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Kogarkoite

Collectors Summary

Color farblos, weiß, hellblau
Streak color weiß
Hardness (Mohs) 3.5
Solubility +++ H2O
Crystal System monoklin, P21/m

Chemism

Chemical formula

Na3(SO4)F

Chemical composition

Natrium, Fluor, Sauerstoff, Schwefel

Unit weight: 184.03093385 u; Number of atoms in the formula: 9

Info

Empirical formula:

Na3(SO4)F

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

34.78

4

44.44

15.9994300

63.9977200

Fluorine

F

10.32

1

11.11

18.9984033

18.9984033

Sodium

Na

37.48

3

33.33

22.9897702

68.9693106

Sulfur

S

17.42

1

11.11

32.0655000

32.0655000

Analysis wt%

Na2O : 50.52, SO3 : 43.50, F : 10.32 (Ref: berechnet)

Strunz 9th edition incl. updates

7.BD.15

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
B: Sulfate (Selenate, etc.) mit weitere Anionen, ohne H2O
D: Mit ausschließlich großen [Kationen]
15:Kogarkoit-Gruppe

Lapis Classification

VI/B.12-040

VI: SULFATE, CHROMATE, MOLYBDATE UND WOLFRAMATE
B: Wasserfreie Sulfate, mit fremden Anionen
12: Große Kationen vor-wiegend

Classification by Hölzel

7.BD.100

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

Dana 8th edition

30.01.06.01

30: Anhydrous Sulfates Containing Hydroxyl or Halogen
01: Anhydrous Sulfates Containing Hydroxyl or Halogen where (A B)m (XO4)p Zq where m:p>2:1

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos, weiß, hellblau

Streak color

weiß

max. Birefringence

0.017

Birefringence chart\! Kogarkoite title=Birefringence chart Kogarkoite

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

1.422

RI value β

1.439

RI value γ / ε

1.439

Ri mean

1.433

2V angle

Uniaxial (+) !

Optical Data Luminescence

Luminescence

fluoreszierend

Color LW-UV (365nm)

 

bläulich weiß

Color SW-UV (254nm)

 

bläulich weiß

Color SW-UV Afterglow (254nm)

 

grün

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

11

Space Group

P21/m

Cell parameters a (Å)

18.073

Cell parameters b (Å)

6.949

Cell parameters c (Å)

11.440

Cell parameters a/b or c/a

2.601

Cell parameters c/b

1.646

Cell parameters α

90°

Cell parameters β

107.72

Cell parameters γ

90°

Z

12

Volumne (ų)

1368.576

X-Ray Powder Diffraction

3.80(70),
3.48(100),
2.991(80),
2.718(80),
2.705(80),
2.564(70),
2.431(30),
2.142(80)

XRD chart Kogarkoite

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)

3.5

VHN (Hardness Vickers)

130 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.676 - 2.679 / Durchschnittlich = 2.67

2.679 ( ρ calc. Mineralienatlas )

Instability

+++ H2O

Preface

Author (Name, Year)

Pabst & Sharp, 1973

References

American Mineralogist 58 (1973), 116

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

Kogarkoite

Na3(SO4)F

monoklin : 2/m : P21/m

7.BD.15

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

Sulphohalite

Na6(SO4)2FCl

kubisch : m3m : Fm3m

VI/B.12-010

Galeite

Na15(SO4)5F4Cl

trigonal : 3m : P31m

VI/B.12-020

Schairerite

Na21(SO4)7F6Cl

trigonal : 3m : P31m

VI/B.12-030

Kogarkoite

Na3(SO4)F

monoklin : 2/m : P21/m

VI/B.12-040

Krasheninnikovite

KNa2CaMg(SO4)3F

hexagonal : 6/mmm : P63/mcm

VI/B.12-045

Cesanite

Na7Ca3(SO4)6(OH)·H2O

hexagonal : 3m : P6

VI/B.12-050

Caracolite

Na3(Pb2Na)(SO4)3Cl

monoklin : 2/m : P21/m

VI/B.12-060

Aiolosite

Na4Bi(SO4)3Cl

hexagonal : 6/m : P63/m

VI/B.12-070

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

Kogarkoite

Na3(SO4)F

monoklin : 2/m : P21/m

7.BD.100

Schairerite

Na21(SO4)7F6Cl

trigonal : 3m : P31m

7.BD.110

Galeite

Na15(SO4)5F4Cl

trigonal : 3m : P31m

7.BD.120

Sulphohalite

Na6(SO4)2FCl

kubisch : m3m : Fm3m

7.BD.130

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

Sundiusite

Pb10(SO4)Cl2O8

30.01.01.01

Elyite

CuPb4O2SO4(OH)4·H2O

monoklin : 2/m : P21/c

30.01.02.01

Brochantite

Cu4(SO4)(OH)6

monoklin : 2/m : P21/a

30.01.03.01

Klebelsbergite

Sb43+O4(OH)2(SO4)

orthorhombisch : mm2 : Pca21

30.01.05.01

Kogarkoite

Na3(SO4)F

monoklin : 2/m : P21/m

30.01.06.01

Sulphohalite

Na6(SO4)2FCl

kubisch : m3m : Fm3m

30.01.07.01

Galeite

Na15(SO4)5F4Cl

trigonal : 3m : P31m

30.01.08.01

Schairerite

Na21(SO4)7F6Cl

trigonal : 3m : P31m

30.01.09.01

Other languages

German

Kogarkoit

French

Kogarkoite

English

Kogarkoite

Spanish

Kogarkoíta

Russian

Когаркоит

IMA Number

IMA 1970-038

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

German pages

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

English pages

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

Russian pages

Webmineral.ru - search for: Когаркоит

Mineral Dealer

German pages

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

Locations with GPS information




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