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Ammonioalunite

Pictures (2 Images total)

AMMONIOALUNIT mit ged. Schwefel
Views (Image: 1349735804): 1200
AMMONIOALUNIT mit ged. Schwefel (SNr: 00704.)

Absetzerhalde des SDAG Wismut Bergbau Revier Ronneburg, Thüringen, (D) BB.: ca. 10mm; (Ex-Slg.: F.Rüger)

Collection: Daniel Neumann
Copyright: Daniel Neumann
Contribution: Neumann 2012-10-09
Locality: Absetzerhalde / Ronneburg / Greiz, Landkreis / Thüringen / Deutschland
blumenkohlartiger Apjohnit mit Pickeringit
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blumenkohlartiger Apjohnit mit Pickeringit (SNr: A013453)

Tschechien/Mittelböhmen, Region (Stredocesky kraj)/Kladno, Bezirk/Libusin/Kladno Mine (Schöller Mine; Nejedlý I Mine; Zdenek Nejedlý Mine; Schoeller Mine), BB = 1,8 mm

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2020-08-26
Locality: Kladno Mine (Schöller Mine; Nejedlý I Mine; Zdenek Nejedlý Mine; Schoeller Mine) / Libusin / Kladno, Bezirk / Mittelböhmen, Region (Stredocesky kraj) / Tschechien

Collectors Summary

Color weiß
Streak color weiß
Hardness (Mohs) 3.50 - 4.00
Solubility +++ KOH, ++ kalte verdünnte H2SO4, + kalte verdünnte HCl
Crystal System trigonal, R3m, R3m

Chemism

Chem­ical formula

NH4Al3(SO4)2(OH)6

Chem­ical com­po­si­tion

Aluminium, Sauerstoff, Schwefel, Stickstoff, Wasserstoff

Unit weight: 393.1538246 u; Number of atoms in the formula: 30

Info

Empirical formula:

NH4Al3(SO4)2(OH)6

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

2.56

10

33.33

1.0079470

10.0794700

Nitrogen

N

3.56

1

3.33

14.0067200

14.0067200

Oxygen

O

56.97

14

46.67

15.9994300

223.9920200

Aluminium

Al

20.59

3

10.00

26.9815382

80.9446146

Sulfur

S

16.31

2

6.67

32.0655000

64.1310000

Strunz 9th edi­tion incl. updates

7.BC.10

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
B: Sulfate (Selenate, etc.) mit weitere Anionen, ohne H2O
C: Mit mittelgroßen und großen [Kationen]
10:Alunit-Gruppe

Lapis Clas­sifica­tion

VI/B.11-030

VI: SULFATE, CHROMATE, MOLYBDATE UND WOLFRAMATE
B: Wasserfreie Sulfate, mit fremden Anionen
11: Große Kationen vor-wiegend; Alunit-Gruppe

Clas­sifica­tion by Hölzel

7.BB.200

7: SULFATES CHROMATES MOLYBDATES WOLFRAMATES
B: Sulfates (+Anions -Water)
B: Alunite-Group (sulfatian)
2: Alunites with NH4+, H+, H3O+

Dana 8th edi­tion

30.02.04.06

30: Anhydrous Sulfates Containing Hydroxyl or Halogen
02: Anhydrous Sulfates Containing Hydroxyl or Halogen where (A B)2 XO4 Zq
04: Alunite Group (Alunite Subgroup)

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Alunite supergroup  ⇒ Alunite group with -1c

Optical Properties

Color

weiß

Streak color

weiß

max. Birefrin­gence

0.012

Birefringence chart\! Ammonioalunite title=Birefringence chart Ammonioalunite

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

1.590

RI value γ / ε

1.602

Ri mean

1.594

2V angle

Uniaxial (+)

Crystallography

Crystal Sys­tem

trigonal

Class (H-M)

3m, 3m

Space Group number

160, 166

Space Group

R3m, R3m

Cell param­e­ters a (Å)

7.013

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

17.885

Cell param­e­ters a/b or c/a

2.550

Cell param­e­ters c/b

-

Z

3

Volumne (ų)

761.776

X-Ray Pow­der Diffrac­tion

5.04(90),
3.514(20),
3.023(100),
2.996(50),
2.353(30),
1.917(30),
1.753(20),
1.540(20)

