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Leifite

Pictures (11 Images total)

Leifit
Views (File:
1165498794
): 1451
Leifit
Bildbreite: 8 mm; Fundort Mont Saint-Hilaire, Quebéc, Kanada
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Kanada/Québec, Provinz/Montérégie, Region/La Vallée-du-Richelieu RCM/Mont Saint-Hilaire/Poudrette Quarry (Demix Quarry; Uni-Mix Quarry; Desourdy Quarry)
Mineral: Leifite
Image: 1165498794
Rating: 9 (votes: 2)
License: Usage for Mineralienatlas project only
Leifit

Bildbreite: 8 mm; Fundort Mont Saint-Hilaire, Quebéc, Kanada

Copyright: Stephan Wolfsried
Contribution: Hg 2006-12-07
Locality: Poudrette Quarry (Demix Quarry; Uni-Mix Quarry; Desourdy Quarry) / Mont Saint-Hilaire / La Vallée-du-Richelieu RCM / Montérégie, Region / Québec, Provinz / Kanada
Leifit
Views (File:
1295886258
): 1047
Leifit
Größe: 2,9 x 1 x 0,8 cm, Fundort: Mont Saint-Hilaire, Rouville Co., Québec, Kanada
Copyright: Michael Roarke; Contribution: thdun5
Location: Kanada/Québec, Provinz/Montérégie, Region/La Vallée-du-Richelieu RCM/Mont Saint-Hilaire
Mineral: Leifite
Image: 1295886258
Rating: 6 (votes: 2)
License: Usage for Mineralienatlas project only
Leifit

Größe: 2,9 x 1 x 0,8 cm, Fundort: Mont Saint-Hilaire, Rouville Co., Québec, Kanada

Copyright: Michael Roarke
Contribution: thdun5 2011-01-24
Locality: Mont Saint-Hilaire / La Vallée-du-Richelieu RCM / Montérégie, Region / Québec, Provinz / Kanada
Leifit
Views (File:
1108575902
): 1190
Leifit
Größe: 2.5 x 2.2 x 1.5 cm; Fundort: Mt St Hilaire, Quebec, Kanada
Copyright: Rob Lavinsky; Contribution: Mineralienatlas
Location: Kanada/Québec, Provinz/Montérégie, Region/La Vallée-du-Richelieu RCM/Mont Saint-Hilaire
Mineral: Leifite
Image: 1108575902
License: Usage for Mineralienatlas project only
Leifit

Größe: 2.5 x 2.2 x 1.5 cm; Fundort: Mt St Hilaire, Quebec, Kanada

Copyright: Rob Lavinsky
Contribution: Mineralienatlas 2005-02-16
Locality: Mont Saint-Hilaire / La Vallée-du-Richelieu RCM / Montérégie, Region / Québec, Provinz / Kanada
Catapleiit (gelb) und Leifit
Views (File:
1279959160
): 957
Catapleiit (gelb) und Leifit
Größe: 76x63 mm, Fundort: Poudrette Quarry, Mont Saint-Hilaire, Rouville Co., Québec, Kanada
Copyright: Rock Currier; Contribution: Philip Blümner
Location: Kanada/Québec, Provinz/Montérégie, Region/La Vallée-du-Richelieu RCM/Mont Saint-Hilaire/Poudrette Quarry (Demix Quarry; Uni-Mix Quarry; Desourdy Quarry)
Mineral: Catapleiite, Leifite
Image: 1279959160
License: Usage for Mineralienatlas project only
Catapleiit (gelb) und Leifit

Größe: 76x63 mm, Fundort: Poudrette Quarry, Mont Saint-Hilaire, Rouville Co., Québec, Kanada

Copyright: Rock Currier
Contribution: Philip Blümner 2010-07-24
Locality: Poudrette Quarry (Demix Quarry; Uni-Mix Quarry; Desourdy Quarry) / Mont Saint-Hilaire / La Vallée-du-Richelieu RCM / Montérégie, Region / Québec, Provinz / Kanada

