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lattig-taflige bräunliche Kristalle von Escheit, Aris-Steinbrüche, Windhoek, Namibia; BB < 1mm
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: Namibia/Khomas, Region/Windhoek-Land, Kreis/Aris/Aris-Steinbrüche (Ariskop Quarry; Railway Quarry)
Mineral: Escheite
Image: 1572890156
Rating: 9 (votes: 2)
License: Usage for Mineralienatlas project only
Escheit

lattig-taflige bräunliche Kristalle von Escheit, Aris-Steinbrüche, Windhoek, Namibia; BB < 1mm

Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2019-11-04
Locality: Aris-Steinbrüche (Ariskop Quarry; Railway Quarry) / Aris / Windhoek-Land, Kreis / Khomas, Region / Namibia

Collectors Summary

Crystal System orthorhombisch, Bbm2

Chemism

Chemical formula

Ca2NaMnTi5[Si12O34]O2(OH)3·12H2O

Chemical composition

Calcium, Mangan, Natrium, Silicium, Titan, Sauerstoff, Wasserstoff

Unit weight: 1577.6319791 u; Number of atoms in the formula: 99

Info

Empirical formula:

Ca2NaMnTi5[Si12O34]O2(OH)3·12H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

1.73

27

27.27

1.0079470

27.2145690

Oxygen

O

51.72

51

51.52

15.9994300

815.9709300

Sodium

Na

1.46

1

1.01

22.9897702

22.9897702

Silicon

Si

21.36

12

12.12

28.0855300

337.0263600

Calcium

Ca

5.08

2

2.02

40.0784000

80.1568000

Titanium

Ti

15.17

5

5.05

47.8671000

239.3355000

Manganese

Mn

3.48

1

1.01

54.9380499

54.9380499

Strunz 9th edition incl. updates

9.DG.55

9: Silikate (Germanate)
D: Ketten- und Bandsilikate (Inosilikate)
G: Ketten- und Bandsilikate mit 3-periodischen Einfach- und Mehrfachketten
55:Epididymit-Gruppe

IMA status

anerkannt - Nov. 2018 CNMNC Newsletter im Oktober und November 2018

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Zorite group

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mm2

Space Group number

40

Space Group

Bbm2

Cell parameters a (Å)

14.2465(2)

Cell parameters b (Å)

22.9871(4)

Cell parameters c (Å)

13.7304(2)

Cell parameters a/b or c/a

0.62

Cell parameters c/b

0.597

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Volume (ų)

4496.51

Crystal structure

Zorit-Gruppe; Struktur bestimmt

X-Ray Powder Diffraction

6.873(30), 6.823(16), 5.227(20), 3.411(13), 3.056(22), 3.034(17), 2.950(16), 2.559(20)

XRD chart Escheite

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

Crystals 3D

Open larger view

(Co-)Type locality

(Co-)Type locality

Namibia/Khomas, Region/Windhoek-Land, Kreis/Aris/Aris-Steinbrüche (Ariskop Quarry; Railway Quarry)

Type material

Das Typenmaterial ist in den mineralogischen Sammlungen des Museo delle Collezioni di Mineralogia, Gemmologia, Petrologia e Giacimentologia, Department of Earth Sciences "A. Desio", Universität Mailand, Katalognummer MCMGPG-H2018-002 hinterlegt.

Preface

Name from

Joachim Esche

Author (Name, Year)

Fernando Cámara, Fabrizio Nestola, Marco E. Ciriotti, Uwe Kolitsch, Marco Merlini, Günter Blass und Ralph Wartha (2018)

References

Cámara, F., Nestola, F., Ciriotti, M.E., Kolitsch, U., Merlini, M., Blass, G. and Wartha, R. (2018) Escheite, IMA 2018-099. CNMNC Newsletter No. 46, December 2018, page xxxx; Mineralogical Magazine, 82, xxxx–xxxx.

IMA group assignments

Other languages

German

Escheit

English

Escheite

CNMNC (IMA)-Number

IMA 2018-099

CNMNC symbol

Symbol

Esc

Locations with GPS information

IDs

GUSID (Global unique identifier short form) 1ORHmQpyIUeoGrIIsaQP_g
GUID (Global unique identifier) 9947E4D4-720A-4721-A81A-B208B1A40FFE
Database ID 8570