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Gaylussite (Gaylussit)

Pictures (3 Images total)

Gaylussit
Views (Image: 1247600402): 2441, Rating: 7.75
Gaylussit

FO Kenia, Provinz Rift Valley, Lake Amboseli

Collection: Museum für Naturkunde Berlin
Copyright: Embarak
Contribution: Embarak 2009-07-14
Gaylussit
Views (Image: 1286900000): 1223
Gaylussit

Bildbreite: 5 cm, Fundort: Searles Lake, San Bernardino Co., Kalifornien, USA

Copyright: Maggie Wilson
Contribution: thdun5 2010-10-12
Gaylussit
Views (Image: 1291487283): 1223
Gaylussit

Größe: 12,6 x 7,2 cm; Fundort: Searles Lake, San Bernardino Co., Kalifornien, USA

Collection: Vince Morgan
Copyright: Rock Currier
Contribution: slugslayer 2010-12-04

Collectors Summary

Color farblos, grau, grauweiß, gelb, gelblich weiß
Streak color weiß
Hardness (Mohs) 2.5
Solubility +++ Säuren, + H2O, stabil zwischen 15 und 40°C
Crystal System monoklin, I2/a

Chemism

Chemical formula

Na2Ca(CO3)2·5H2O

Chemical composition

Calcium, Natrium, Kohlenstoff, Sauerstoff, Wasserstoff

Unit weight: 296.1527004 u; Number of atoms in the formula: 26

Info

Empirical formula:

Na2Ca(CO3)2·5H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

3.40

10

38.46

1.0079470

10.0794700

Carbon

C

8.11

2

7.69

12.0107800

24.0215600

Oxygen

O

59.43

11

42.31

15.9994300

175.9937300

Sodium

Na

15.53

2

7.69

22.9897702

45.9795404

Calcium

Ca

13.53

1

3.85

40.0784000

40.0784000

Analysis wt%

Na2O : 20.40, CaO : 19.02, CO2 : 30.02, H2O : 30.47 (Ref: Dana, 7th ed. 2)

Strunz 9th edition incl. updates

5.CB.35

5: Carbonate (Carbonate, Nitrate)
C: Carbonate ohne weitere Anionen, mit H2O
B: Mit großen [Kationen] (Alkali- und Alkali-Erden-Carbonaten)
35:Gaylussit-Gruppe

Lapis Classification

V/D.02-060

V: NITRATE, CARBONATE UND BORATE
D: Wasserhaltige Carbonate, ohne fremde Anionen

Classification by Hölzel

5.CB.310

5: CARBONATES NITRATES ARSENITES SULFITES SELENITES TELLURITES IODATES
C: Carbonates (-Anions +Water)
B: Natron-Pirssonite-Group

Dana 8th edition

15.02.02.01

15: Hydrated Carbonates
02: Hydrated Carbonates where A+m B++n (XO3)p · x(H2O), (m+n):p > 1:1

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos, grau, grauweiß, gelb, gelblich weiß

Streak color

weiß

Diaphaneity (Transparency)

durchscheinend

max. Birefringence

0.077

Birefringence chart\! Gaylussite title=Birefringence chart Gaylussite

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

1.445

RI value β

1.516

RI value γ / ε

1.522

Ri mean

1.494

2V angle

Biaxial (-) 34°

Optical Data Luminescence

Luminescence

keine Fluoreszenz bekannt

Color LW-UV (365nm)

 

gelblich weiß

Color SW-UV (254nm)

 

gelblich weiß

MW-UV (320nm)

 

rosa

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

15

Space Group

I2/a

Cell parameters a (Å)

14.35

Cell parameters b (Å)

7.78

Cell parameters c (Å)

11.21

Cell parameters a/b or c/a

1.844

Cell parameters c/b

1.441

Cell parameters α

90°

Cell parameters β

127.85

Cell parameters γ

90°

Z

4

Volumne (ų)

988.223

X-Ray Powder Diffraction

6.407(60),
4.505(20),
4.426(10),
3.205(100),
2.726(50),
2.696(10),
2.635(50),
2.510(30)

XRD chart Gaylussite

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)

2.5

VHN (Hardness Vickers)

68 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

1.93 - 1.99 / Durchschnittlich = 1.96

1.99 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren, + H2O, stabil zwischen 15 und 40°C

(Co-)Type locality

(Co-)Type locality

Venezuela/Mérida/Lagunilla

Author (Name, Year)

Boussingault, 1826

References

Handbook of Mineralogy (Anthony et al.), 5 (2003), 241

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

Gaylussite

Na2Ca(CO3)2·5H2O

monoklin : 2/m : I2/a

5.CB.35

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

Thermonatrite

Na2CO3·H2O

orthorhombisch : mm2 : Pca21

V/D.02-010

Natron

Na2CO3·10 H2O

monoklin : m : Cc

V/D.02-020

Trona

Na3(CO3)(HCO3)·2H2O

monoklin : 2/m : C2/c

V/D.02-030

Baylissite

K2Mg(CO3)2·4H2O

monoklin : 2/m : P21/n

V/D.02-040

Pirssonite

Na2Ca(CO3)2·2H2O

orthorhombisch : mm2 : Fdd2

V/D.02-050

Gaylussite

Na2Ca(CO3)2·5H2O

monoklin : 2/m : I2/a

V/D.02-060

Chalconatronite

Na2Cu(CO3)2·3H2O

monoklin : 2/m : P21/n

V/D.02-070

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

Pirssonite

Na2Ca(CO3)2·2H2O

orthorhombisch : mm2 : Fdd2

5.CB.300

Gaylussite

Na2Ca(CO3)2·5H2O

monoklin : 2/m : I2/a

5.CB.310

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

Pirssonite

Na2Ca(CO3)2·2H2O

orthorhombisch : mm2 : Fdd2

15.02.01.01

Gaylussite

Na2Ca(CO3)2·5H2O

monoklin : 2/m : I2/a

15.02.02.01

Chalconatronite

Na2Cu(CO3)2·3H2O

monoklin : 2/m : P21/n

15.02.03.01

Baylissite

K2Mg(CO3)2·4H2O

monoklin : 2/m : P21/n

15.02.04.01

Andersonite

Na2Ca(UO2)(CO3)3·6H2O

trigonal : 3m : R3m

15.02.05.01

Grimselite

K3Na(UO2)(CO3)3·H2O

hexagonal : 6m2 : P62c

15.02.06.01

Other languages

German

Gaylussit

Spanish

Gaylussita

English

Gaylussite

French

Gaylussite

Russian

Гейлюссит

Alternative Name

Gay-Lussite

German

Gaylussacit

Spanish

Gaylussacita

Gaylussacite

Latin

Natrium-calciumcarbonat-Pentahydrat

German

Natrocalcit

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

German pages

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Russian pages

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