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Konyaite

Collectors Summary

Color farblos, weiß
Streak color weiß
Hardness (Mohs) 2.5
Solubility +++ H2O, instabil, wandelt sich in wenigen Tagen zu Blödit um
Crystal System monoklin, P21/c

Chemism

Chem­ical formula

Na2Mg(SO4)2·5H2O

Chem­ical com­po­si­tion

Magnesium, Natrium, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 352.4876604 u; Number of atoms in the formula: 28

Info

Empirical formula:

Na2Mg(SO4)2·5H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

2.86

10

35.71

1.0079470

10.0794700

Oxygen

O

59.01

13

46.43

15.9994300

207.9925900

Sodium

Na

13.04

2

7.14

22.9897702

45.9795404

Magnesium

Mg

6.90

1

3.57

24.3050600

24.3050600

Sulfur

S

18.19

2

7.14

32.0655000

64.1310000

Anal­y­sis wt%

Na2O : 17.58, MgO : 11.44, SO3 : 45.43, H2O : 25.56 (Ref: berechnet)

Strunz 9th edi­tion incl. updates

7.CC.60

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

Lapis Clas­sifica­tion

VI/C.18-040

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

Clas­sifica­tion by Hölzel

7.CD.400

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

Dana 8th edi­tion

29.03.05.01

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

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

farblos, weiß

Streak color

weiß

max. Birefrin­gence

0.010

Birefringence chart\! Konyaite title=Birefringence chart Konyaite

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

1.464

RI value β

1.468

RI value γ / ε

1.474

Ri mean

1.469

2V angle

Biaxial (-) 74°

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/c

Cell param­e­ters a (Å)

5.784

Cell param­e­ters b (Å)

24.026

Cell param­e­ters c (Å)

8.066

Cell param­e­ters a/b or c/a

0.241

Cell param­e­ters c/b

0.336

Cell param­e­ters α

90°

Cell param­e­ters β

95.37

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

1115.983

Kristall struc­ture

aufgeklärt, siehe S. J. Mills, S. A. Wilson, G. M. Dipple, M. Raudsepp: The decomposition of konyaite: importance in CO2 fixation in mine tailings. Mineral. Mag. 74 (2010) S. 903-917.

X-Ray Pow­der Diffrac­tion

12.01(40),
4.541(100),
4.202(40),
4.017(40),
3.960(40),
2.659(40),
2.639(40),
2.597(40)

XRD chart Konyaite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

2.5

VHN (Hard­ness Vick­ers)

53 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.088

2.098 ( ρ calc. Mineralienatlas )

Radioac­tiv­ity

keine

Insta­bil­ity

+++ H2O, instabil, wandelt sich in wenigen Tagen zu Blödit um

Preface

Author (Name, Year)

Van Doesburg & Vergouwen & van der Plas, 1982

Addi­tional Informa­tion

Konyait zersetzt sich mit der Zeit, nach 22 Monaten wurde ein Gemenge von anderen Sulfaten und amorphen Verbindungen festgestellt; siehe S. J. Mills, S. A. Wilson, G. M. Dipple, M. Raudsepp: The decomposition of konyaite: importance in CO2 fixation in mine tailings. Mineral. Mag. 74 (2010) S. 903-917.

References

American Mineralogist 67 (1982), 1035

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

Mohrite

(NH4)2Fe2+(SO4)2·6H2O

monoklin : 2/m : P21/a

7.CC.60

Konyaite

Na2Mg(SO4)2·5H2O

monoklin : 2/m : P21/c

7.CC.60

Picromerite

K2Mg(SO4)2·6H2O

monoklin : 2/m : P21/a

7.CC.60

Cyanochroite

K2Cu(SO4)·6H2O

monoklin : 2/m : P21/c

7.CC.60

Boussingaultite

(NH4)2Mg(SO4)2·6H2O

monoklin : 2/m : P21/a

7.CC.60

Katerinopoulosite

(NH4)2Zn(SO4)2·6H2O

monoklin : 2/m : P21/a

7.CC.60

Nickelpicromerite

K2Ni(SO4)2·6H2O

monoklin : 2/m : P21/c

7.CC.60

'Nickelboussingaultite'

(NH4)2(Ni,Mg)(SO4)2·6H2O

7.CC.60

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]

Konyaite

Na2Mg(SO4)2·5H2O

monoklin : 2/m : P21/c

7.CD.400

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

Konyait

French

Konyaite

English

Konyaite

Spanish

Konyaíta

Russian

Коньяит

Alternative Name

English

Protoastrakhanite

IMA Number

IMA 1981-003

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

German pages

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

English pages

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

Russian pages

Webmineral.ru - search for: Коньяит

Mineral Dealer

German pages

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

Locations with GPS information