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Tilleyite (Tly)

Pictures (2 Images total)

Tilleyit
Views (File:
1222503112
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Tilleyit
Größe: 65 x 22 mm; Fundort: Crestmore Quarries, Crestmore, Riverside Co., Kalifornien, USA
Copyright: John Sobolewski; Contribution: slugslayer
Location: USA/Kalifornien (California)/Riverside Co./Crestmore/Crestmore Quarries
Mineral: Tilleyite
Image: 1222503112
Rating: 8 (votes: 1)
License: Usage for Mineralienatlas project only
Tilleyit

Größe: 65 x 22 mm; Fundort: Crestmore Quarries, Crestmore, Riverside Co., Kalifornien, USA
Copyright: John Sobolewski
Contribution: slugslayer 2008-09-27
Locality: Crestmore Quarries / Crestmore / Riverside Co. / Kalifornien (California) / USA
Tilleyit
Views (File:
1277152112
): 917
Tilleyit
Größe: 43x40 mm; Fundort: Crestmore Quarries, Crestmore, Riverside Co., Kalifornien, USA
Copyright: John Sobolewski; Contribution: slugslayer
Location: USA/Kalifornien (California)/Riverside Co./Crestmore/Crestmore Quarries
Mineral: Tilleyite
Image: 1277152112
License: Usage for Mineralienatlas project only
Tilleyit

Größe: 43x40 mm; Fundort: Crestmore Quarries, Crestmore, Riverside Co., Kalifornien, USA
Copyright: John Sobolewski
Contribution: slugslayer 2010-06-21
Locality: Crestmore Quarries / Crestmore / Riverside Co. / Kalifornien (California) / USA

You find additional specimen at the Geolitho Museum

Collectors Summary

Color farblos, weiß
Streak color weiß
Cleavages deutlich (010)
Fracture uneben
Solubility +++ verdünnte HCl
Crystal System monoklin, P21/a

Chemism

Chemical formula

Ca5Si2O7(CO3)2

Chemical composition

Calcium, Silicium, Kohlenstoff, Sauerstoff

Unit weight: 488.57721 u; Number of atoms in the formula: 22

Info

Empirical formula:

Ca5Si2O7(CO3)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Carbon

C

4.92

2

9.09

12.0107800

24.0215600
Oxygen

O

42.57

13

59.09

15.9994300

207.9925900
Silicon

Si

11.50

2

9.09

28.0855300

56.1710600
Calcium

Ca

41.02

5

22.73

40.0784000

200.3920000

Analysis wt%

SiO2 : 24.09, Al2O3 : 0.61, MgO : 0.43, CaO : 57.75, H2O : 1.09, CO2 : 15.82 (Ref: American Mineralogist 33)

Strunz 9th edition incl. updates

9.BE.82

9: Silikate (Germanate)
B: Gruppensilikate (Sorosilikate)
E: Si2O7 Gruppen mit zusätzlichen Anionen; Kationen in oktahedraler [6] und größerer Koordination
82:Tilleyit-Gruppe

Lapis Classification

VIII/C.09-020

VIII: SILIKATE
C: Gruppensilikate
9: Gruppensilikate [Si2O7] 6-, mit tetraederfremden Anionen (O,OH,F)

Classification by Hölzel

9.BE.110

9: SILICATES
B: Sorosilicates
E: Cuspidine-Tilleyite-Group

Dana 8th edition

56.02.09.01

56: Sorosilicates Sorosilicate Si2O7 Groups and O, OH, F. and H2O
02: Sorosilicates Sorosilicate Si2O7 Groups and O, OH, F. and H2O with cations in [4] and/or >[4] coordination
09: Tilleyite - Killalaite group

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos, weiß

Streak color

weiß

max. Birefringence

0.041
Birefringence chart\! Tilleyite title=Birefringence chart Tilleyite

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

1.612

RI value β

1.632

RI value γ / ε

1.653

Ri mean

1.632

2V angle

Biaxial (+) 87°~

Optical Data Luminescence

Color LW-UV (365nm)

  

gelblich weiß

Color SW-UV (254nm)

  

gelblich weiß

SW-UV Other Colors

  

blau

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/a

Cell parameters a (Å)

15.111

Cell parameters b (Å)

10.242

Cell parameters c (Å)

7.577

Cell parameters a/b or c/a

1.475

Cell parameters c/b

0.740

Cell parameters α

90°

Cell parameters β

105.15

Cell parameters γ

90°

Z

4

Volume (ų)

1131.912

X-Ray Powder Diffraction

3.335(20),
3.190(30),
3.099(60),
3.011(100),
2.982(40),
2.803(40),
2.100(40),
1.896(40)
XRD chart Tilleyite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

2.84 (gemessen)

2.867 ( ρ calc. Mineralienatlas )

Cleavages

deutlich (010)

Fracture

uneben

Instability

+++ verdünnte HCl

(Co-)Type locality

(Co-)Type locality

USA/Kalifornien (California)/Riverside Co./Crestmore/Crestmore Quarries

Preface

Name from

Cecil Edgar Tilley (1894–1973), australisch-britischer Petrologe und Geologe

Author (Name, Year)

Larsen & Dunham, 1933

References

Canadian Mineralogist 43 (2005), 1489

Other languages

German

Tilleyit

Spanish

Tilleyita

French

Tilleyite

English

Tilleyite

Russian

Тиллеит

CNMNC symbol

Symbol

Tly

Locations with GPS information

IDs

GUSID (Global unique identifier short form) GiLmzyVtlE-s1KxD6RhEGQ
GUID (Global unique identifier) CFE6221A-6D25-4F94-ACD4-AC43E9184419
Database ID 3845