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Jarlite

Pictures (2 Images total)

Jarlit
Views (File:
1287251654
): 1328
Jarlit
Bildbreite: 2 mm; Fundort: Kryolithlagerstätte, Ivigtut, Kitaa, Kommuneqarfik Sermersooq, Grönland
Copyright: Luigi Chiappino; Contribution: slugslayer
Location: Grönland/Kommuneqarfik Sermersooq/Ivittuut (Ivigtut)/Kryolithlagerstätte (Cryolite deposit)
Mineral: Jarlite
Image: 1287251654
Rating: 4.5 (votes: 2)
License: Usage for Mineralienatlas project only
Jarlit

Bildbreite: 2 mm; Fundort: Kryolithlagerstätte, Ivigtut, Kitaa, Kommuneqarfik Sermersooq, Grönland

Copyright: Luigi Chiappino
Contribution: slugslayer 2010-10-16
Locality: Kryolithlagerstätte (Cryolite deposit) / Ivittuut (Ivigtut) / Kommuneqarfik Sermersooq / Grönland
Jarlit
Views (File:
1699713375
): 27
Jarlit
Ivigtut Etwa 69 mm x 44 mm große Stufe mit Jarlit aus Ivigtut in Grönland.
Copyright: Klaus Schäfer; Contribution: Klaus Schäfer
Collection: Klaus Schäfer, Collection number: GL-Jarlit-5-1-1
Location: Grönland/Kommuneqarfik Sermersooq/Ivittuut (Ivigtut)/Kryolithlagerstätte (Cryolite deposit)
Mineral: Jarlite
Image: 1699713375
License: Usage for Mineralienatlas project only
Jarlit (SNr: GL-Jarlit-5-1-1)

Ivigtut Etwa 69 mm x 44 mm große Stufe mit Jarlit aus Ivigtut in Grönland.

Collection: Klaus Schäfer
Copyright: Klaus Schäfer
Contribution: Klaus Schäfer 2023-11-11
Locality: Kryolithlagerstätte (Cryolite deposit) / Ivittuut (Ivigtut) / Kommuneqarfik Sermersooq / Grönland

Collectors Summary

Color farblos, grauweiß, weiß
Streak color weiß
Hardness (Mohs) 4.25
Solubility +++ H2SO4, AlCl3, NH4Cl
Crystal System monoklin, C2/m

Chemism

Chemical formula

Na(Sr,Na)7MgAl6F32(OH,H2O)2

Empirical formula (analysis)

NaSr5.7NaCa0.2Li0.2Ba0.1Mg0.5Al6.2F31.8(H2O)2.3

Chemical composition

Aluminium, Magnesium, Natrium, Strontium, Fluor, Sauerstoff, Wasserstoff

Unit weight: 1393.57846579 u; Number of atoms in the formula: 53.6

Info

Empirical formula:

NaSr5.7NaCa0.2Li0.2Ba0.1Mg0.5Al6.2F31.8(H2O)2.3

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.33

4.6

8.58

1.0079470

4.6365562

Lithium

Li

0.10

0.2

0.37

6.9412000

1.3882400

Oxygen

O

2.64

2.3

4.29

15.9994300

36.7986890

Fluorine

F

43.35

31.8

59.33

18.9984033

604.1492234

Sodium

Na

3.30

2

3.73

22.9897702

45.9795404

Magnesium

Mg

0.87

0.5

0.93

24.3050600

12.1525300

Aluminium

Al

12.00

6.2

11.57

26.9815382

167.2855368

Calcium

Ca

0.58

0.2

0.37

40.0784000

8.0156800

Strontium

Sr

35.84

5.7

10.63

87.6210000

499.4397000

Barium

Ba

0.99

0.1

0.19

137.3277000

13.7327700

Strunz 9th edition incl. updates

3.CC.20

3: Halide (Fluoride, Chloride, Bromide, Iodide)
C: Komplexe Halogenide
C: Gruppen-Aluminofluoride (Soro-Aluminofluoride)
20:Jarlit-Gruppe

Lapis Classification

III/B.03-050

III: HALOGENIDE (Fluoride, Chloride, Bromide, Jodide)
B: Doppelhalogenide
3: mit [BF4] 1-, [SiF6] 2- und [AlF6] 3-

Classification by Hölzel

3.DE.100

3: HALIDES
D: Complex Halides
E: Jarlite-Group

Dana 8th edition

11.06.10.01

11: Halide Complexes; Alumino-fluorides
06: Halide Complexes; Alumino-fluorides with miscellaneous formulae
10: Jarlite Group

IMA status

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos, grauweiß, weiß

Streak color

weiß

Diaphaneity (Transparency)

transparent bis durchscheinend

max. Birefringence

0.007

Birefringence chart\! Jarlite title=Birefringence chart Jarlite

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

1.429

RI value β

1.433

RI value γ / ε

1.436

Ri mean

1.433

2V angle

Biaxial (+/-) 82° - 90° (gemessen)

Orientation

Y = b, X ^ c = 6

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell parameters a (Å)

15.942

Cell parameters b (Å)

10.821

Cell parameters c (Å)

7.421

Cell parameters a/b or c/a

1.473

Cell parameters c/b

0.686

Cell parameters α

90°

Cell parameters β

101.87

Cell parameters γ

90°

Z

2

Volume (ų)

1252.81

X-Ray Powder Diffraction

3.63(40),
3.45(40),
3.19(90),
3.11(60),
2.98(100),
2.15(70),
1.996(40),
1.816(60)

XRD chart Jarlite

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)

4.25

VHN (Hardness Vickers)

230 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.87 (gemessen)

3.694 ( ρ calc. Mineralienatlas )

Instability

+++ H2SO4, AlCl3, NH4Cl

Preface

Author (Name, Year)

Bøgvad, 1933

References

Handbook of Mineralogy (Anthony et al.), 3 (1997), 277

Other languages

German

Jarlit

Spanish

Jarlita

French

Jarlite

English

Jarlite

Russian

Ярлит

CNMNC symbol

Symbol

Jar

Locations with GPS information

IDs

GUSID (Global unique identifier short form) HpCisQu_REeIumXvUsUOlw
GUID (Global unique identifier) B1A2901E-BF0B-4744-88BA-65EF52C50E97
Database ID 1775