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Xenotime-(Yb)

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Xenotim-(Yb)
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Xenotim-(Yb)
Bildbreite: 2 mm, Fundort: Håkonhals-Pegmatit, Finnøy, Hamarøy, Nordland, Norwegen
Copyright: Luigi Chiappino; Contribution: thdun5
Location: Norwegen/Nordland, Provinz/Hamarøy, Kommune/Finnøy/Håkonhals-Pegmatit
Mineral: Xenotime-(Yb)
Image: 1271790505
Rating: 3.5 (votes: 2)
License: Usage for Mineralienatlas project only
Xenotim-(Yb)

Bildbreite: 2 mm, Fundort: Håkonhals-Pegmatit, Finnøy, Hamarøy, Nordland, Norwegen

Copyright: Luigi Chiappino
Contribution: thdun5 2010-04-20
Locality: Håkonhals-Pegmatit / Finnøy / Hamarøy, Kommune / Nordland, Provinz / Norwegen

Collectors Summary

Color farblos, gelblich weiß, bräunlich weiß
Streak color weiß
Hardness (Mohs) 4.00 - 5.00
Cleavages nicht beobachtet
Fracture uneben
Crystal System tetragonal, I41/amd

Chemism

Chemical formula

(Yb,Y,Er)[PO4]

Chemical composition

Erbium, Ytterbium, Yttrium, Phosphor, Sauerstoff

Unit weight: 242.1949668 u; Number of atoms in the formula: 6

Info

Empirical formula:

(Yb0.6Y0.3Er0.1)[PO4]

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

26.42

4

66.67

15.9994300

63.9977200

Phosphorus

P

12.79

1

16.67

30.9737612

30.9737612

Yttrium

Y

11.01

0.3

5.00

88.9058520

26.6717556

Erbium

Er

6.91

0.1

1.67

167.2593000

16.7259300

Ytterbium

Yb

42.87

0.6

10.00

173.0430000

103.8258000

Strunz 9th edition incl. updates

8.AD.35

8: Phosphate, Arsenate, Vanadate
A: Phosphate, etc., ohne weitere Anionen, ohne H2O
D: Mit ausschließlich großen [Kationen]
35:Xenotim-Gruppe

Lapis Classification

VII/A.14-008

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
A: Wasserfreie Phosphate [PO4] 3-, ohne fremde Anionen
14: Sehr große Kationen: Ca-Na-K, SE, Bi u.a.; Xenotim-Gruppe

Classification by Hölzel

8.AE.110

8: PHOSPHATES ARSENATES VANADATES
A: Phosphates (-anions -water)
E: Xenotime-Group

Dana 8th edition

38.04.11.06

38: Anhydrous Phosphates, etc
04: Anhydrous Phosphates, etc A+ XO4
11: Zenotime Group (Tetragonal: I41/amd)

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Xenotime group

Optical Properties

Color

farblos, gelblich weiß, bräunlich weiß

Streak color

weiß

Diaphaneity (Transparency)

transparent

max. Birefringence

0.085

Birefringence chart\! Xenotime-(Yb) title=Birefringence chart Xenotime-(Yb)

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

1.717

RI value γ / ε

1.802

Ri mean

1.745

2V angle

Uniaxial (+)

Crystallography

Crystal System

tetragonal

Class (H-M)

4/mmm

Space Group number

141

Space Group

I41/amd

Cell parameters a (Å)

6.866

Cell parameters b (Å)

-

Cell parameters c (Å)

6.004

Cell parameters a/b or c/a

0.874

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

4

Volume (ų)

283.04

X-Ray Powder Diffraction

4.515(70),
3.437(100),
2.730(30),
2.556(80),
2.430(20),
2.138(30),
1.920(20),
1.760(50)

XRD chart Xenotime-(Yb)

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)

4.00 - 5.00

Density (g/cm³)

5.85 (berechnet)

5.683 ( ρ calc. Mineralienatlas )

Cleavages

nicht beobachtet

Fracture

uneben

Tenacity

spröde

Preface

Author (Name, Year)

Buck & Cooper & Cerny & Grice & Hawthorne, 1999

References

Canadian Mineralogist 37 (1999), 1303

IMA group assignments

Other languages

German

Xenotim-(Yb)

Spanish

Xenotima-(Yb)

English

Xenotime-(Yb)

French

Xenotime-(Yb)

Russian

Ксенотим-(Yb)

Simplified Chinese

磷镱矿

Alternative Name

Japanese

イッテルビウムゼノタイム

CNMNC (IMA)-Number

IMA 1998-049

CNMNC symbol

Symbol

Xtm-Yb

Locations with GPS information

IDs

GUSID (Global unique identifier short form) nqujtjOh_0mfdUlkh8KLPg
GUID (Global unique identifier) B6A3AB9E-A133-49FF-9F75-496487C28B3E
Database ID 4210