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Laurentianite

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Laurentianit
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Laurentianit
Nadelige Kristalle. Mount Saint Hilaire, Quebec, Kanada. BB: 2,8mm.
Copyright: Mabu; Contribution: Mabu
Collection: Mabu
Location: Kanada/Québec/Montérégie, Region/La Vallée-du-Richelieu RCM/Mont Saint-Hilaire/Poudrette Quarry (Demix Quarry; Uni-Mix Quarry; Desourdy Quarry)
Mineral: Laurentianite
Image: 1477600133
License: Usage for Mineralienatlas project only
Laurentianit

Nadelige Kristalle. Mount Saint Hilaire, Quebec, Kanada. BB: 2,8mm.

Collection: Mabu
Copyright: Mabu
Contribution: Mabu 2016-10-27
Locality: Poudrette Quarry (Demix Quarry; Uni-Mix Quarry; Desourdy Quarry) / Mont Saint-Hilaire / La Vallée-du-Richelieu RCM / Montérégie, Region / Québec / Kanada

Collectors Summary

Crystal System trigonal, P3

Chemism

Chemical formula

Na3Nb3Si4O17·9H2O

Chemical composition

Natrium, Niob, Silicium, Sauerstoff, Wasserstoff

Unit weight: 894.1588026 u; Number of atoms in the formula: 54

Info

Empirical formula:

Na3Nb3Si4O17·9H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

2.03

18

33.33

1.0079470

18.1430460

Oxygen

O

46.52

26

48.15

15.9994300

415.9851800

Sodium

Na

7.71

3

5.56

22.9897702

68.9693106

Silicon

Si

12.56

4

7.41

28.0855300

112.3421200

Niobium

Nb

31.17

3

5.56

92.9063820

278.7191460

Analysis wt%

SiO2 : 26.88, Nb2O5 : 44.59, Na2O : 10.40, H2O : 18.13 (Ref: berechnet)

Strunz 9th edition incl. updates

9

9: Silikate (Germanate)
9:
9:

Lapis Classification

VIII/C.15-080

VIII: SILIKATE
C: Gruppensilikate
15: Gruppensilikate [Si2O7] 6-, mit tetraederfremden Anionen (O,OH,F); Bafertisit-Reihe

Classification by Hölzel

9.AI.490

9: SILICATES
A: Nesosilicates
I: Nesosilicates with OH
4: C small + large without REE's

IMA status

anerkannt - CNMNC Newsletter, July 2010

Mineral status

anerkanntes Mineral

Crystallography

Crystal System

trigonal

Class (H-M)

3

Space Group number

143

Space Group

P3

Cell parameters a (Å)

9.944

Cell parameters b (Å)

-

Cell parameters c (Å)

7.001

Cell parameters a/b or c/a

0.704

Cell parameters c/b

-

Z

1

Volume (ų)

599.533

Crystal structure

Struktur bestimmt, neuer Strukturtyp

X-Ray Powder Diffraction

8.608(100), 7.005(19), 4.312(25), 4.062(13), 3.675(25), 3.260(31), 2.870(20), 1.836(14)

XRD chart Laurentianite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

2.476 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Kanada/Québec/Montérégie, Region/La Vallée-du-Richelieu RCM/Mont Saint-Hilaire/Poudrette Quarry (Demix Quarry; Uni-Mix Quarry; Desourdy Quarry)

Type material

Sammlung des Royal Ontario Museum, Department of Natural History, 100 Queen’s Park, Toronto, ON, Canada M5S 2C6

Collection number of type material

Katalognummer M55369

Preface

Author (Name, Year)

Monika M.M. Haring, Andrew M. McDonald, Mark A. Cooper, Glenn A. Poirier (2012)

References

Haring, M.M., McDonald, A.M., Poirier, G. and Cooper, M.A. (2010) Laurentianite, IMA 2010-018. CNMNC Newsletter, August 2010, page 798; Mineralogical Magazine, 74, 797-800.

Monika M.M. Haring, Andrew M. McDonald, Mark A. Cooper, Glenn A. Poirier: Laurentianite, [NbO(H2O)]3(Si2O7)2[Na(H2O)2]3, a new mineral from Mont Saint-Hilaire, Quebec: description, crystal-structure determination and paragenesis. Can Mineral Vol. 50, Nr. 5 (2012) S. 1265-1280.

Other languages

German

Laurentianit

English

Laurentianite

Russian

Лаурентианит

CNMNC (IMA)-Number

IMA 2010-018

CNMNC symbol

Symbol

Lre

Locations with GPS information

IDs

GUSID (Global unique identifier short form) NSziYVSoLEa5KY_mnsWiPA
GUID (Global unique identifier) 61E22C35-A854-462C-B929-8FE69EC5A23C
Database ID 6936