Fluorbritholite-(Ce)
A valid IMA mineral species
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About Fluorbritholite-(Ce)
Formula:
(Ce,Ca)5(SiO4)3F
Colour:
Pale yellow, tan, reddish-brown
Lustre:
Adamantine
Hardness:
5
Specific Gravity:
4.66
Crystal System:
Hexagonal
Member of:
Name:
First described as a new mineral from Mont Saint-Hilaire, Quebec, Canada (Gu et al. 1994). Named for its relationship to britholite-(Ce) with the fluorine content.
A mineral in the Britholite Group of the Apatite Supergroup. The fluorine-dominant analogue of britholite-(Ce).
Unique Identifiers
Mindat ID:
1574
Long-form identifier:
mindat:1:1:1574:1
Similar Names
| Fluorbritholite | ||
| Fluorbritholite-(La) | A valid IMA mineral species - pending publication | Ca2La3(SiO4)3F |
| Fluorbritholite-(Nd) | A valid IMA mineral species | Ca2Nd3(SiO4)3F |
| Fluorbritholite-(Y) | A valid IMA mineral species | (Y,Ca)5(SiO4)3F |
IMA Classification of Fluorbritholite-(Ce)
Classification of Fluorbritholite-(Ce)
9.AH.25
9 : SILICATES (Germanates)
A : Nesosilicates
H : Nesosilicates with CO3, SO4, PO4, etc.
9 : SILICATES (Germanates)
A : Nesosilicates
H : Nesosilicates with CO3, SO4, PO4, etc.
52.4.9.8
52 : NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
4 : Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
52 : NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
4 : Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Fbri-Ce | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Fluorbritholite-(Ce)
Adamantine
Colour:
Pale yellow, tan, reddish-brown
Streak:
Pale brown
Hardness:
5 on Mohs scale
Cleavage:
Distinct/Good
{0001}
{0001}
Fracture:
Irregular/Uneven, Conchoidal
Density:
4.66(1) g/cm3 (Measured) 4.66 g/cm3 (Calculated)
Optical Data of Fluorbritholite-(Ce)
Type:
Uniaxial (-)
RI values:
nω = 1.792 nε = 1.786
Max. Birefringence:
δ = 0.006
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Moderate
Chemistry of Fluorbritholite-(Ce)
Mindat Formula:
(Ce,Ca)5(SiO4)3F
Element Weights:
Crystallography of Fluorbritholite-(Ce)
Crystal System:
Hexagonal
Class (H-M):
6/m - Dipyramidal
Space Group:
P63/m
Setting:
P63/m
Cell Parameters:
a = 9.517 Å, b = 6.983 Å
Unit Cell V:
547.7 ų
Z:
2
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0002670 | Fluorbritholite-(Ce) | Oberti R, Ottolini L, Della Ventura G, Parodi G C (2001) On the symmetry and crystal chemistry of britholite: New structural and microanalytical data American Mineralogist 86 1066-1075 |  | 2001 | 0 | 293 | |
| 0002669 | Fluorbritholite-(Ce) | Oberti R, Ottolini L, Della Ventura G, Parodi G C (2001) On the symmetry and crystal chemistry of britholite: New structural and microanalytical data American Mineralogist 86 1066-1075 | | 2001 | 0 | 293 |
CIF Raw Data - click here to close
