https://www.edelsteine-neuburg.de
https://www.mineralbox.biz
https://www.mineraliengrosshandel.com
https://www.mineral-bosse.de
'._('einklappen').'
 

Schlüterite-(Y)

Collectors Summary

Color beigeweiß, blassrosa
Streak color weiß
Lustre Glasglanz
Hardness (Mohs) 5.5 - 6
Cleavages fehlt
Crystal System monoklin, P21/c
Morphology in drusigem Yttrofluorit bildet Schlüterit-(Y) feinfasrige Garben bis 2mm Länge

Chemism

Chemical formula

(Y,REE)2AlSi2O7(OH)2F

Additional chem. information

Verwandt mit den Mitgliedern der Epidot-Gruppe

Chemical composition

Aluminium, Silicium, Yttrium, Fluor, Sauerstoff, Wasserstoff, REE

Unit weight: 453.52054345 u; Number of atoms in the formula: 17

Info

Empirical formula:

(Y0.75REE0.25)2AlSi2O7(OH)2F

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.44

2

11.76

1.0079470

2.0158940

Oxygen

O

31.75

9

52.94

15.9994300

143.9948700

Fluorine

F

4.19

1

5.88

18.9984033

18.9984033

Aluminium

Al

5.95

1

5.88

26.9815382

26.9815382

Silicon

Si

12.39

2

11.76

28.0855300

56.1710600

Yttrium

Y

29.41

1.5

8.82

88.9058520

133.3587780

Rare Earth

REE

15.88

0.5

2.94

144.0000000

72.0000000

Strunz 9th edition incl. updates

9.BE.

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

Lapis Classification

VIII/C.18-015

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

Classification by Hölzel

9.BG.170

9: SILICATES
B: Sorosilicates
G: Mosandrite-Group

IMA status

anerkannt - Mai 2012 - CNMNC Newsletter No. 13, June 2012, page 808; Mineralogical Magazine, 76, 807-817

Mineral status

anerkanntes Mineral

Optical Properties

Color

beigeweiß, blassrosa

Streak color

weiß

Diaphaneity (Transparency)

durchscheinend, transparent

Lustre

Glasglanz

Optical Data Luminescence

Luminescence

keine Fluoreszenz in kurzwelligem UV

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/c

Cell parameters a (Å)

7.072

Cell parameters b (Å)

5.620

Cell parameters c (Å)

21.439

Cell parameters a/b or c/a

1.258

Cell parameters c/b

3.815

Cell parameters α

90°

Cell parameters β

122.78

Cell parameters γ

90°

Z

4

Volume (ų)

716.396

Crystal structure

Struktur bestimmt

X-Ray Powder Diffraction

4.788(100), 4.522(40), 3.297(48), 2.982(57), 2.813(39), 2.731(42), 2.634(42), 2.180(36)

XRD chart Schlüterite-(Y)

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

Morphology

in drusigem Yttrofluorit bildet Schlüterit-(Y) feinfasrige Garben bis 2mm Länge

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

5.5 - 6

Density (g/cm³)

4.64

4.205 ( ρ calc. Mineralienatlas )

Cleavages

fehlt

Tenacity

spröde

(Co-)Type locality

(Co-)Type locality

Norwegen/Nordland, Provinz/Narvik, Kommune/Stetind Pegmatit

Type material

Department of Natural History, Royal Ontario Museum, Toronto, Ontario, Canada;
Naturhistorisk Museum, Blindern, Oslo, Norway

Collection number of type material

M56409 (Canada); 42428 und 42429 (Oslo)

Preface

Associations

Calcioankylit, Bastnäsit, Stetindit

Name from

Dr. Jochen Schlüter, Kustos der Mineralogischen Museums der Universität Hamburg

Author (Name, Year)

Mark A. Cooper, Tomas Husdal, Neil Ball, Frank C. Hawthorne und Yassir Abdu (2012)

References

CNMNC Newsletter No. 13, June 2012, page 808; Mineralogical Magazine, 76, 807-817

Mineralogical Magazine, October 2012, Vol. 76(5), pp. 1281-1288 - [Neue Formel]

Lapis Jg. 39, Nr. 5, Mai 2014

M. A. Cooper, T. A. Husdal, N. A. Ball, Y. A. Abdu, F. C. Hawthorne, S. Krivovichev: Schlüterite-(Y), ideally (Y,REE)2Al(Si2O7)(OH)2F, a new mineral species from the Stetind pegmatite, Tysfjord, Nordland, Norway: description and crystal structure. Mineral Mag Vol. 77(2013) S. 353-366. published online May 8, 2013

Other languages

German

Schlüterit-(Y)

English

Schlüterite-(Y)

CNMNC (IMA)-Number

IMA 2012-015

CNMNC symbol

Symbol

Slü-Y

Locations with GPS information

IDs

GUSID (Global unique identifier short form) KtCurX3v2kuuQANjDkpihg
GUID (Global unique identifier) ADAED02A-EF7D-4BDA-AE40-03630E4A6286
Database ID 7407