Bastnäsite Group
A material that is NOT an approved mineral species
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About Bastnäsite Group
Formula:
M(CO3)X where M = REE, Th and X = F or OH
Closely related to the Ancylite Group.
F-enriched species in this group can form in an environment relatively low in F content, whereas OH-species are rare and occur only in low-temperature environments essentially devoid of F (Hsu, 1992).
The most common member of this group is bastnäsite-(Ce).
F-enriched species in this group can form in an environment relatively low in F content, whereas OH-species are rare and occur only in low-temperature environments essentially devoid of F (Hsu, 1992).
The most common member of this group is bastnäsite-(Ce).
Unique Identifiers
Mindat ID:
42527
Long-form identifier:
mindat:1:1:42527:8
GUID
(UUID V4):
(UUID V4):
5fa013e6-b10d-4497-856c-966c7c108da2
Chemistry of Bastnäsite Group
Mindat Formula:
M(CO3)X where M = REE, Th and X = F or OH
Relationship of Bastnäsite Group to other Species
Group Members:
| Bastnäsite | (Ce/Nd/Y/REE)(CO3)F | |
| Bastnäsite-(Ce) | Ce(CO3)F | Hex. 6 m2 : P6c2 |
| Bastnäsite-(La) | La(CO3)F | Hex. 6 m2 : P62c |
| Bastnäsite-(Nd) | Nd(CO3)F | Hex. 6 m2 : P62c |
| Bastnäsite-(Y) | Y(CO3)F | Hex. 6 m2 : P62c |
| Hydroxylbastnäsite-(Ce) | Ce(CO3)(OH) | Hex. 6 : P6 |
| Hydroxylbastnäsite-(La) | (La,Nd,Ce)(CO3)(OH,F) | Hex. 6 : P6 |
| Hydroxylbastnäsite-(Nd) | Nd(CO3)(OH) | Hex. 6 m2 : P62c |
| Thorbastnäsite | ThCa(CO3)2F2 · 3H2O | Hex. 6 m2 : P62c |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Bastnäsite Group
mindat.org URL:
https://www.mindat.org/min-42527.html
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References for Bastnäsite Group
Localities for Bastnäsite Group
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Zagi Mountain, Hameed Abad Kafoor Dheri, Peshawar District, Khyber Pakhtunkhwa Province, Pakistan