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Changoite

Pictures (2 Images total)

Changoit
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Changoit

Deblin-Mine Namibia; Foto: Mineralientage München 2012;

Collection: giantcrystal
Copyright: Stefan
Contribution: Stefan 2012-10-29
Locality: Namib Lead Mine (Deblin Mine) / Rössingberge / Arandis / Swakopmund, Kreis / Erongo, Region / Namibia
Changoit
Views (Image: 1351538213): 707
Changoit

Namib Lead Mine, Namibia; Mineralientage München 2012, Braith-Stones

Collection: anatasi
Copyright: Stefan
Contribution: Stefan 2012-10-29
Locality: Namib Lead Mine (Deblin Mine) / Rössingberge / Arandis / Swakopmund, Kreis / Erongo, Region / Namibia

Collectors Summary

Color farblos
Streak color weiß
Hardness (Mohs) 2.50 - 3.00
Solubility +++ H2O
Crystal System monoklin, P21/a

Chemism

Chem­ical formula

Na2Zn[SO4]2·4H2O

Chem­ical com­po­si­tion

Natrium, Zink, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 375.5766764 u; Number of atoms in the formula: 25

Info

Empirical formula:

Na2Zn[SO4]2·4H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

2.15

8

32.00

1.0079470

8.0635760

Oxygen

O

51.12

12

48.00

15.9994300

191.9931600

Sodium

Na

12.24

2

8.00

22.9897702

45.9795404

Sulfur

S

17.08

2

8.00

32.0655000

64.1310000

Zinc

Zn

17.42

1

4.00

65.4094000

65.4094000

Anal­y­sis wt%

Na2O : 16.51, ZnO : 21.67, SO3 : 42.64, H2O : 19.19 (Ref: berechnet)

Strunz 9th edi­tion incl. updates

7.CC.50

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

Lapis Clas­sifica­tion

VI/C.18-025

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

Clas­sifica­tion by Hölzel

7.CD.730

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

Dana 8th edi­tion

29.03.03.05

29: Hydrated Acid and Sulfates
03: Hydrated Acid and Sulfates where (A+)2 B (XO4)2 · x(H2O)
03: Blodite Group

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

farblos

Streak color

weiß

max. Birefrin­gence

0.009

Birefringence chart\! Changoite title=Birefringence chart Changoite

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

1.507

RI value β

1.512

RI value γ / ε

1.516

Ri mean

1.512

2V angle

Biaxial (-) 85°

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/a

Cell param­e­ters a (Å)

11.077

Cell param­e­ters b (Å)

8.249

Cell param­e­ters c (Å)

5.532

Cell param­e­ters a/b or c/a

1.343

Cell param­e­ters c/b

0.671

Cell param­e­ters α

90°

Cell param­e­ters β

100.18

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

497.524

X-Ray Pow­der Diffrac­tion

4.550(60),
4.245(30),
3.325(20),
3.289(100),
3.262(30),
3.245(20),
2.695(20),
2.631(30)

XRD chart Changoite

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)

2.50 - 3.00

VHN (Hard­ness Vick­ers)

68 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.5 (gemessen) 2.51 (berechnet)

2.507 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ H2O

(Co-)Type locality

(Co-)Type locality

Chile/Antofagasta, Region (II. Region)/Tocopilla, Provinz/Sierra Gorda District

Type mate­r­ial

Mineralogisches Museum der Universität Hamburg

Col­lec­tion number of type mate­r­ial

MMHH C1/97 / Tresor des Museums

Par­a­ge­n­e­sis of type mate­r­ial

Thenardit, Gips

Preface

Author (Name, Year)

Schlüter & Klaska & Gebhard, 1999

References

Neues Jahrbuch für Mineralogie, Monatshefte (1999), 97

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

Blödite

Na2Mg(SO4)2·4H2O

monoklin : 2/m : P21/a

7.CC.50

Changoite

Na2Zn[SO4]2·4H2O

monoklin : 2/m : P21/a

7.CC.50

Nickelblödite

Na2(Ni,Mg)(SO4)2·4H2O

monoklin : 2/m : P21/a

7.CC.50

Cobaltoblödite

Na2Co(SO4)2·4H2O

monoklin : 2/m : P21/a

7.CC.50

Manganoblödite

Na2Mn(SO4)2·4H2O

monoklin : 2/m : P21/a

7.CC.50

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

Blödite

Na2Mg(SO4)2·4H2O

monoklin : 2/m : P21/a

VI/C.18-010

Nickelblödite

Na2(Ni,Mg)(SO4)2·4H2O

monoklin : 2/m : P21/a

VI/C.18-020

Changoite

Na2Zn[SO4]2·4H2O

monoklin : 2/m : P21/a

VI/C.18-025

Leonite

K2Mg(SO4)2·4H2O

monoklin : 2/m : C2/m

VI/C.18-030

Mereiterite

K2Fe2+[SO4]2·4H2O

monoklin : 2/m : C2/m

VI/C.18-035

Konyaite

Na2Mg(SO4)2·5H2O

monoklin : 2/m : P21/c

VI/C.18-040

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

Kröhnkite

Na2Cu(SO4)2· 2H2O

monoklin : 2/m : P21/c

7.CD.700

Ferrinatrite

Na3Fe(SO4)3·3H2O

trigonal : 3 : P3

7.CD.720

Changoite

Na2Zn[SO4]2·4H2O

monoklin : 2/m : P21/a

7.CD.730

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

Syngenite

K2Ca(SO4)2·H2O

monoklin : 2/m : P21/m

29.03.01.01

Koktaite

(NH4)2Ca(SO4)2·H2O

monoklin : 2/m : P21/m

29.03.01.02

Kröhnkite

Na2Cu(SO4)2· 2H2O

monoklin : 2/m : P21/c

29.03.02.01

Blödite

Na2Mg(SO4)2·4H2O

monoklin : 2/m : P21/a

29.03.03.01

Nickelblödite

Na2(Ni,Mg)(SO4)2·4H2O

monoklin : 2/m : P21/a

29.03.03.02

Leonite

K2Mg(SO4)2·4H2O

monoklin : 2/m : C2/m

29.03.03.03

Mereiterite

K2Fe2+[SO4]2·4H2O

monoklin : 2/m : C2/m

29.03.03.04

Changoite

Na2Zn[SO4]2·4H2O

monoklin : 2/m : P21/a

29.03.03.05

Konyaite

Na2Mg(SO4)2·5H2O

monoklin : 2/m : P21/c

29.03.05.01

Picromerite

K2Mg(SO4)2·6H2O

monoklin : 2/m : P21/a

29.03.06.01

Cyanochroite

K2Cu(SO4)·6H2O

monoklin : 2/m : P21/c

29.03.06.02

Mohrite

(NH4)2Fe2+(SO4)2·6H2O

monoklin : 2/m : P21/a

29.03.07.01

Boussingaultite

(NH4)2Mg(SO4)2·6H2O

monoklin : 2/m : P21/a

29.03.07.02

'Nickelboussingaultite'

(NH4)2(Ni,Mg)(SO4)2·6H2O

29.03.07.03

Mosesite

Hg2N(Cl,SO4,MoO4,CO3)·H2O

kubisch : 43m : F43m

29.03.08.01

Other languages

German

Changoit

French

Changoite

English

Changoite

Spanish

Changoíta

Russian

Чангоит

Alternative Name

Zincblödite

IMA Number

IMA 1997-041

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

German pages

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

English pages

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

Webmineral.ru - search for: Чангоит

Mineral Dealer

German pages

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Crystal-Treasure.com - search for: Changoit
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