'._('einklappen').'
 

Alum-(Na)

Collectors Summary

Color farblos, weiß
Lustre Glasglanz
Hardness (Mohs) 3
Solubility +++ H2O
Crystal System kubisch, Pa3

Chemism

Chem­ical formula

NaAl(SO4)2·12H2O

Chem­ical com­po­si­tion

Aluminium, Natrium, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 458.2816364 u; Number of atoms in the formula: 48

Info

Empirical formula:

NaAl(SO4)2·12H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

5.28

24

50.00

1.0079470

24.1907280

Oxygen

O

69.82

20

41.67

15.9994300

319.9886000

Sodium

Na

5.02

1

2.08

22.9897702

22.9897702

Aluminium

Al

5.89

1

2.08

26.9815382

26.9815382

Sulfur

S

13.99

2

4.17

32.0655000

64.1310000

Anal­y­sis wt%

Na2O : 6.76, Al2O3 : 11.13, SO3 : 34.94, H2O : 47.17 (Ref: berechnet)

Strunz 9th edi­tion incl. updates

7.CC.20

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

Lapis Clas­sifica­tion

VI/C.14-010

VI: SULFATE, CHROMATE, MOLYBDATE UND WOLFRAMATE
C: Wasserhaltige Sulfate, ohne fremde Anionen
14: Mittelgroße und sehr große Kationen

Clas­sifica­tion by Hölzel

7.CD.100

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

Dana 8th edi­tion

29.05.05.02

29: Hydrated Acid and Sulfates
05: Hydrated Acid and Sulfates where A B (XO4)2 · x(H2O)
05: Alum Group

IMA sta­tus

Erstbeschreibung vor IMA-Gründung 1959, vererbt, meist von der CNMNC als Mineral anerkannt

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

farblos, weiß

Lus­tre

Glasglanz

RI value α / ω / n

1.439

Ri mean

1.439

2V angle

Isotropisch

Crystallography

Crystal Sys­tem

kubisch

Class (H-M)

m3

Space Group number

205

Space Group

Pa3

Cell param­e­ters a (Å)

12.214

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

-

Cell param­e­ters a/b or c/a

1

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

1822.106

X-Ray Pow­der Diffrac­tion

7.051(10),
4.314(100),
3.526(10),
3.263(10),
2.962(30),
2.493(10),
1.908(10),
1.632(10)

XRD chart Alum-(Na)

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

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

3

VHN (Hard­ness Vick­ers)

83 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

1.67

1.67 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ H2O

References

Acta Crystallographica 22 (1967), 182.

USA National Bureau of Standards Monograph 25, 15 (1978), 68

Handbook of Mineralogy (Anthony u.w.), 5 (2003), 653.

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

Alum-(K)

KAl(SO4)2·12H2O

kubisch : m3 : Pa3

7.CC.20

Lonecreekite

(NH4)(Fe3+,Al)(SO4)2·12H2O

kubisch : m3 : Pa3

7.CC.20

Tschermigite

(NH4)Al(SO4)2·12H2O

kubisch : m3 : Pa3

7.CC.20

Lanmuchangite

TlAl[SO4]2·12H2O

kubisch : m3 : Pa3

7.CC.20

Alum-(Na)

NaAl(SO4)2·12H2O

kubisch : m3 : Pa3

7.CC.20

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

Alum-(Na)

NaAl(SO4)2·12H2O

kubisch : m3 : Pa3

VI/C.14-010

Alum-(K)

KAl(SO4)2·12H2O

kubisch : m3 : Pa3

VI/C.14-020

Tschermigite

(NH4)Al(SO4)2·12H2O

kubisch : m3 : Pa3

VI/C.14-030

Lonecreekite

(NH4)(Fe3+,Al)(SO4)2·12H2O

kubisch : m3 : Pa3

VI/C.14-040

Lanmuchangite

TlAl[SO4]2·12H2O

kubisch : m3 : Pa3

VI/C.14-045

Pertlikite

K2(Fe2+,Mg)2(Mg,Fe3+)4Fe3+2Al(SO4)12·18H2O

tetragonal : 4mm : I41cd

VI/C.14-048

Voltaite

K2Fe2+5Fe3+3Al(SO4)12·18H2O

kubisch : m3m : Fd3c

VI/C.14-050

Zincovoltaite

K2(Zn,Fe2+,Mn)5Fe33+Al(SO4)12·18H2O

kubisch : m3m : Fd3c

VI/C.14-060

Ammoniomagnesiovoltaite

(NH4)2Mg5Fe3+3Al(SO4)12·18H2O

kubisch : m3m : Fd3c

VI/C.14-070

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

Alum-(Na)

NaAl(SO4)2·12H2O

kubisch : m3 : Pa3

7.CD.100

Alum-(K)

KAl(SO4)2·12H2O

kubisch : m3 : Pa3

7.CD.110

Tschermigite

(NH4)Al(SO4)2·12H2O

kubisch : m3 : Pa3

7.CD.120

Lanmuchangite

TlAl[SO4]2·12H2O

kubisch : m3 : Pa3

7.CD.130

Lonecreekite

(NH4)(Fe3+,Al)(SO4)2·12H2O

kubisch : m3 : Pa3

7.CD.150

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

Krausite

KFe3+(SO4)2·H2O

monoklin : 2/m : P21/m

29.05.01.01

Goldichite

KFe3+(SO4)2·4H2O

monoklin : 2/m : P21/c

29.05.02.01

Tamarugite

NaAl(SO4)2·6H2O

monoklin : 2/m : P21/a

29.05.03.01

Amarillite

NaFe3+(SO4)2·6H2O

monoklin : 2/m : C2/c

29.05.03.02

Mendozite

NaAl(SO4)2·11H2O

monoklin : 2/m : C2/c

29.05.04.01

Alum-(K)

KAl(SO4)2·12H2O

kubisch : m3 : Pa3

29.05.05.01

Alum-(Na)

NaAl(SO4)2·12H2O

kubisch : m3 : Pa3

29.05.05.02

Tschermigite

(NH4)Al(SO4)2·12H2O

kubisch : m3 : Pa3

29.05.05.03

Lonecreekite

(NH4)(Fe3+,Al)(SO4)2·12H2O

kubisch : m3 : Pa3

29.05.05.04

Lanmuchangite

TlAl[SO4]2·12H2O

kubisch : m3 : Pa3

29.05.05.05

Other languages

German

Alaun-(Na)

English

Alum-(Na)

Russian

сцы-(Na)

Alternative Name

French

Alun de sodium

Na Alum

German

Natron-Alaun

Sodalumit

Spanish

Sodalumita

Sodalumite

Spanish

Sodioalumbre

English

Sodium Alum

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

German pages

DeWikiPedia - search for: Alaun-(Na)
Google-Bilder-Suche - search for: Alaun-(Na)
Mineralogisch-Petrographisches-Institut Hamburg - search for: Alaun-(Na)

English pages

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

Russian pages

Webmineral.ru - search for: сцы-(Na)

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Alaun-(Na)
Crystal-Treasure.com - search for: Alaun-(Na)
Bosse - search for: Alaun-(Na)

Locations with GPS information