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Leifite (Leifit)

Pictures (6 Images total)

Leifit
Views (Image: 1165498794): 1306
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 / Kanada
Leifit
Views (Image: 1295886258): 1002
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 / Kanada
Leifit
Views (Image: 1165498764): 1006
Leifit

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 / Kanada
Leifit
Views (Image: 1108575902): 1139
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 / Kanada
Catapleiit (gelb) und Leifit
Views (Image: 1279959160): 892
Catapleiit (gelb) und Leifit

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

Copyright: Rock Currier
Contribution: slugslayer 2010-07-24
Locality: Poudrette Quarry (Demix Quarry; Uni-Mix Quarry; Desourdy Quarry) / Mont Saint-Hilaire / La Vallée-du-Richelieu RCM / Montérégie, Region / Québec / Kanada
Leifit
Views (Image: 1312659851): 347
Leifit

Größe: 77x57 mm; Fundort: Poudrette Quarry, Mont Saint-Hilaire, Rouville Co., Québec, Kanada

Collection: Jaquis Bradley
Copyright: Rock Currier
Contribution: slugslayer 2011-08-06
Locality: Poudrette Quarry (Demix Quarry; Uni-Mix Quarry; Desourdy Quarry) / Mont Saint-Hilaire / La Vallée-du-Richelieu RCM / Montérégie, Region / Québec / Kanada

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

Volumne (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

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

German pages

DeWikiPedia - search for: Leifit
Google-Bilder-Suche - search for: Leifit
Mineralienatlas.de (Forum) - search for: Leifit

English pages

Mindat - search for: Leifite
Webmineral - search for:Leifite
Handbook-of-Mineralogy - search for: Leifite
RRUFF - Raman, XRD and other mineral data - search for: Leifite
RRUFF - References and PDF downloads - search for: Leifite
American-Mineralogist-Crystal-Structure-Database - search for: Leifite
Strahlen.org - search for: Leifite

Russian pages

Webmineral.ru - search for: Лейфит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Leifit
Crystal-Treasure.com - search for: Leifit
Bosse - search for: Leifit
Edelsteine Neuburg - Gundolf Fischer - search for: Leifit

Locations with GPS information