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Donbassite

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Donbassit
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Donbassit
farbloses/schmutzig weißes Aggregat von Donbassit, Nagol`nyi Kryazh, Donezk, Ukraine; BB ~ 3 mm, analysiert
Copyright: mintreasure.com; Contribution: openpit
Location: Ukraine/Donezk (Donetsk), Oblast/Donezk (Donetsk)/Nagol'nyi Kryazh
Mineral: Donbassite
Image: 1646997271
License: Usage for Mineralienatlas project only
Donbassit

farbloses/schmutzig weißes Aggregat von Donbassit, Nagol`nyi Kryazh, Donezk, Ukraine; BB 3 mm, analysiert
Copyright: mintreasure.com
Contribution: openpit 2022-03-11
Locality: Nagol'nyi Kryazh / Donezk (Donetsk) / Donezk (Donetsk), Oblast / Ukraine

Collectors Summary

Color weiß, hellgrün, fast farblos
Hardness (Mohs) 2.5
Crystal System monoklin, C2

Chemism

Chemical formula

Al2.3[(OH)8|AlSi3O10]

Chemical composition

Aluminium, Silicium, Sauerstoff, Wasserstoff

Unit weight: 469.34898206 u; Number of atoms in the formula: 32.3

Info

Empirical formula:

Al2.3[(OH)8AlSi3O10]

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

1.72

8

24.77

1.0079470

8.0635760
Oxygen

O

61.36

18

55.73

15.9994300

287.9897400
Aluminium

Al

18.97

3.3

10.22

26.9815382

89.0390761
Silicon

Si

17.95

3

9.29

28.0855300

84.2565900

Strunz 9th edition incl. updates

9.EC.55

9: Silikate (Germanate)
E: Schichtsilikate (Phyllosilikate)
C: Schichtsilikate (Phyllosilikate) mit Glimmer Tafeln, zusammengesetzt aus tetrahedralen oder octahedralen Netzen
55:Chlorit Gruppe

Lapis Classification

VIII/H.23-005

VIII: SILIKATE
H: Schichtsilikate
23: Glimmerartige Schicht-silikate mit Baugruppen [Si4O10] 4- und verwandte Strukturen; Chlorit-Gruppe

Classification by Hölzel

9.EM.200

9: SILICATES
E: Phyllosilicates
M: Serpentine-Group
2: Amesite-Group

IMA status

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Chlorite group

Optical Properties

Color

weiß, hellgrün, fast farblos

RI value α / ω / n

1.603

Ri mean

1.603

2V angle

Biaxial

Crystallography

Crystal System

monoklin

Class (H-M)

2

Space Group number

5

Space Group

C2

Cell parameters a (Å)

5.174

Cell parameters b (Å)

8.956

Cell parameters c (Å)

14.26

Cell parameters a/b or c/a

0.578

Cell parameters c/b

1.592

Cell parameters α

90°

Cell parameters β

97.83

Cell parameters γ

90°

Z

2

Volume (ų)

654.624

X-Ray Powder Diffraction

14.13(60),
7.063(60),
4.709(100),
4.478(50),
3.983(90),
3.532(60),
2.515(50),
2.32(100)
XRD chart Donbassite

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

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

2.5

VHN (Hardness Vickers)

53 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.66 (berechnet)

2.381 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Ukraine/Donezk (Donetsk), Oblast/Donezk (Donetsk)

Preface

Occurrences

Kesselberg bei Triberg, Schwarzwald.

Author (Name, Year)

Lazarenko, 1940

References

Handbook of Mineralogy (Anthony et al.), 2 (1995), 196

Clays and Clay Minerals 37 (1989), 193

Doklady Akademii Nauk SSSR 28 (1940), 519

IMA group assignments

Other languages

German

Donbassit

Spanish

Donbassita

French

Donbassite

English

Donbassite

Russian

Донбассит

CNMNC symbol

Symbol

Dbs

Locations with GPS information

IDs

GUSID (Global unique identifier short form) j4vGBl7wuEGQPop0ziKdXQ
GUID (Global unique identifier) 06C68B8F-F05E-41B8-903E-8A74CE229D5D
Database ID 955