XRD chart Ammonioalunite

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

Crystals 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

3.50 - 4.00

VHN (Hard­ness Vick­ers)

53 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.4 (gemessen) 2.58 (berechnet)

2.571 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ KOH, ++ kalte verdünnte H2SO4, + kalte verdünnte HCl

(Co-)Type locality

(Co-)Type locality

USA/Kalifornien (California)/Sonoma Co./The Geysers

Preface

Author (Name, Year)

Altaner & Fitzpatrick & Krohn & Bethke & Hayba & Goss & Brown, 1988

References

American Mineralogist 73 (1988), 145

IMA group assignments

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

Alunite

KAl3(SO4)2(OH)6

trigonal : 3m : R3m

7.BC.10

Huangite

Ca0.5Al3[(OH)6|(SO4)2]

trigonal : 3m : R3m

7.BC.10

Jarosite

KFe3+3(SO4)2(OH)6

trigonal : 3m : R3m

7.BC.10

Walthierite

Ba0.5Al3(SO4)2(OH)6

trigonal : 3m : R3m

7.BC.10

Natroalunite-1c

Na2Al3(SO4)2(OH)6

trigonal : 3m : R3m

7.BC.10

Osarizawaite

Pb(Al2Cu2+)(SO4)2(OH)6

trigonal : 3m : R3m

7.BC.10

Dorallcharite

(Tl,K)Fe3+3[(OH)6|(SO4)2]

trigonal : 3m : R3m

7.BC.10

Natrojarosite

NaFe3+3(SO4)2(OH)6

trigonal : 3m : R3m

7.BC.10

Ammonioalunite

NH4Al3(SO4)2(OH)6

trigonal : 3m, 3m : R3m, R3m

7.BC.10

Beaverite-(Cu)

Pb(Fe3+2Cu)(SO4)2(OH)6

trigonal : 3m : R3m

7.BC.10

Plumbojarosite

PbFe63+(SO4)4(OH)12

trigonal : 3m : R3m

7.BC.10

Ammoniojarosite

NH4Fe3+3(SO4)2(OH)6

trigonal : 3m : R3m

7.BC.10

Argentojarosite

AgFe3+3(SO4)2(OH)6

trigonal : 3m : R3m

7.BC.10

Beaverite-(Zn)

Pb(Fe3+2Zn)(SO4)2(OH)6

trigonal : 3m : R3m

7.BC.10

Natroalunite-2c

NaAl3(SO4)2(OH)6

trigonal : 3m : R3m

7.BC.10

Schlossmacherite

(H3O,Ca)Al3(AsO4,SO4)2(OH)6

trigonal : 3m : R3m

7.BC.10

Hydronium jarosite

(H3O)Fe3+3(SO4)2(OH)6

trigonal : 3m : R3m

7.BC.10

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

Natroalunite-1c

Na2Al3(SO4)2(OH)6

trigonal : 3m : R3m

VI/B.11-010

Alunite

KAl3(SO4)2(OH)6

trigonal : 3m : R3m

VI/B.11-020

Ammonioalunite

NH4Al3(SO4)2(OH)6

trigonal : 3m, 3m : R3m, R3m

VI/B.11-030

Huangite

Ca0.5Al3[(OH)6|(SO4)2]

trigonal : 3m : R3m

VI/B.11-043

Walthierite

Ba0.5Al3(SO4)2(OH)6

trigonal : 3m : R3m

VI/B.11-045

Natrojarosite

NaFe3+3(SO4)2(OH)6

trigonal : 3m : R3m

VI/B.11-050

Jarosite

KFe3+3(SO4)2(OH)6

trigonal : 3m : R3m

VI/B.11-060

Dorallcharite

(Tl,K)Fe3+3[(OH)6|(SO4)2]

trigonal : 3m : R3m

VI/B.11-065

Ammoniojarosite

NH4Fe3+3(SO4)2(OH)6

trigonal : 3m : R3m

VI/B.11-070

Hydronium jarosite

(H3O)Fe3+3(SO4)2(OH)6

trigonal : 3m : R3m

VI/B.11-080

Argentojarosite

AgFe3+3(SO4)2(OH)6

trigonal : 3m : R3m

VI/B.11-090

Plumbojarosite

PbFe63+(SO4)4(OH)12

trigonal : 3m : R3m

VI/B.11-100

Osarizawaite

Pb(Al2Cu2+)(SO4)2(OH)6

trigonal : 3m : R3m

VI/B.11-110

Beaverite-(Zn)

