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Apjohnite

Pictures (3 Images total)

Apjohnit
Views (Image: 1175352256): 1812
Apjohnit

als feinkristalline Masse; Fundort: Mazarron, Murcia, Spanien; Bildbreite 6 mm

Copyright: loismin
Contribution: loismin 2007-03-31
Locality: Mazarrón, Bergbaurevier / Mazarrón / Murcia / Spanien
Apjohnit
Views (Image: 1479829381): 532
Apjohnit (SNr: A002868)

von Terlan, Bozen, Südtirol, Italien; faserige weiße Kristalle mit Seidenglanz; BB = 2,0 mm;

Collection: Lithothek der Münchener Micromounter
Copyright: Bebo
Contribution: Münchener Micromounter 2016-11-22
Locality: Terlan / Etschtal / Südtirol (Bozen), Provinz / Trentino-Südtirol (Trentino-Alto Adige), Region / Italien
Ilesit (gelblich) auf Apjohnit (weiß)
Views (Image: 1506439183): 877
Ilesit (gelblich) auf Apjohnit (weiß)

Santa Ana,Mazarron/Murcia,Spanien; Größe ca. 4 x 2,7 cm

Collection: Haubi
Copyright: Haubi
Contribution: Haubi 2017-09-26
Locality: Mazarrón, Bergbaurevier / Mazarrón / Murcia / Spanien

Collectors Summary

Color farblos, rosa
Streak color weiß
Hardness (Mohs) 1.5
Solubility +++ H2O
Crystal System monoklin, P21/c

Chemism

Chem­ical formula

MnAl2(SO4)4·22H2O

Chem­ical com­po­si­tion

Aluminium, Mangan, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 889.4911343 u; Number of atoms in the formula: 89

Info

Empirical formula:

MnAl2(SO4)4·22H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

4.99

44

49.44

1.0079470

44.3496680

Oxygen

O

68.35

38

42.70

15.9994300

607.9783400

Aluminium

Al

6.07

2

2.25

26.9815382

53.9630764

Sulfur

S

14.42

4

4.49

32.0655000

128.2620000

Manganese

Mn

6.18

1

1.12

54.9380499

54.9380499

Anal­y­sis wt%

MnO : 8.73, Al2O3 : 10.03, SO3 : 35.47, H2O : 44.78 (Ref: Dana, 7th ed. 2)

Strunz 9th edi­tion incl. updates

7.CB.85

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
C: Sulfate (Selenate, etc.) ohne weitere Anionen, mit H2O
B: Mit ausschließlich mittelgroßen Kationen
85:Halotrichit-Gruppe

Lapis Clas­sifica­tion

VI/C.12-030

VI: SULFATE, CHROMATE, MOLYBDATE UND WOLFRAMATE
C: Wasserhaltige Sulfate, ohne fremde Anionen
12: Mittelgroße und sehr große Kationen; Halotrichit-Gruppe

Clas­sifica­tion by Hölzel

7.CD.230

7: SULFATES CHROMATES MOLYBDATES WOLFRAMATES
C: Sulfates (-Anions +Water)
D: Sulfates, C medium + large
2: Halotrichite-Group

Dana 8th edi­tion

29.07.03.03

29: Hydrated Acid and Sulfates
07: Hydrated Acid and Sulfates where A (B)2 (XO4)4 · x(H2O)
03: Halotrichite Group (Monoclinic with 22 H2O)

IMA sta­tus

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

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

farblos, rosa

Streak color

weiß

max. Birefrin­gence

0.004

Birefringence chart\! Apjohnite title=Birefringence chart Apjohnite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

1.478

RI value β

1.482

RI value γ / ε

1.482

Ri mean

1.481

2V angle

Biaxial (-) sm

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/c

Cell param­e­ters a (Å)

6.198

Cell param­e­ters b (Å)

24.347

Cell param­e­ters c (Å)

21.266

Cell param­e­ters a/b or c/a

0.255

Cell param­e­ters c/b

0.873

Cell param­e­ters α

90°

Cell param­e­ters β

100.28

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

3157.583

X-Ray Pow­der Diffrac­tion

6.07(20),
4.82(90),
4.32(30),
4.13(20),
3.967(20),
3.792(30),
3.515(100),
2.689(20)

XRD chart Apjohnite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

1.5

VHN (Hard­ness Vick­ers)

18 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

1.81 (gemessen)

1.871 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ H2O

(Co-)Type locality

(Co-)Type locality

Mosambik/Maputo, Provinz/Bahía de Maputo

Preface

Author (Name, Year)