You find additional specimen at the Geolitho Museum

Collectors Summary

Color farblos, weiß
Streak color weiß
Hardness (Mohs) 6
Solubility - HCl
Crystal System trigonal, P3m1

Chemism

Chemical formula

Na7Be2(Si15Al3)O39(F,OH)2

Chemical composition

Aluminium, Beryllium, Natrium, Silicium, Fluor, Sauerstoff, Wasserstoff

Unit weight: 1342.159383975 u; Number of atoms in the formula: 68.5

Info

Empirical formula:

Na7Be2(Si15Al3)O39(F0.75(OH)0.25)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.04

0.5

0.73

1.0079470

0.5039735

Beryllium

Be

1.34

2

2.92

9.0121823

18.0243646

Oxygen

O

47.09

39.5

57.66

15.9994300

631.9774850

Fluorine

F

2.12

1.5

2.19

18.9984033

28.4976049

Sodium

Na

11.99

7

10.22

22.9897702

160.9283914

Aluminium

Al

6.03

3

4.38

26.9815382

80.9446146

Silicon

Si

31.39

15

21.90

28.0855300

421.2829500

Analysis wt%

SiO2 : 69.96, Al2O3 : 8.50, BeO : 3.72, Na2O : 14.75, K2O : 0.51, Rb2O : 0.42, F : 2.93 (Ref: Canadian Mineralogist 2002)

Strunz 9th edition incl. updates

9.EH.25

9: Silikate (Germanate)
E: Schichtsilikate (Phyllosilikate)
H: Übergangsstrukturen zwischen Schichtsilikaten und anderen Silikaten
25:Leifit-Gruppe

Lapis Classification

VIII/J.10-010

VIII: SILIKATE
J: Gerüstsilikate (mit Zeolithen)
10: Mit tetraederfremden Anionen

Classification by Hölzel

9.FJ.320

9: SILICATES
F: Tektosilicates
J: Singly connected 4-Ring Chains

Dana 8th edition

78.07.10.01

78: Unclassified Silicate Minerals
07: Unclassified silicates wholly unclassified silicates

IMA status

Neudefinition von der CNMNC anerkannt

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos, weiß

Streak color

weiß

Diaphaneity (Transparency)

transparent

max. Birefringence

0.004

Birefringence chart\! Leifite title=Birefringence chart Leifite

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

1.516

RI value γ / ε

1.520

Ri mean

1.517

2V angle

Uniaxial (+)

Optical Data Luminescence

Color LW-UV (365nm)

 

orangegelb

LW-UV Intensity

schwach

Color SW-UV (254nm)

 

grün

SW-UV Other Colors

         

weiß, blassrosa weiß, violettrosa, rosa, lilarosa

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

trigonal

Class (H-M)

3m

Space Group number

164

Space Group

P3m1

Cell parameters a (Å)

14.352

Cell parameters b (Å)

-

Cell parameters c (Å)

4.852

Cell parameters a/b or c/a

0.338

Cell parameters c/b

-

Z

1

Volume (ų)

865.518

X-Ray Powder Diffraction

4.69(70),
4.52(70),
4.14(70),
3.38(100),
3.15(100),
3.11(70),
2.46(90),
2.39(70)

XRD chart Leifite

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

VHN (Hardness Vickers)

730 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.57

2.575 ( ρ calc. Mineralienatlas )

Instability

- HCl

Preface

Author (Name, Year)

Bøggild, 1915

References

Canadian Mineralogist 40 (2002), 183

Other languages

German

Leifit

Spanish

Leifita

French

Leifite

English

Leifite

Russian

Лейфит

Traditional Chinese

白針柱石

Simplified Chinese

白针柱石

CNMNC symbol

Symbol

Lf

Locations with GPS information

IDs

GUSID (Global unique identifier short form) _vw76prurkq5u_0vjW6zig
GUID (Global unique identifier) EA3BFCFE-EE9A-4AAE-B9BB-FD2F8D6EB38A
Database ID 2170