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Bastnäsite-(Y)

Pictures (1 Images total)

Bastnäsit-(Y) pseudomorph nach Gagarinit-(Y)
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Bastnäsit-(Y) pseudomorph nach Gagarinit-(Y)
Bildbreite: 12 mm; Fundort: Verkhnee-Espe-Massiv, Tarbagatai-Gebirge, Ostkasachstan, Kasachstan
Copyright: Pavel M. Kartashov; Contribution: Philip Blümner
Collection: Pavel Kartashov, Collection number: 2107
Location: Kasachstan/Schyghys Qasaqstan oblysy (Ostkasachstan)/Tarbagatai-Gebirge/Verkhnee-Espe-Massiv
Mineral: Bastnäsite-(Y)
Image: 1240140122
License: Usage for Mineralienatlas project only
Bastnäsit-(Y) pseudomorph nach Gagarinit-(Y) (SNr: 2107)

Bildbreite: 12 mm; Fundort: Verkhnee-Espe-Massiv, Tarbagatai-Gebirge, Ostkasachstan, Kasachstan
Collection: Pavel Kartashov
Copyright: Pavel M. Kartashov
Contribution: Philip Blümner 2009-04-19
Locality: Verkhnee-Espe-Massiv / Tarbagatai-Gebirge / Schyghys Qasaqstan oblysy (Ostkasachstan) / Kasachstan

Collectors Summary

Color ziegelrot
Streak color weiß
Hardness (Mohs) 4.00 - 4.50
Solubility +++ warme Säuren, + Säuren
Crystal System hexagonal, P62c

Chemism

Chemical formula

Y(CO3)F

Chemical composition

Yttrium, Fluor, Kohlenstoff, Sauerstoff

Unit weight: 167.91332525 u; Number of atoms in the formula: 6

Info

Empirical formula:

Y(CO3)F

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Carbon

C

7.15

1

16.67

12.0107800

12.0107800
Oxygen

O

28.59

3

50.00

15.9994300

47.9982900
Fluorine

F

11.31

1

16.67

18.9984033

18.9984033
Yttrium

Y

52.95

1

16.67

88.9058520

88.9058520

Analysis wt%

La2O3 : 0.91, Ce2O3 : 4.54, Pr2O3 : 1.17, Nd2O3 : 4.02, Sm2O3 : 3.44, Gd2O3 : 4.41, Tb2O3 : 1.04, Dy2O3 : 7.14, Ho2O3 : 1.69, Tm2O3 : 0.71, Yb2O3 : 3.44, Lu2O3 : 1.10, Y2O3 : 26.01, ThO2 : 0.72, CaO : 4.09, K2O : 0.40, CO2 : 18.99, F : 7.28, H2O : 5.10, Al2O3 : 0.40, Fe2O3 : 3.30, SiO2 : 3.00, Ln2O3 : 60.00 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 70)

Strunz 9th edition incl. updates

5.BD.35

5: Carbonate (Carbonate, Nitrate)
B: Carbonate mit weitere Anionen, ohne H2O
D: Mit Selten-Erden-Elementen (REE)
35:Bastnäsit-Gruppe

Lapis Classification

V/C.07-010

V: NITRATE, CARBONATE UND BORATE
C: Wasserfreie Carbonate, mit fremden Anionen
7: Bastnäsit-Gruppe

Classification by Hölzel

5.BD.202

5: CARBONATES NITRATES ARSENITES SULFITES SELENITES TELLURITES IODATES
B: Carbonates (+Anions -Water)
D: Carbonates with Rare Earth Elements
2: F/CO3=1 Bastnäsite-Group

Dana 8th edition

16a.01.01.03

16a: Carbonates - Hydroxyl or Halogen
01: Carbonates - Hydroxyl or Halogen in the Bastnasite/Shynchysite/Parasite Groups
01: Bastnasite Subgroup

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Bastnäsite group

Optical Properties

Color

ziegelrot

Streak color

weiß

RI value γ / ε

1.665

2V angle

Uniaxial (+)

Crystallography

Crystal System

hexagonal

Class (H-M)

6m2

Space Group number

190

Space Group

P62c

Cell parameters a (Å)

6.57

Cell parameters b (Å)

-

Cell parameters c (Å)

9.48

Cell parameters a/b or c/a

1.443

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

6

Volume (ų)

354.38

X-Ray Powder Diffraction

3.43(70),
2.78(100),
1.976(70),
1.948(100),
1.822(70),
1.608(40),
1.521(40),
1.260(50)
XRD chart Bastnäsite-(Y)

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

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

4.00 - 4.50

VHN (Hardness Vickers)

230 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

4.72 (berechnet) 4 (gemessen)

4.721 ( ρ calc. Mineralienatlas )

Instability

+++ warme Säuren, + Säuren

(Co-)Type locality

(Co-)Type locality

Kasachstan/Schyghys Qasaqstan oblysy (Ostkasachstan)/Tarbagatai-Gebirge/Verkhnee-Espe-Massiv

Preface

Author (Name, Year)

Mineev & Lavrishcheva & Bykova, 1970

References

Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 99 (1970), 328

IMA group assignments

 
Bastnäsite group
 
 
 

 
 
Bastnäsite-(Ce)
(Ce,La)(CO3)F
hexagonal
P62c

 
 
Bastnäsite-(La)
(La,Ce)(CO3)F
hexagonal
P62c

 
 
Bastnäsite-(Nd)
Nd(CO3)F
hexagonal
P62c

 
 
Bastnäsite-(Y)
Y(CO3)F
hexagonal
P62c

 
 
Hydroxylbastnäsite-(Ce)
(Ce,La)(CO3)(OH,F)
hexagonal
 

 
 
Hydroxylbastnäsite-(La)
La(CO3)(OH)
hexagonal
P6

 
 
Hydroxylbastnäsite-(Nd)
(Nd,La)(CO3)(OH,F)
hexagonal
 

 
 
Thorbastnäsite
ThCa(CO3)2F2·3H2O
hexagonal
P62c

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Actuality: 12. Sep 2024 - 22:21:19

Other languages

French

Bastnaesite-(Y)

German

Bastnäsit-(Y)

Spanish

Bastnäsita-(Y)

English

Bastnäsite-(Y)

Russian

Бастнезит-(Y)

CNMNC symbol

Symbol

Bsn-Y

Locations with GPS information

IDs

GUSID (Global unique identifier short form) Rez8br5nXUS_K1ZzgkKR2w
GUID (Global unique identifier) 6EFCEC45-67BE-445D-BF2B-5673824291DB
Database ID 316