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Bastnäsite-(La)

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Cuasso al Monte, Ceresio Valley, Varese Province, Lombardy, Italy

Formula:
(La,Ce)[F|CO
 
3
]
System:HexagonalHardness:4 - 5
Name:For the locality at the Bastnäs mines, Riddarhyttan, Skinnskatteberg, Västmanland, Sweden, plus the "-(La)" suffix due to the dominance of lanthanum in the composition.


Lanthanum analogue of Bastnäsite-(Ce) and Bastnäsite-(Y).

Classification of Bastnäsite-(La)

IMA status:Approved
Strunz 8th edition ID:5/C.07-20
Nickel-Strunz 10th (pending) edition ID:5.BD.35

5 : CARBONATES (NITRATES)
B : Carbonates with additional anions, without H2O
D : With rare earth elements (REE)
Dana 8th edition ID:16a.1.1.2

16a : ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
1 : (AB)(XO3)Zq
Hey's CIM Ref.:12.1.9

12 : Carbonates with other anions
1 : Carbonates with halides
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Type Occurrence of Bastnäsite-(La)

Type Locality:Belaya Zima REE-Nb Deposit, Sayan Mts, Tuva Republic, Eastern-Siberian Region, Russia

Physical Properties of Bastnäsite-(La)

Hardness (Mohs):4 - 5

Crystallography of Bastnäsite-(La)

Crystal System:Hexagonal

Optical Data of Bastnäsite-(La)

Type:Uniaxial (+)
RI values: nω = 1.717 nε = 1.818
Maximum Birefringence:δ = 0.101

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:High

Chemical Properties of Bastnäsite-(La)

Formula:
(La,Ce)[F|CO
 
3
]
Essential elements:C, F, La, O
All elements listed in formula:C, Ce, F, La, O

Relationship of Bastnäsite-(La) to other Species

Related Minerals - Nickel-Strunz Grouping):
5.BD.05Cordylite-(Ce)
(Na,Ca)BaCe
 
2
(CO
 
3
)
 
4
F
5.BD.05Lukechangite-(Ce)
Na
 
3
Ce
 
2
[F|(CO
 
3
)
 
4
]
5.BD.10Zhonghuacerite-(Ce)
Ba
 
2
Ce[F|(CO
 
3
)
 
3
]
5.BD.10Kukharenkoite-(Ce)
Ba
 
2
Ce[F|(CO
 
3
)
 
3
]
5.BD.10Kukharenkoite-(La)
Ba
 
2
(La,Ce,Th)[F|(CO
 
3
)
 
3
]
5.BD.15Cebaite-(Ce)
Ba
 
3
Ce
 
2
[F
 
2
|(CO
 
3
)
 
5
]
5.BD.15Cebaite-(Nd)
Ba
 
3
(Nd,Ce)
 
2
[F
 
2
|(CO
 
3
)
 
5
]
5.BD.20Synchysite-(Ce)
Ca(Ce,La)[F|(CO
 
3
)
 
2
]
5.BD.20Synchysite-(Nd)
Ca(Nd,Y,Gd)[F|(CO
 
3
)
 
2
]
5.BD.20Synchysite-(Y)
Ca(Y,Ce)[F|(CO
 
3
)
 
2
]
5.BD.25Huanghoite-(Ce)
BaCe[F|(CO
 
3
)
 
2
]
5.BD.25Qaqarssukite-(Ce)
Ba(Ce,REE) (CO
 
3
)
 
2
F
5.BD.30Parisite-(Ce)
Ca(Ce,La)
 
2
[F
 
2
|(CO
 
3
)
 
3
]
5.BD.30Parisite-(Nd)
Ca(Nd,Ce,La)
 
2
[F
 
2
|(CO
 
3
)
 
3
]
5.BD.30Röntgenite-(Ce)
Ca
 
2
(Ce,La)
 
3
[F
 
3
|(CO
 
3
)
 
5
]
5.BD.35Bastnäsite-(Ce)
(Ce,La)[F|CO
 
3
]
5.BD.35Bastnäsite-(Y)
(Y,Ce)[F|CO
 
3
]
5.BD.35Hydroxylbastnäsite-(Ce)
(Ce,La)[(OH,F)|CO
 
3
]
5.BD.35Hydroxylbastnäsite-(Nd)
(Nd,Ce,La)[(OH,F)|CO
 
3
]
5.BD.35Hydroxylbastnäsite-(La)
(La,Ce)[(OH,F)|CO
 
3
]
5.BD.35Thorbastnäsite
Th(Ca,Ce)(CO
 
3
)
 
2
F
 
2
·3H
 
2
O
5.BD.40Horváthite-(Y)
NaY[F
 
2
|CO
 
3
]
Related Minerals - Hey's Index Grouping:
12.1.1Northupite
Na
 
3
Mg(CO
 
3
)
 
2
Cl
12.1.2Barentsite
Na
 
7
AlH
 
2
(CO
 
3
)
 
4
F
 
4
12.1.3Rouvilleite
Na
 
3
(Ca,Mn,Fe)
 
2
(CO
 
3
)
 
3
F
12.1.4Chlormagaluminite
(Mg,Fe
2+
 
)
 
4
Al
 
2
[(OH)
 
12
|(Cl
 
2
,CO
 
3
)] · 2H
 
2
O
12.1.5Defernite
Ca
 
6
(CO
 
3
)
 
2-x
(SiO
 
4
)
 
x
(OH)
 
7
(Cl,OH)
 
1-2x
 (x=0.5)
12.1.6Brenkite
Ca
 
2
[F
 
2
|CO
 
3
]
12.1.7Stenonite
(Sr,Ba,Na)
 
2
AlCO
 
3
F
 
5
12.1.8Bastnäsite-(Ce)
(Ce,La)[F|CO
 
3
]
12.1.10Bastnäsite-(Y)
(Y,Ce)[F|CO
 
3
]
12.1.11Parisite-(Ce)
Ca(Ce,La)
 
2
[F
 
2
|(CO
 
3
)
 
3
]
12.1.12Parisite-(Nd)
Ca(Nd,Ce,La)
 
2
[F
 
2
|(CO
 
3
)
 
3
]
12.1.13Synchysite-(Ce)
Ca(Ce,La)[F|(CO
 
3
)
 
2
]
12.1.14Synchysite-(Y)
Ca(Y,Ce)[F|(CO
 
3
)
 
2
]
12.1.15Synchysite-(Nd)
Ca(Nd,Y,Gd)[F|(CO
 
3
)
 
2
]
12.1.16Röntgenite-(Ce)
Ca
 
2
(Ce,La)
 
3
[F
 
3
|(CO
 
3
)
 
5
]
12.1.17Cordylite-(Ce)
(Na,Ca)BaCe
 
2
(CO
 
3
)
 
4
F
12.1.19Huanghoite-(Ce)
BaCe[F|(CO
 
3
)
 
2
]
12.1.20Zhonghuacerite-(Ce)
Ba
 
2
Ce[F|(CO
 
3
)
 
3
]
12.1.21Cebaite-(Ce)
Ba
 
3
Ce
 
2
[F
 
2
|(CO
 
3
)
 
5
]
12.1.22Thorbastnäsite
Th(Ca,Ce)(CO
 
3
)
 
2
F
 
2
·3H
 
2
O
12.1.23Phosgenite
Pb
 
2
[Cl
 
2
|CO
 
3
]
12.1.24Barstowite
Pb
 
4
[Cl
 
6
|CO
 
3
] · H
 
2
O
12.1.25Albrechtschraufite
Ca
 
4
Mg(UO
 
2
)
 
2
[F
 
2
|(CO
 
3
)
 
6
] · 17 H
 
2
O
12.1.26Kettnerite
(BiO)Ca[F|CO
 
3
]

Other Names for Bastnäsite-(La)

Synonyms:
Bastnaesite-(La)
German names:
Bastnäsit-(La)
Russian names:
Бастнезит-(La)

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Bastnäsite-(La)

Reference List:American Mineralogist: 51: 152-158.

Aufschluss: 48: 367-379.

Internet Links for Bastnäsite-(La)

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    Localities for Bastnäsite-(La)

    Hide Locality List
    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Australia
     
    • South Australia
      • Mt Lofty Ranges
        • North Mt Lofty Ranges
          • Yunta
    		Pring, A., Wallwork, K., Brugger, J., Kolitsch, U. (2006): "Paratooite-(La), a new lanthanum-dominant rare-earth copper carbonate from Paratoo, South Australia", Mineral. Mag. 70, 131-138
    Germany
     
    • Baden-Württemberg
      • Black Forest
        • Wolfach
          • Oberwolfach
            • Rankach valley
    		KOLITSCH, U., GRAF, H. W. & BLAß, G. (1997): Untersuchungen über die Seltenerden-Carbonate Bastnäsit und Synchisit von der Grube Clara im Schwarzwald: Nachweis von Bastnäsit-(Ce), Bastnäsit-(Nd), Bastnäsit-(La) und Synchisit-(Ce). - Aufschluss 48, 367-79; U. Kolitsch, J. Gröbner, G. Blaß and H.-W. Graf (2007): Neufunde aus der Grube Clara im mittleren Schwarzwald (III): Cerianit-(Ce), Dravit, Florencit-(La), Gilmarit, Olenit und Scotlandit. Lapis 32, 19-23, 70.
    Greece
     
    • Attikí (Attica; Attika) Prefecture
      • Lavrion (Laurion; Laurium) District
        • Lavrion District Mines
          • Agios Konstantinos [St Constantine] (Kamareza; Kamariza)
            • Kamareza Mines
    		J. Gröbner und U. Kolitsch (2002): Neufunde von Laurion aus den Jahren 2001 und 2002. Aufschluss 53 (5-6), 363-371.
    Malawi
     
    • Phalombe District
    		Ngwenya, BT. (1994), Geochimica et Cosmochimica Acta: 58(9): 2061-2072.
    Nigeria
     
    • Nasarawa
    		Mineralogical Magazine (1983): 47: 41-46.
    Russia
     
    • Eastern-Siberian Region
      • Tuva Republic
        • Sayan Mts
    • Urals Region
      • Chelyabinsk Oblast'
        • Kyshtym (Kychtym; Kishtim)
    		Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 290; P.M. Kartashov data
    South Africa
     
    • Northwest Province
      • Western Bushveld Complex
        • Rustenburg District
          • Pilansberg Complex
    		The Canadian Mineralogist, V 42, 2004, pp. 1169-1178.
    South Korea
     
    • Chungcheongbukdo (Chungchong-pukto)
      • Chungju (Chung Won Kum; Chung-ju)
        • Joongwon-gun
          • Mt. Eorae
    		P.M. Kartashov data
    Sweden
     
    • Västmanland
      • Skinnskatteberg
        • Riddarhyttan
    		Kjell Gatedal
    USA
     
    • Arkansas
      • Hot Spring Co.
        • Magnet Cove
    • Wisconsin
      • Waupaca Co.
    		Rocks & Minerals 79:6 pp409-411
    Mineral and/or Locality
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