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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.

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)

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

Volumne (ų)

599.533

Kristall 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)

Haring, M.M., McDonald, A.M., Poirier, G. and Cooper, M.A. (2010)

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

Other languages

German

Laurentianit

English

Laurentianite

Russian

Лаурентианит

CNMNC (IMA)-Number

IMA 2010-018

CNMNC symbol

Symbol

Lre

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

German pages

DeWikiPedia - search for: Laurentianit
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English pages

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RRUFF - Raman, XRD and other mineral data - search for: Laurentianite
RRUFF - References and PDF downloads - search for: Laurentianite
American-Mineralogist-Crystal-Structure-Database - search for: Laurentianite
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Russian pages

Webmineral.ru - search for: Лаурентианит

Mineral Dealer

German pages

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Locations with GPS information