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 35 : Ultra-alkali and agpaitic igneous rocks |
Type Occurrence of Fluorbritholite-(Ce)
Geological Setting of Type Material:
In vugs in nepheline syenite, marble xenoliths, sodalite syenite xenoliths and pegmatite dykes
Associated Minerals at Type Locality:
Synonyms of Fluorbritholite-(Ce)
Other Language Names for Fluorbritholite-(Ce)
Dutch:Fluorbritholiet-(Ce)
German:Fluorbritholith-(Ce)
Simplified Chinese:氟铈硅磷灰石
Traditional Chinese:氟鈰矽磷灰石
Relationship of Fluorbritholite-(Ce) to other Species
Member of:
Other Members of Britholite Group:
| Britholite-(Ce) | (Ce,Ca)5(SiO4)3OH | Hex. 6/m : P63/m |
| 'Britholite-(La)' | Ca2(La,Ce,Ca)3(SiO4,PO4)3(OH,F) | |
| Britholite-(Y) | (Y,Ca)5(SiO4)3OH | Hex. 6/m : P63/m |
| 'Calciobritholite' | (Ca,Y)5(SiO4,PO4)3(OH) | |
| Fluorbritholite-(La) | Ca2La3(SiO4)3F | Hex. 6/m : P63/m |
| Fluorbritholite-(Nd) | Ca2Nd3(SiO4)3F | Hex. 6/m : P63/m |
| Fluorbritholite-(Y) | (Y,Ca)5(SiO4)3F | Hex. 6/m : P63/m |
| Fluorcalciobritholite | (Ca,REE)5(SiO4,PO4)3F | Hex. 6/m : P63/m |
| Tritomite-(Ce) | Ce5(SiO4,BO4)3(OH,O) | |
| Tritomite-(Y) | Y5(SiO4,BO4)3(O,OH,F) |
Common Associates
Associations Based on Photo Data:
| 17 photos of Fluorbritholite-(Ce) associated with Västmanlandite-(Ce) | CaCe3(MgAl2Mg)[Si2O7][SiO4]3F(OH)2 |
| 13 photos of Fluorbritholite-(Ce) associated with Allanite-(Ce) | (CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH) |
| 3 photos of Fluorbritholite-(Ce) associated with Dollaseite-(Ce) | (CaCe)(MgAlMg)F[Si2O7][SiO4](OH) |
| 2 photos of Fluorbritholite-(Ce) associated with Pyrite | FeS2 |
| 2 photos of Fluorbritholite-(Ce) associated with Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| 2 photos of Fluorbritholite-(Ce) associated with Calcite | CaCO3 |
| 2 photos of Fluorbritholite-(Ce) associated with 'Eleolite' | (Na,K)AlSiO4 |
| 2 photos of Fluorbritholite-(Ce) associated with Fluorite | CaF2 |
| 2 photos of Fluorbritholite-(Ce) associated with Feldspar Group | |
| 2 photos of Fluorbritholite-(Ce) associated with Quartz | SiO2 |
Related Minerals - Strunz-mindat Grouping
| 9.AH. | Fluorbritholite-(Nd) | Ca2Nd3(SiO4)3F |
| 9.AH.05 | Iimoriite-(Y) | Y2[SiO4][CO3] |
| 9.AH.10 | Tundrite-(Ce) | Na2Ce2Ti(SiO4)(CO3)2O2 |
| 9.AH.10 | Tundrite-(Nd) | Na2(Nd,Ce)2Ti(SiO4)(CO3)2O2 |
| 9.AH.15 | Galuskinite | Ca7(SiO4)3(CO3) |
| 9.AH.15 | Spurrite | Ca5(SiO4)2(CO3) |
| 9.AH.20 | Ternesite | Ca5(SiO4)2(SO4) |
| 9.AH.20 | Silicocarnotite | Ca5[(SiO4)(PO4)](PO4) |
| 9.AH.25 | Britholite-(Ce) | (Ce,Ca)5(SiO4)3OH |
| 9.AH.25 | Britholite-(Y) | (Y,Ca)5(SiO4)3OH |
| 9.AH.25 | Mattheddleite | Pb5(SiO4)1.5(SO4)1.5(Cl,OH) |
| 9.AH.25 | Fluorellestadite | Ca5(SiO4)1.5(SO4)1.5F |
| 9.AH.25 | Fluorbritholite-(La) | Ca2La3(SiO4)3F |
| 9.AH.25 | Fluorbritholite-(Y) | (Y,Ca)5(SiO4)3F |
