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Celsian

Pictures (2 Images total)

Celsian
Views (File:
1105088039
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Celsian
idiomorphe Kristalle; Historische Kleinstufe 3,2 x 3,5 cm; Fundort: Aberfeldy, Perthshire, Grampian Mts., Schottland
Copyright: Collector; Contribution: Mineralienatlas
Collection: Collector
Location: UK/Schottland/Perth and Kinross/Aberfeldy
Mineral: Celsian
Image: 1105088039
Rating: 7 (votes: 1)
License: Usage for Mineralienatlas project only
Celsian

idiomorphe Kristalle; Historische Kleinstufe 3,2 x 3,5 cm; Fundort: Aberfeldy, Perthshire, Grampian Mts., Schottland

Collection: Collector
Copyright: Collector
Contribution: Mineralienatlas 2005-01-07
Locality: Aberfeldy / Perth and Kinross / Schottland / UK
Celsian
Views (File:
1197012046
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Celsian
Celsian (braun) mit Calcit und Willemit; Franklin, Sussex County, New Jersey, USA; Größe; 12 x 8 cm
Copyright: John Veevaert; Contribution: Collector
Location: USA/New Jersey/Sussex Co./Franklin Mining District/Franklin
Mineral: Celsian
Image: 1197012046
Rating: 6 (votes: 1)
License: Usage for Mineralienatlas project only
Celsian

Celsian (braun) mit Calcit und Willemit; Franklin, Sussex County, New Jersey, USA; Größe; 12 x 8 cm

Copyright: John Veevaert
Contribution: Collector 2007-12-07
Locality: Franklin / Franklin Mining District / Sussex Co. / New Jersey / USA

Collectors Summary

Color farblos, gelb, weiß
Streak color weiß
Hardness (Mohs) 6.25
Solubility +++ HCl, HF
Crystal System monoklin, I2/c

Additional information / Summary

Siehe auch unser umfangreiches Feldspat Portrait

Chemism

Chemical formula

BaAl2Si2O8

Chemical composition

Aluminium, Barium, Silicium, Sauerstoff

Unit weight: 375.4572764 u; Number of atoms in the formula: 13

Info

Empirical formula:

BaAl2Si2O8

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

34.09

8

61.54

15.9994300

127.9954400

Aluminium

Al

14.37

2

15.38

26.9815382

53.9630764

Silicon

Si

14.96

2

15.38

28.0855300

56.1710600

Barium

Ba

36.58

1

7.69

137.3277000

137.3277000

Analysis wt%

SiO2 : 31.90, Al2O3 : 26.81, BaO : 39.71, H2O : 1.67 (Ref: Hintze, Handbuch der Mineralogie, 1904-1974)

Strunz 9th edition incl. updates

9.FA.30

9: Silikate (Germanate)
F: Gerüstsilikate (Tektosilikate) ohne zeolithisches H2O
A: Gerüstsilikate (Tektosilicates) ohne weitere [Anionen]
30:Feldspat: Alkali

Lapis Classification

VIII/J.06-060

VIII: SILIKATE
J: Gerüstsilikate (mit Zeolithen)
6: Ohne tetraederfremde Anionen; Feldspat-Gruppe

Classification by Hölzel

9.FC.180

9: SILICATES
F: Tektosilicates
C: Feldspar-Group

Dana 8th edition

76.01.01.04

76: Tektosilicates Tectosilicate Al-Si Framework
01: Tektosilicates Tectosilicate Al-Si Framework with Al-Si frameworks
01: K (Na,Ba) feldspars

IMA status

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

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Feldspar group  ⇒ Alkali feldspar

Optical Properties

Color

farblos, gelb, weiß

Streak color

weiß

Diaphaneity (Transparency)

transparent

max. Birefringence

0.011

Birefringence chart\! Celsian title=Birefringence chart Celsian

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

1.583

RI value β

1.588

RI value γ / ε

1.594

Ri mean

1.588

2V angle

Biaxial (+) 88°

Optical Data Luminescence

Color LW-UV (365nm)

 

blau

LW-UV Intensity

mittel

MW-UV (320nm)

 

blau

MW-UV Intensity

mittel

Color SW-UV (254nm)

 

blau

SW-UV Intensity

mittel

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

15

Space Group

I2/c

Cell parameters a (Å)

8.589

Cell parameters b (Å)

13.008

Cell parameters c (Å)

14.349

Cell parameters a/b or c/a

0.660

Cell parameters c/b

1.103

Cell parameters α

90°

Cell parameters β

114.55

Cell parameters γ

90°

Z

8

Volumne (ų)

1458.226

X-Ray Powder Diffraction

6.523(40),
4.610(30),
3.553(40),
3.472(80),
3.349(100),
3.021(60),
2.774(40),
2.584(40)

XRD chart Celsian

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)

6.25

VHN (Hardness Vickers)

850 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.1 - 3.4 / Durchschnittlich = 3.25

3.42 ( ρ calc. Mineralienatlas )

Instability

+++ HCl, HF

Preface

Associations

Paracelsian, Banalsit, Hyalophan, Sanbornit, Bannisterit, Cymrit, Pennantit u.a.

Rareness

Selten

Author (Name, Year)

Sjögren, 1895

Collector information

Die besten bisher gefunden Kristalle stammen aus der Bennalt Mine, Rhow, Lleyn Peninsula in Wales und aus Aberfeldy in Schottland. (Beste Funde um 1930)

Additional Information

Feldspat-Gruppe (Buddingtonit-Orthoklas-Slawsonit-Serie)

References

Rock-forming Minerals (Deer, Howie & Zussmann), 2nd ed., 4A (2001)

IMA group assignments


 
 
 
 
 

 
 
 
(Na,K)AlSi3O8
triklin
C1

 
 
 
(NH4)AlSi3O8·0.5 H2O
monoklin
P21, P21/m

 
 
 
BaAl2Si2O8
monoklin
I2/c

 
 
 
(K,Ba)Al(Si,Al)3O8
monoklin
C2/m

 
 
 
KAlSi3O8
triklin
C1

 
 
 
KAlSi3O8
monoklin
C2/m

 
 
 
(Rb,K)[AlSi3O8]
triklin
P1

 
 
 
(K,Na)(Si,Al)4O8
monoklin
C2/m

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Actuality: 30. Jan 2023 - 01:25:27

Other languages

Dutch

Celsiaan

German

Celsian

English

Celsian

French

Celsian

Spanish

Celsiana

Russian

Цельзиан

Traditional Chinese

鋇長石

Simplified Chinese

钡长石

Alternative Name

Barium-Anorthite

Barium-Anorthite (of Sjgren)

Barium-Anorthite (of Sjögren)

Germanate-celsian

English

Kasoite

CNMNC symbol

Symbol

Cls

Locations with GPS information