgelb

Ri mean

2.04

Crystallography

Crystal System

trigonal

Class (H-M)

3

Space Group number

143

Space Group

P3

Cell parameters a (Å)

10.032

Cell parameters b (Å)

-

Cell parameters c (Å)

7.300

Cell parameters a/b or c/a

0.728

Cell parameters c/b

-

Z

2

Volume (ų)

636.251

Crystal structure

Struktur bestimmt

X-Ray Powder Diffraction

4.140(10), 3.290(34), 2.982(100), 2.067(16), 1.944(11), 1.875(8), 1.635(10), 1.523(10)

XRD chart Vanackerite

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

Crystals 3D

Open larger view

Physical Properties

Density (g/cm³)

7.28 (berechnet)

7.272 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

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

Type material

Mineralogisches Museeum der Universität von Hamburg, Hamburg, Deutschland

Collection number of type material

TS 706

Paragenesis of type material

Anglesit, Gips

Preface

Author (Name, Year)

Jochen Schlüter, Thomas Malcherek und Georg Gebhard (2012)

References

CNMNC Newsletter No. 13, June 2012, page 808; Mineralogical Magazine, 76, 807-817

Schlüter, J., Malcherek, T. & Gebhard, G. - Vanackerite, a new lead cadmium arsenate of the apatite supergroup from Tsumeb, Namibia. Neues Jahrbuch für Mineralogie - Abhandlungen: Journal of Mineralogy and Geochemistry 193 (2016), 79-86.

CNMNC Newsletter No. 50; Mineralogical Magazine, 31 [Formel]

IMA group assignments

Other languages

German

Vanackerit

English

Vanackerite

CNMNC (IMA)-Number

IMA 2011-114

CNMNC symbol

Symbol

Vnk

Locations with GPS information

IDs

GUSID (Global unique identifier short form) zNkbgS9H-EmJ1S5uxJmDpQ
GUID (Global unique identifier) 811BD9CC-472F-49F8-89D5-2E6EC49983A5
Database ID 7393