| 9.AH.25 | Hydroxylellestadite | Ca5(SiO4)1.5(SO4)1.5(OH) |
| 9.AH.25 | 'Calciobritholite' | (Ca,Y)5(SiO4,PO4)3(OH) |
| 9.AH.25 | 'Britholite-(La)' | Ca2(La,Ce,Ca)3(SiO4,PO4)3(OH,F) |
| 9.AH.25 | Tritomite-(Ce) | Ce5(SiO4,BO4)3(OH,O) |
| 9.AH.25 | Tritomite-(Y) | Y5(SiO4,BO4)3(O,OH,F) |
| 9.AH.25 | Fluorcalciobritholite | (Ca,REE)5(SiO4,PO4)3F |
| 9.AH.25 | Chlorellestadite | Ca5(SiO4)1.5(SO4)1.5Cl |
| 9.AH.35 | Dargaite | BaCa12(SiO4)4(SO4)2O3 |
| 9.AH.35 | Nabimusaite | KCa12(SiO4)4(SO4)2O2F |
| 9.AH.40 | Stracherite | BaCa6(SiO4)2[(PO4)(CO3)]F |
| 9.AH.40 | Zadovite | BaCa6[(SiO4)(PO4)](PO4)2F |
| 9.AH.40 | Gazeevite | BaCa6(SiO4)2(SO4)2O |
| 9.AH.45 | Flamite | Ca8-x(Na,K)x(SiO4)4-x(PO4)x |
| 9.AH.50 | Byzantievite | Ba5(Ca,REE,Y)22(Ti,Nb)18(SiO4)4[(PO4),(SiO4)]4(BO3)9O22[(OH),F]43(H2O)1.5 |
| 9.AH.55 | Greenwoodite | (Ba,V3+O)2V3+9(Fe3+,Fe2+)2Si2O22 |
| 9.AH.60 | Kihlmanite-(Ce) | Ce2TiO2(SiO4)(HCO3)2(H2O) |
| 9.AH.65 | Tsangpoite | Ca5(PO4)2(SiO4) |
| 9.AH.70 | 'Enalite' | (Th,REE,Al) [(PO4),(SiO4),(OH)] |
Fluorescence of Fluorbritholite-(Ce)
None
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 Fluorbritholite-(Ce)
mindat.org URL:
https://www.mindat.org/min-1574.html
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References for Fluorbritholite-(Ce)
Localities for Fluorbritholite-(Ce)
Showing 33 localities.
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.
Brazil | |
| Azzi (2017) |
Canada | |
| Kyla M. Arden and Norman M. Halden (1999) |
| MÖLLER (2016) |
| Pavel M. Kartashov 2018 +1 other reference |
| GU et al. (1994) +1 other reference |
| Mohammadi et al. (2025) | |
China | |
| Miyawaki et al. (2011) |
| Wu et al. (2019) +1 other reference |
| Yang et al. (2025) |
Czech Republic | |
| Jaranowski et al. (2025) |
Germany | |
| Zubkova. N.V. et al. (2015) |
Japan | |
| Imaoka et al. (2024) |
Madagascar | |
| Estrade (2014) |
Russia | |
| Pavel M. Kartashov analytical data 2018 +2 other references |
| Pavel M. Kartashov (n.d.) +1 other reference |
| Kasatkin (2019) | |
| Sorokhtina et al. (2018) |
| Pavel M. Kartashov analythical data of ... |
South Africa | |
| Giebel et al. (2017) |
Sweden | |
| Strand (1999) |
| Strand (1999) | |
| RRUFF ID: R070412 +1 other reference |
| Andersson et al. (2024) |
| Holtstam et al. (2005) +1 other reference | |
| Andersson et al. (2024) |
| Holtstam et al. (2007) +1 other reference |
| Andersson et al. (2024) |
Ukraine | |
| Dumańska-Słowik et al. (2012) |
USA | |
| Pavel M. Kartashov analytical data (2011) +1 other reference |
| Charles Stern et al. (2016) | |
| Collected by Phil Persson +1 other reference | |
| van Rossen (2026) |
Vietnam | |
| Feldman l.G. et al. (1987) |
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In den Dellen quarries, Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany