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Gearksutite (Gearksutit)

Pictures (18 Images total)

Gearksutit
Views (File:
1289513656
): 1397
Gearksutit
Größe: 2,06 mm; Fundort: Monte Trisa, Val Mercanti, Torrebelvicino, Vicenza, Venetien (Veneto), Italien
Copyright: Matteo Chinellato; Contribution: Hg
Collection: Domenico Preite
Location: Italien/Venetien (Veneto), Region/Vicenza, Provinz/Torrebelvicino/Val Mercanti/Monte Trisa
Mineral: Gearksutite
Image: 1289513656
Rating: 7 (votes: 1)
License: Usage for Mineralienatlas project only
Gearksutit

Größe: 2,06 mm; Fundort: Monte Trisa, Val Mercanti, Torrebelvicino, Vicenza, Venetien (Veneto), Italien
Collection: Domenico Preite
Copyright: Matteo Chinellato
Contribution: Hg 2010-11-11
Locality: Monte Trisa / Val Mercanti / Torrebelvicino / Vicenza, Provinz / Venetien (Veneto), Region / Italien
Gearksutit
Views (File:
1511548031
): 467
Gearksutit
Weißer Gearksutit auf Aegirin von Gjerdingen, Nordmarka, Norwegen. Bildhöhe etwa 3,5 mm. Ex.coll Gunnar Raade.
Copyright: Klaus Schäfer; Contribution: Klaus Schäfer
Collection: Klaus Schäfer, Collection number: Gj-Gear-1-1-1
Location: Norwegen/Viken, Provinz/Lunner/Nordmarka/Gjerdingen
Mineral: Gearksutite
Image: 1511548031
Rating: 7 (votes: 1)
License: Usage for Mineralienatlas project only
Gearksutit (SNr: Gj-Gear-1-1-1)

Weißer Gearksutit auf Aegirin von Gjerdingen, Nordmarka, Norwegen. Bildhöhe etwa 3,5 mm. Ex.coll Gunnar Raade.
Collection: Klaus Schäfer
Copyright: Klaus Schäfer
Contribution: Klaus Schäfer 2017-11-24
Locality: Gjerdingen / Nordmarka / Lunner / Viken, Provinz / Norwegen
Gearksutit mit Linarit
Views (File:
1224348820
): 1080
Gearksutit mit Linarit
Größe: 2 mm; Fundort: Monte Trisa, Val Mercanti, Torrebelvicino, Vicenza, Venetien (Veneto), Italien
Copyright: Matteo Chinellato; Contribution: Hg
Location: Italien/Venetien (Veneto), Region/Vicenza, Provinz/Torrebelvicino/Val Mercanti/Monte Trisa
Mineral: Gearksutite
Image: 1224348820
Rating: 6 (votes: 1)
License: Usage for Mineralienatlas project only
Gearksutit mit Linarit

Größe: 2 mm; Fundort: Monte Trisa, Val Mercanti, Torrebelvicino, Vicenza, Venetien (Veneto), Italien
Copyright: Matteo Chinellato
Contribution: Hg 2008-10-18
Locality: Monte Trisa / Val Mercanti / Torrebelvicino / Vicenza, Provinz / Venetien (Veneto), Region / Italien
Gearksutit
Views (File:
1179601083
): 1971
Gearksutit
Bilbreite: 2 mm; Fundort: Grube Clara, Wolfach, Schwarzwald
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Deutschland/Baden-Württemberg/Freiburg, Bezirk/Ortenaukreis/Oberwolfach/Grube Clara
Mineral: Gearksutite
Image: 1179601083
License: Usage for Mineralienatlas project only
Gearksutit

Bilbreite: 2 mm; Fundort: Grube Clara, Wolfach, Schwarzwald
Copyright: Stephan Wolfsried
Contribution: Hg 2007-05-19
Locality: Grube Clara / Oberwolfach / Ortenaukreis / Freiburg, Bezirk / Baden-Württemberg / Deutschland
Gearksutit
Views (File:
1210797917
): 1455
Gearksutit
Größe: 90x55x40 mm; Fundort: Ost-Kounrad Mo-W-Lagerstätte, Balqash, Qaraghandy Oblysy, Kasachstan
Copyright: Pavel M. Kartashov; Contribution: slugslayer
Location: Kasachstan/Qaraghandy oblysy (Karaganda)/Balqash/Kounradmassiv/Ost-Kounrad Mo-W-Lagerstätte
Mineral: Gearksutite
Image: 1210797917
License: Usage for Mineralienatlas project only
Gearksutit

Größe: 90x55x40 mm; Fundort: Ost-Kounrad Mo-W-Lagerstätte, Balqash, Qaraghandy Oblysy, Kasachstan
Copyright: Pavel M. Kartashov
Contribution: slugslayer 2008-05-14
Locality: Ost-Kounrad Mo-W-Lagerstätte / Kounradmassiv / Balqash / Qaraghandy oblysy (Karaganda) / Kasachstan
Gearksutit
Views (File:
1213856862
): 1256
Gearksutit
Bildbreite: 1,5 mm; Fundort: Grube Clara, Wolfach, Schwarzwald, Deutschland
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Deutschland/Baden-Württemberg/Freiburg, Bezirk/Ortenaukreis/Oberwolfach/Grube Clara
Mineral: Gearksutite
Image: 1213856862
License: Usage for Mineralienatlas project only
Gearksutit

Bildbreite: 1,5 mm; Fundort: Grube Clara, Wolfach, Schwarzwald, Deutschland
Copyright: Stephan Wolfsried
Contribution: Hg 2008-06-19
Locality: Grube Clara / Oberwolfach / Ortenaukreis / Freiburg, Bezirk / Baden-Württemberg / Deutschland

You find additional Gearksutit specimen at the Geolitho Museum

Collectors Summary

Color weiß
Streak color weiß
Hardness (Mohs) 2
Solubility +++ Säuren
Crystal System triklin, P1

Chemism

Chemical formula

CaAl(OH)F4·H2O

Chemical composition

Aluminium, Calcium, Fluor, Sauerstoff, Wasserstoff

Unit weight: 178.0762522 u; Number of atoms in the formula: 11

Info

Empirical formula:

CaAl(OH)F4·H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

1.70

3

27.27

1.0079470

3.0238410
Oxygen

O

17.97

2

18.18

15.9994300

31.9988600
Fluorine

F

42.67

4

36.36

18.9984033

75.9936130
Aluminium

Al

15.15

1

9.09

26.9815382

26.9815382
Calcium

Ca

22.51

1

9.09

40.0784000

40.0784000

Strunz 9th edition incl. updates

3.CC.05

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

Lapis Classification

III/C.01-010

III: HALOGENIDE (Fluoride, Chloride, Bromide, Jodide)
C: Doppelhalogenide (meist mit OH,H2O)
1: Fluoride

Classification by Hölzel

3.DG.100

3: HALIDES
D: Complex Halides
G: Acuminite-Group

Dana 8th edition

11.06.08.01

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

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

weiß

Streak color

weiß

Diaphaneity (Transparency)

transparent bis teilweise durchscheinend

max. Birefringence

0.008
Birefringence chart\! Gearksutite title=Birefringence chart Gearksutite

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

1.448

RI value β

1.454

RI value γ / ε

1.456

Ri mean

1.453

2V angle

Biaxial (-) 65°

Optical Data Luminescence

Color LW-UV (365nm)

  

gelblich weiß

Color SW-UV (254nm)

  

rot

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

triklin

Class (H-M)

1

Space Group number

2

Space Group

P1

Cell parameters a (Å)

4.940

Cell parameters b (Å)

6.810

Cell parameters c (Å)

6.978

Cell parameters a/b or c/a

0.725

Cell parameters c/b

1.025

Cell parameters α

101.12

Cell parameters β

94.87

Cell parameters γ

110.7

Z

2

Volumne (ų)

212.455

X-Ray Powder Diffraction

4.567(100),
3.376(40),
3.313(30),
3.167(70),
2.288(40),
2.160(40),
1.930(50),
1.903(40)
XRD chart Gearksutite

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

VHN (Hardness Vickers)

32 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.75

2.784 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren

(Co-)Type locality

(Co-)Type locality

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

Preface

Author (Name, Year)

Dana, 1868

References

Handbook of Mineralogy (Anthony et al.), 3 (1997), 218

Other languages

German

Gearksutit

Spanish

Gearksutita

English

Gearksutite

French

Gearksutite

Russian

Геарксутит

Traditional Chinese

氟鋁鈣礦

Simplified Chinese

氟铝钙矿

Alternative Name

Evigtokite

Gearksite

CNMNC symbol

Symbol

Gak

Locations with GPS information