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Donbassite (Donbassit)

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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

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

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

Volumne (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

 
Chlorite group
(Fe,Mg,Al)6(Si,Al)4O10(OH)8
 
 

 
 
Baileychlore
(Zn,Fe2+,Al,Mg)6(Si,Al)4O10(OH)8
triklin
C1, C1

 
 
Borocookeite
Li1-1.5Al4-3.5[(OH,F)8|(B,Al)Si3O10]
monoklin
C2/m

 
 
Chamosite
(Fe2+,Mg,Fe3+)5Al(Si3Al)O10(OH,O)8
monoklin
C2/m

 
 
Clinochlore
(Mg,Fe2+)5Al(Si3Al)O10(OH)8
monoklin
C2/m

 
 
Cookeite
LiAl4(Si3Al)O10(OH)8
triklin
C1

 
 
Donbassite
Al2.3[(OH)8|AlSi3O10]
monoklin
C2

 
 
Franklinfurnaceite
Ca2(Fe3+,Al)Mn3+Mn32+Zn2Si2O10(OH)8
monoklin
C2

 
 
Glagolevite
NaMg6[(OH,O)8|AlSi3O10]·H2O
triklin
C1

 
 
Gonyerite
Mn2+5Fe3+(Si3Fe3+O10)(OH)8
orthorhombisch
 

 
 
Nimite
(Ni,Mg,Fe2+)5Al(Si3Al)O10(OH)8
monoklin
C2/m

 
 
Orthochamosite
(Fe2+,Mg,Fe3+)5Al(Si3Al)O10(OH,O)8
orthorhombisch
 

 
 
Pennantite
Mn2+5Al(Si3Al)O10(OH)8
monoklin
C2/m

 
 
Sudoite
Mg2Al3(Si3Al)O10(OH)8
monoklin
C2/m

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Actuality: 23. Mar 2023 - 16:06:37

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Донбассит

CNMNC symbol

Symbol

Dbs

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