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Hydroxylbastnäsite-(La)

Collectors Summary

Color wachsgelb
Streak color weiß
Hardness (Mohs) 4
Solubility +++ warme Säuren, + Säuren
Crystal System hexagonal, P6

Additional information / Summary

Teile der Daten stammen von früheren Veröffentlichungen

Chemism

Chemical formula

La(CO3)(OH)

Chemical composition

Lanthanum, Kohlenstoff, Sauerstoff, Wasserstoff

Unit weight: 215.921967 u; Number of atoms in the formula: 7

Info

Empirical formula:

La(CO3)(OH)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.47

1

14.29

1.0079470

1.0079470
Carbon

C

5.56

1

14.29

12.0107800

12.0107800
Oxygen

O

29.64

4

57.14

15.9994300

63.9977200
Lanthanum

La

64.33

1

14.29

138.9055200

138.9055200

Analysis wt%

La2O3 : 84.01, CO2 : 11.35, H2O : 4.65, Ln2O3 : 84.01 (Ref: berechnet)

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.07-040

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

Classification by Hölzel

5.BD.250

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

IMA status

anerkannt - CNMNC Newsletter 61, April - Mai 2021

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Bastnäsite group

Optical Properties

Color

wachsgelb

Streak color

weiß

RI value α / ω / n

1.760

Ri mean

1.760

2V angle

Biaxial

Crystallography

Crystal System

hexagonal

Class (H-M)

3m

Space Group number

174

Space Group

P6

Cell parameters a (Å)

12.537(3)

Cell parameters b (Å)

-

Cell parameters c (Å)

9.968(2)

Cell parameters a/b or c/a

0.795

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Volume (ų)

1356.831

Crystal structure

Bastnäsit-Gruppe; Struktur ermittelt

X-Ray Powder Diffraction

4.98(39), 3.616(88), 2.926(100), 2.089(41), 2.052(46), 1.927(40), 1.701(24), 1.319(20)
XRD chart Hydroxylbastnäsite-(La)

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

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

4

VHN (Hardness Vickers)

190 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

4.63 (berechnet)

Instability

+++ warme Säuren, + Säuren

(Co-)Type locality

(Co-)Type locality

Montenegro/Niksic

Russland/Ural, Föderationskreis/Tscheljabinsk (Chelyabinsk), Oblast/Kyschtym (Kishtim)/Mochalin Log (Мочалин лог)

Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Vuorijärvi-Massiv (Vuoriyarvi)

Type material

Das Typmaterial ist in den Sammlungen des Fersman Mineralogischen Museums, Russische Akademie der Wissenschaften, Leninskiy Prospekt 18-2, Moskau 119071, Russland, Registriernummern 5644, hinterlegt.

References

Maksimovic, Z., Panto, Gy. - Mineralogy of yttrium and lanthanide elements in karstic bauxite deposits. Trav. Comite Internatl. Etude Bauxites, Alumine, et Aluminum: 13 (1983) 191-200.

Hawthorne, F.C., Fleischer, M., Grew, E.S., Grice, J.D., Jambor, J.L., Puziewicz, J., Roberts, A.C., Vanko, D.A., Zilczer, J.A. - New mineral names. American Mineralogist: 71 (1986) 1277-1282 (1277).

Hsu, L. C. - Synthesis and stability of bastnaesites in a part of the system (Ce, La)-F-H-C-O. Mineralogy and Petrology 47 (1992) 81-101.

Michiba, K., Tahara, T., Nakai, I., Miyawaki, R., Matsubara, S. - Crystal structure of hexagonal RE(CO3)OH. Zeitschrift für Kristallographie: 226 (2011) 518-530.

Igor V. Pekov, Natalia V. Zubkova, Anatoly V. Kasatkin, Nikita V. Chukanov, Natalia N. Koshlyakova, Dmitry A. Ksenofontov, Radek Škoda, Sergey N. Britvin, Anatoly S. Kirillov, Anatoly N. Zaitsev, Aleksey M. Kuznetsov, und Dmitry Y. Pushcharovsky (2021)

IMA group assignments

Other languages

Spanish

Hidroxilbastnäsita-(La)

French

Hydroxylbastnaesite-(La)

German

Hydroxylbastnäsit-(La)

English

Hydroxylbastnäsite-(La)

Alternative Name

German

Hydroxylcarbonat-(La)

Am. Mineral. 87 (2002), 766.

The Canadian Mineralogist Vol. 44, pp. 1557-1560 (2006)

English

Hydroxylcarbonate-(La)

American Mineralogist (2002): 87: 766.

Burke, Ernest A.J. - A Mass Discreditation of GQN Minerals. Canadian Mineralogist (2007) 44(6) 1557-1560.

CNMNC (IMA)-Number

IMA 2021-001

Locations with GPS information

IDs

GUSID (Global unique identifier short form) AViQq24wpEKhcopyqykbSg
GUID (Global unique identifier) AB905801-306E-42A4-A172-8A72AB291B4A
Database ID 1682