'._('einklappen').'
 

Pickeringite (Pickeringit)

Pictures (19 Images total)

Pickeringit
Views (Image: 1319794061): 1981
Pickeringit

Größe: 2 mm; Fundort: Faraglione Ranni, Porto Levante, Vulcano Insel, Äolische (Liparische) Inseln (Isole Eolie; Isole Lipari), Sizilien (Sicilia), Region / Messina, Provinz, Italien

Copyright: Enrico Bonacina
Contribution: Hg 2011-10-28
Locality: Faraglione Ranni / Porto Levante / Vulcano, Insel / Äolische (Liparische) Inseln (Isole Eolie; Isole Lipari) / Messina, Provinz / Sizilien (Sicilia), Region / Italien
Pickeringit
Views (Image: 1426797246): 2505
Pickeringit

Baia Sprie, Maramures, Rumänien, 55 x 45 x 30 mm

Collection: Embarak
Copyright: Embarak
Contribution: Embarak 2015-03-19
Locality: Baia Sprie (Felsöbánya) / Maramures, Kreis / Rumänien
Pickeringit
Views (Image: 1555089105): 317
Pickeringit (SNr: A041818)  E
Analysed with energy dispersive X-ray spectroscopy EDX

faserige bis gelbliche Kristalle, Bb = 3 mm, Fundort: Stbr. Scharnagel, Muglhof, Weiden, Oberpfalz, Bayern, Deutschland. Modified by CombineZP

Collection: Lithothek der Münchener Micromounter
Copyright: Manfred Früchtl
Contribution: Manfred Früchtl 2019-04-12
Locality: Steinbruch Scharnagl / Ödenthal (Oedenthal) / Muglhof / Weiden in der Oberpfalz, kreisfreie Stadt / Oberpfalz, Bezirk / Bayern / Deutschland
Pickeringit-Halotrichit-Melanterit
Views (Image: 1189878619): 2629, Rating: 7
Pickeringit-Halotrichit-Melanterit

Fundort: Algares Mine, Aljustrel, Beja Region, Portugal; Bildbreite: 10 mm

Copyright: Frank de Wit
Contribution: Klinoklas 2007-09-15
Locality: Algares Mine / Aljustrel Mine / Aljustrel / Beja, Distrikt / Portugal
Pickeringit
Views (Image: 1288309548): 1500
Pickeringit

Faseriger Pickeringit aus der Mina El Arteal, Andalusien, Spanien; Stufengröße ca. 3,5 cm;

Copyright: Stefan
Contribution: Stefan 2010-10-29
Locality: Túnel del Arteal (El Arteal, Socavón Santa Bárbara) / Las Herrerías / Cuevas de Almanzora / Almería, Provinz / Andalusien (Andalucía) / Spanien
Pickeringit
Views (Image: 1225463646): 2137
Pickeringit (SNr: A012587)

Fo.: Intschi Alaungrube, Intschi, Amsteg-Reusstal, Uri, Schweiz, faserige, weiße XX, BB 6,6mm

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2008-10-31
Locality: Intschi Alaungrube / Intschi / Gurtnellen / Uri, Kanton / Schweiz

Collectors Summary

Color farblos, gelblich weiß, rötlichweiß, grünlichweiß
Streak color weiß
Hardness (Mohs) 1.5
Solubility +++ H2O, Aufbewahren in einem versiegelten Behälter
Crystal System monoklin, P21/c

Chemism

Chem­ical formula

MgAl2(SO4)4·22H2O

Chem­ical com­po­si­tion

Aluminium, Magnesium, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 858.8581444 u; Number of atoms in the formula: 89

Info

Empirical formula:

MgAl2(SO4)4·22H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

5.16

44

49.44

1.0079470

44.3496680

Oxygen

O

70.79

38

42.70

15.9994300

607.9783400

Magnesium

Mg

2.83

1

1.12

24.3050600

24.3050600

Aluminium

Al

6.28

2

2.25

26.9815382

53.9630764

Sulfur

S

14.93

4

4.49

32.0655000

128.2620000

Anal­y­sis wt%

MgO : 4.16, MnO : 1.02, Al2O3 : 11.64, SO3 : 36.86, H2O : 46.10 (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.12-010

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.200

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

Dana 8th edi­tion

29.07.03.01

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, gelblich weiß, rötlichweiß, grünlichweiß

Streak color

weiß

Diaphane­ity (Trans­parency)

transparent bis durchscheinend

max. Birefrin­gence

0.008

Birefringence chart\! Pickeringite title=Birefringence chart Pickeringite

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

1.475

RI value β

1.480

RI value γ / ε

1.483

Ri mean

1.479

2V angle

Biaxial (-) 60°

Optical Data Luminescence

Color LW-UV (365nm)

 

gelblich weiß

Color SW-UV (254nm)

 

gelblich weiß

After­glow (Per­sistant Lumi­nes­cence)

keine Daten

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/c

Cell param­e­ters a (Å)

6.184

Cell param­e­ters b (Å)

24.272

Cell param­e­ters c (Å)

21.227

Cell param­e­ters a/b or c/a

0.255

Cell param­e­ters c/b

0.875

Cell param­e­ters α

90°

Cell param­e­ters β

100.33

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

3134.488

X-Ray Pow­der Diffrac­tion

9.604(30),
4.945(20),
4.794(100),
4.304(30),
4.115(20),
3.954(20),
3.777(20),
3.497(60)

XRD chart Pickeringite

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

Crystals 3D

Open larger view

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)

1.8 - 1.85 / Durchschnittlich = 1.82

1.82 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ H2O, Aufbewahren in einem versiegelten Behälter

Chem­ical Prop­er­ties and Tests

Alaungeschmack, sauer

Preface

Author (Name, Year)

Hayes, 1844

Addi­tional Informa­tion

Entdeckungsjahr: 1844

References

European Journal of Mineralogy 12 (2000), 1131

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

Varieties

Kasparite

Cobalt-haltiger Pickeringit

Manganoan Pickeringite

Mn steht möglicherweise für (Mg, Fe) oder ein Teilserie Richtung Apjohnit

Other languages

German

Pickeringit

Spanish

Pickeringita

French

Pickeringite

English

Pickeringite

Russian

Пиккерингит

Traditional Chinese

鎂明礬

Simplified Chinese

镁明矾

Alternative Name

German

Dumreicherit

Magnesia Alum

German

Magnesia-Alaun

Magnesium-Halotrichite

Picralluminite

Italian

Picroallumogene

Pikroalumogen

German

Seelandit

Spanish

Seelandita

German

Sesqui-Magnesia-alaun

Sonomaite

German

Talkerde-Alaun

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

German pages

DeWikiPedia - search for: Pickeringit
Google-Bilder-Suche - search for: Pickeringit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Pickeringit

English pages

Mindat - search for: Pickeringite
Webmineral - search for:Pickeringite
Handbook-of-Mineralogy - search for: Pickeringite
RRUFF - Raman, XRD and other mineral data - search for: Pickeringite
RRUFF - References and PDF downloads - search for: Pickeringite
American-Mineralogist-Crystal-Structure-Database - search for: Pickeringite
Athena - search for: Pickeringite

Russian pages

Webmineral.ru - search for: Пиккерингит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Pickeringit
Crystal-Treasure.com - search for: Pickeringit
Bosse - search for: Pickeringit

Locations with GPS information