Glocker, 1847

References

Handbook of Mineralogy (Anthony et al.), 5 (2003), 29

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

Apjohnite

MnAl2(SO4)4·22H2O

monoklin : 2/m : P21/c

7.CB.85

Bílinite

Fe2+Fe23+(SO4)4·22H2O

monoklin : 2/m : P21/c

7.CB.85

Wupatkiite

(Co,Mg)Al2[SO4]4·22H2O

monoklin : 2/m : P21/c

7.CB.85

Dietrichite

(Zn,Fe2+,Mn)Al2(SO4)4·22H2O

monoklin : 2/m : P21/c

7.CB.85

Halotrichite

Fe2+Al2(SO4)4·22H2O

monoklin : 2/m : P21/c

7.CB.85

Pickeringite

MgAl2(SO4)4·22H2O

monoklin : 2/m : P21/c

7.CB.85

'Redingtonite'

(Fe2+,Mg,Ni)(Cr,Al)2(SO4)4·22H2O

7.CB.85

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

Pickeringite

MgAl2(SO4)4·22H2O

monoklin : 2/m : P21/c

VI/C.12-010

Wupatkiite

(Co,Mg)Al2[SO4]4·22H2O

monoklin : 2/m : P21/c

VI/C.12-012

Halotrichite

Fe2+Al2(SO4)4·22H2O

monoklin : 2/m : P21/c

VI/C.12-020

Apjohnite

MnAl2(SO4)4·22H2O

monoklin : 2/m : P21/c

VI/C.12-030

Dietrichite

(Zn,Fe2+,Mn)Al2(SO4)4·22H2O

monoklin : 2/m : P21/c

VI/C.12-040

'Redingtonite'

(Fe2+,Mg,Ni)(Cr,Al)2(SO4)4·22H2O

VI/C.12-050

Bílinite

Fe2+Fe23+(SO4)4·22H2O

monoklin : 2/m : P21/c

VI/C.12-060

'Caichengyunite'

(Fe2+)3Al2(SO4)6·30 H2O

VI/C.12-070

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

Pickeringite

MgAl2(SO4)4·22H2O

monoklin : 2/m : P21/c

7.CD.200

Dietrichite

(Zn,Fe2+,Mn)Al2(SO4)4·22H2O

monoklin : 2/m : P21/c

7.CD.210

Halotrichite

Fe2+Al2(SO4)4·22H2O

monoklin : 2/m : P21/c

7.CD.220

Wupatkiite

(Co,Mg)Al2[SO4]4·22H2O

monoklin : 2/m : P21/c

7.CD.225

Apjohnite

MnAl2(SO4)4·22H2O

monoklin : 2/m : P21/c

7.CD.230

Bílinite

Fe2+Fe23+(SO4)4·22H2O

monoklin : 2/m : P21/c

7.CD.240

'Redingtonite'

(Fe2+,Mg,Ni)(Cr,Al)2(SO4)4·22H2O

7.CD.250

Mendozite

NaAl(SO4)2·11H2O

monoklin : 2/m : C2/c

7.CD.280

Kalinite

KAl(SO4)2·11 H2O

monoklin : 2/m : C2/c

7.CD.285

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Ransomite

CuFe23+(SO4)4·6H2O

monoklin : 2/m : P21/c

29.07.01.01

Römerite

Fe2+Fe23+(SO4)4·14H2O

triklin : 1 : P1

29.07.02.01

Lishizhenite

ZnFe23+(SO4)4·14 H2O

triklin : 1 : P1

29.07.02.02

Pickeringite

MgAl2(SO4)4·22H2O

monoklin : 2/m : P21/c

29.07.03.01

Halotrichite

Fe2+Al2(SO4)4·22H2O

monoklin : 2/m : P21/c

29.07.03.02

Apjohnite

MnAl2(SO4)4·22H2O

monoklin : 2/m : P21/c

29.07.03.03

Dietrichite

(Zn,Fe2+,Mn)Al2(SO4)4·22H2O

monoklin : 2/m : P21/c

29.07.03.04

Bílinite

Fe2+Fe23+(SO4)4·22H2O

monoklin : 2/m : P21/c

29.07.03.05

Wupatkiite

(Co,Mg)Al2[SO4]4·22H2O

monoklin : 2/m : P21/c

29.07.03.07

Other languages

German

Apjohnit

Spanish

Apjohnita

French

Apjohnite

English

Apjohnite

Russian

Апджонит

Alternative Name

German

Manganalaun

Manganese Alum

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

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English pages

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Russian pages

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