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Jørgensenite

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Jørgensenite
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Jørgensenite
kammartiges Aggregat von beigem Jørgensenite, Ivigtut, Grönland; BB < 1 mm. analysiert
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: Grönland/Kommuneqarfik Sermersooq/Ivittuut (Ivigtut)
Mineral: Jørgensenite
Image: 1579428814
License: Usage for Mineralienatlas project only
Jørgensenite

kammartiges Aggregat von beigem Jørgensenite, Ivigtut, Grönland; BB < 1 mm. analysiert
Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-01-19
Locality: Ivittuut (Ivigtut) / Kommuneqarfik Sermersooq / Grönland

Collectors Summary

Hardness (Mohs) 3.75
Cleavages keine
Fracture uneben
Crystal System monoklin, C2/m

Chemism

Chemical formula

Na2Sr14Na2Al12F64(OH)4

Chemical composition

Aluminium, Natrium, Strontium, Fluor, Sauerstoff, Wasserstoff

Unit weight: 2926.3588552 u; Number of atoms in the formula: 102

Info

Empirical formula:

Na2Sr14Na2Al12F64(OH)4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.14

4

3.92

1.0079470

4.0317880
Oxygen

O

2.19

4

3.92

15.9994300

63.9977200
Fluorine

F

41.55

64

62.75

18.9984033

1,215.8978080
Sodium

Na

3.14

4

3.92

22.9897702

91.9590808
Aluminium

Al

11.06

12

11.76

26.9815382

323.7784584
Strontium

Sr

41.92

14

13.73

87.6210000

1,226.6940000

Analysis wt%

Al2O3 : 20.73, MgO : 0.63, SrO : 38.74, BaO : 9.64, Na2O : 4.38, F : 42.50, H2O : 1.22 (Ref: Canadian Mineralogist 97)

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.03-048

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

Classification by Hölzel

3.DE.120

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

Dana 8th edition

11.06.10.03

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

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

max. Birefringence

0.006
Birefringence chart\! Jørgensenite title=Birefringence chart Jørgensenite

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

1.436

RI value β

1.442

RI value γ / ε

1.442

Ri mean

1.440

2V angle

Biaxial (-) 3°

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell parameters a (Å)

16.046

Cell parameters b (Å)

10.971

Cell parameters c (Å)

7.281

Cell parameters a/b or c/a

1.463

Cell parameters c/b

0.664

Cell parameters α

90°

Cell parameters β

101.73

Cell parameters γ

90°

Z

1

Volume (ų)

1254.985

X-Ray Powder Diffraction

7.84(80),
3.643(90),
3.453(100),
3.193(100),
3.112(90),
2.989(90),
2.220(80),
2.173(90)
XRD chart Jørgensenite

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)

3.75

VHN (Hardness Vickers)

160 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.89 (gemessen)

3.872 ( ρ calc. Mineralienatlas )

Cleavages

keine

Fracture

uneben

Tenacity

spröde

(Co-)Type locality

(Co-)Type locality

Grönland/Kommuneqarfik Sermersooq/Ivittuut (Ivigtut)/Kryolithlagerstätte (Cryolite deposit)

Preface

Author (Name, Year)

Pauly & Hawthorne & Burns & Della Ventura, 1997

References

Canadian Mineralogist 35 (1997), 175

Other languages

German

Jørgensenit

Spanish

Jørgensenita

English

Jørgensenite

French

Jørgensenite

Russian

Йоргенсенит

old name

German

Jörgensenit

frühere Schreibweise

Alternative Name

Jorgensenite

CNMNC (IMA)-Number

IMA 1995-046

CNMNC symbol

Symbol

Jør

IDs

GUSID (Global unique identifier short form) IlXKDD8Bx0WD-ms7xILD0Q
GUID (Global unique identifier) 0CCA5522-013F-45C7-83FA-6B3BC482C3D1
Database ID 1754