Pb(Fe3+2Zn)(SO4)2(OH)6

trigonal : 3m : R3m

VI/B.11-115

Beaverite-(Cu)

Pb(Fe3+2Cu)(SO4)2(OH)6

trigonal : 3m : R3m

VI/B.11-120

Krivovichevite

Pb3[Al(OH)6](SO4)(OH)

trigonal : 3m : R3c

VI/B.11-130

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

Ammonioalunite

NH4Al3(SO4)2(OH)6

trigonal : 3m, 3m : R3m, R3m

7.BB.200

Ammoniojarosite

NH4Fe3+3(SO4)2(OH)6

trigonal : 3m : R3m

7.BB.220

Hydronium jarosite

(H3O)Fe3+3(SO4)2(OH)6

trigonal : 3m : R3m

7.BB.230

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

Lanarkite

Pb2(SO4)O

monoklin : 2/m : C2/m

30.02.01.01

Dolerophanite

Cu2(SO4)O

monoklin : 2/m : C2/m

30.02.02.01

Linarite

PbCu(SO4)(OH)2

monoklin : 2/m : P21/m

30.02.03.01

Alunite

KAl3(SO4)2(OH)6

trigonal : 3m : R3m

30.02.04.01

Natroalunite-1c

Na2Al3(SO4)2(OH)6

trigonal : 3m : R3m

30.02.04.02

Schlossmacherite

(H3O,Ca)Al3(AsO4,SO4)2(OH)6

trigonal : 3m : R3m

30.02.04.03

Osarizawaite

Pb(Al2Cu2+)(SO4)2(OH)6

trigonal : 3m : R3m

30.02.04.04

Natroalunite-2c

NaAl3(SO4)2(OH)6

trigonal : 3m : R3m

30.02.04.05

Ammonioalunite

NH4Al3(SO4)2(OH)6

trigonal : 3m, 3m : R3m, R3m

30.02.04.06

Walthierite

Ba0.5Al3(SO4)2(OH)6

trigonal : 3m : R3m

30.02.04.07

Huangite

Ca0.5Al3[(OH)6|(SO4)2]

trigonal : 3m : R3m

30.02.04.08

Jarosite

KFe3+3(SO4)2(OH)6

trigonal : 3m : R3m

30.02.05.01

Natrojarosite

NaFe3+3(SO4)2(OH)6

trigonal : 3m : R3m

30.02.05.02

Hydronium jarosite

(H3O)Fe3+3(SO4)2(OH)6

trigonal : 3m : R3m

30.02.05.03

Ammoniojarosite

NH4Fe3+3(SO4)2(OH)6

trigonal : 3m : R3m

30.02.05.04

Argentojarosite

AgFe3+3(SO4)2(OH)6

trigonal : 3m : R3m

30.02.05.05

Plumbojarosite

PbFe63+(SO4)4(OH)12

trigonal : 3m : R3m

30.02.05.06

Beaverite-(Cu)

Pb(Fe3+2Cu)(SO4)2(OH)6

trigonal : 3m : R3m

30.02.05.07

Dorallcharite

(Tl,K)Fe3+3[(OH)6|(SO4)2]

trigonal : 3m : R3m

30.02.05.08

Itoite

Pb3GeO2(SO4)2(OH)2

orthorhombisch : mmm : Pnma

30.02.06.01

Piypite

K4Cu4O2(SO4)4·(Na,Cu)Cl

tetragonal : 4 : I4

30.02.07.01

Kamchatkite

KCu32+OCl(SO4)2

orthorhombisch : mm2 : Pna21

30.02.08.01

Cannonite

Bi2O(SO4)(OH)2

monoklin : 2/m : P21/c

30.02.09.01

Other languages

German

Ammonioalunit

French

Ammonioalunite

English

Ammonioalunite

Spanish

Amonioalunita

Russian

Аммониоалунит

Alternative Name

Spanish

Ammonioalunita

IMA Number

IMA 1986-037

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German pages

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