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Donbassite

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

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Nimite

(Ni,Mg,Fe2+)5Al(Si3Al)O10(OH)8

monoklin : 2/m : C2/m

9.EC.55

Odinite

(Fe3+,Mg,Al,Fe2+,Ti,Mn)2.4(Si1.8Al0.2)O5(OH)4

9.EC.55

Sudoite

Mg2Al3(Si3Al)O10(OH)8

monoklin : 2/m : C2/m

9.EC.55

'Chlorite group'

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

9.EC.55

Cookeite

LiAl4(Si3Al)O10(OH)8

triklin : 1 : C1

9.EC.55

Chamosite

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

monoklin : 2/m : C2/m

9.EC.55

'Delessite' (Var.v. Chamosite)

(Mg,Fe,Fe,Al)(Si,Al)4O10(O,OH)8

9.EC.55

Gonyerite

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

9.EC.55

Donbassite

Al2.3[(OH)8|AlSi3O10]

monoklin : 2 : C2

9.EC.55

'Odinite-1T' (Pol.v. Odinite)

(Fe,Mg,Al)2.5(Si,Al)2O5(OH)4

9.EC.55

Pennantite

Mn2+5Al(Si3Al)O10(OH)8

monoklin : 2/m : C2/m

9.EC.55

Glagolevite

NaMg6[(OH,O)8|AlSi3O10]·H2O

triklin : 1 : C1

9.EC.55

Clinochlore

(Mg,Fe2+)5Al(Si3Al)O10(OH)8

monoklin : 2/m : C2/m

9.EC.55

Baileychlore

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

triklin : 1, 1 : C1, C1

9.EC.55

Borocookeite

Li1-1.5Al4-3.5[(OH,F)8|(B,Al)Si3O10]

monoklin : 2/m : C2/m

9.EC.55

'Chromian Clinochlore' (Var.v. Clinochlore)

Mg5(Al,Cr)2Si3O10(OH)8

9.EC.55

'Orthochamosite' (Pol.v. Chamosite)

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

9.EC.55

Franklinfurnaceite

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

monoklin : 2 : C2

9.EC.55

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Donbassite

Al2.3[(OH)8|AlSi3O10]

monoklin : 2 : C2

VIII/H.23-005

Sudoite

Mg2Al3(Si3Al)O10(OH)8

monoklin : 2/m : C2/m

VIII/H.23-010

Clinochlore

(Mg,Fe2+)5Al(Si3Al)O10(OH)8

monoklin : 2/m : C2/m

VIII/H.23-020

Chamosite

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

monoklin : 2/m : C2/m

VIII/H.23-030

'Orthochamosite' (Pol.v. Chamosite)

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

VIII/H.23-040

Baileychlore

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

triklin : 1, 1 : C1, C1

VIII/H.23-050

Pennantite

Mn2+5Al(Si3Al)O10(OH)8

monoklin : 2/m : C2/m

VIII/H.23-060

Nimite

(Ni,Mg,Fe2+)5Al(Si3Al)O10(OH)8

monoklin : 2/m : C2/m

VIII/H.23-070

Gonyerite

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

VIII/H.23-080

Cookeite

LiAl4(Si3Al)O10(OH)8

triklin : 1 : C1

VIII/H.23-090

Borocookeite

Li1-1.5Al4-3.5[(OH,F)8|(B,Al)Si3O10]

monoklin : 2/m : C2/m

VIII/H.23-095

Manandonite

Li2Al4[(Si2AlB)O10](OH)8

triklin : 1 : C1

VIII/H.23-100

Jadarite

LiNaB3SiO7(OH)

VIII/H.23-105

Franklinfurnaceite

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

monoklin : 2 : C2

VIII/H.23-110

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Donbassite

Al2.3[(OH)8|AlSi3O10]

monoklin : 2 : C2

9.EM.200

'Zinalsite'

Zn7Al4(SiO4)6(OH)2·9H2O

9.EM.220

Chrysotile

Mg3Si2O5(OH)4

9.EM.24

'Clinochrysotile' (Pol.v. Chrysotile)

Mg3Si2O5(OH)4

monoklin : 2/m : C2/m

9.EM.240

'Orthochrysotile' (Pol.v. Chrysotile)

Mg3Si2O5(OH)4

orthorhombisch : mm2 : Ccm21

9.EM.245

'Parachrysotile' (Pol.v. Chrysotile)

Mg3Si2O5(OH)4

9.EM.248

Amesite

Mg2Al(SiAl)O5(OH)4

triklin : 1 : C1

9.EM.250

Manandonite

Li2Al4[(Si2AlB)O10](OH)8

triklin : 1 : C1

9.EM.260

Antigorite

(Mg,Fe2+)3Si2O5(OH)4

monoklin : m : Cm

9.EM.280

Franklinfurnaceite

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

monoklin : 2 : C2

9.EM.290

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Донбассит

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