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Fluorcalciobritholite

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About FluorcalciobritholiteHide

Formula:
(Ca,REE)5(SiO4,PO4)3F
Colour:
Pinkish to brown
Hardness:
Specific Gravity:
4.2
Crystal System:
Hexagonal
Name:
The name follows convention and denotes its dominant fluorine and calcium content and its relationship to other britholite group minerals.
A mineral in the Britholite Group of the Apatite Supergroup. Defined as a distinct mineral by Pekov et al. (2007).


Classification of FluorcalciobritholiteHide

Approved
Approval Year:
2006
First Published:
2007
9.AH.25

9 : SILICATES (Germanates)
A : Nesosilicates
H : Nesosilicates with CO3, SO4, PO4, etc.
52.4.12.7

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

Physical Properties of FluorcalciobritholiteHide

Transparency:
Transparent, Translucent
Colour:
Pinkish to brown
Streak:
white
Hardness:
5½ on Mohs scale
Density:
4.2 g/cm3 (Measured)    

Optical Data of FluorcalciobritholiteHide

Type:
Uniaxial (-)
RI values:
nω = 1.735() nε = 1.730(5)
Max Birefringence:
δ = 0.005
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High

Chemical Properties of FluorcalciobritholiteHide

Formula:
(Ca,REE)5(SiO4,PO4)3F

Crystallography of FluorcalciobritholiteHide

Crystal System:
Hexagonal
Class (H-M):
6/m - Dipyramidal
Space Group:
P63/m
Cell Parameters:
a = 9.58(7) Å, c = 6.985(4) Å
Ratio:
a:c = 1 : 0.729
Unit Cell V:
555.2 ų
Z:
2
Morphology:
long-prismatic hexagonal crystals up to 0.5 x 10 mm

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.51 (45)
3.15 (70)
2.85 (100)
2.78 (60)
1.965 (25)
1.931 (20)
1.236 (25)
1.122 (30)

Type Occurrence of FluorcalciobritholiteHide

General Appearance of Type Material:
Grains and minute elongated crystals
Place of Conservation of Type Material:
Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, no. 3420/1.
Associated Minerals at Type Locality:
Reference:
Pekov, Igor V., Pasero, Marco, Yaskovskaya, Asiya N., Chukanov, Nikita V., Pushcharovsky, Dmitry Yu., Merlino, Stefano, Zubkova, Natalia V., Kononkova, Natalia N., Men'shikov, Yury P., Zadov, Aleksandr E. (2007) Fluorcalciobritholite, (Ca,REE)5[(Si,P)O4]3F, a new mineral: description and crystal chemistry. European Journal of Mineralogy: 19: 95-103.

Synonyms of FluorcalciobritholiteHide

Other Language Names for FluorcalciobritholiteHide

Simplified Chinese:氟硅磷灰石

Relationship of Fluorcalciobritholite to other SpeciesHide

Other Members of this group:
Britholite-(Ce)(Ce,Ca)5(SiO4)3OHHex. 6/m : P63/m
Britholite-(La)Ca2(La,Ce,Ca)3(SiO4,PO4)3(OH,F)
Britholite-(Y)(Y,Ca)5(SiO4)3OHHex. 6/m : P63/m
Calciobritholite(Ca,Y)5(SiO4,PO4)3(OH)
Fluorbritholite-(Ce)(Ce,Ca)5(SiO4)3FHex. 6/m : P63/m
Fluorbritholite-(Y)(Y,Ca)5(SiO4)3FHex. 6/m : P63/m
Tritomite-(Ce)Ce5(SiO4,BO4)3(OH,O)
Tritomite-(Y)Y5(SiO4,BO4)3(O,OH,F)

Common AssociatesHide

Associated Minerals Based on Photo Data:
Albite1 photo of Fluorcalciobritholite associated with Albite on mindat.org.
Nepheline1 photo of Fluorcalciobritholite associated with Nepheline on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.AH.05Iimoriite-(Y)Y2[SiO4][CO3]Tric.
9.AH.10Tundrite-(Ce)Na2Ce2Ti(SiO4)(CO3)2O2Tric. 1 : P1
9.AH.10Tundrite-(Nd)Na2(Nd,Ce)2Ti(SiO4)(CO3)2O2
9.AH.15SpurriteCa5(SiO4)2(CO3)Mon.
9.AH.20TernesiteCa5(SiO4)2(SO4)Orth. mmm (2/m 2/m 2/m) : Pnma
9.AH.25Britholite-(Ce)(Ce,Ca)5(SiO4)3OHHex. 6/m : P63/m
9.AH.25Britholite-(Y)(Y,Ca)5(SiO4)3OHHex. 6/m : P63/m
9.AH.25ChlorellestaditeCa5(SiO4)1.5(SO4)1.5ClHex. 6/m : P63/m
9.AH.25Fluorbritholite-(Ce)(Ce,Ca)5(SiO4)3FHex. 6/m : P63/m
9.AH.25FluorellestaditeCa5(SiO4)1.5(SO4)1.5FHex.
9.AH.25HydroxylellestaditeCa5(SiO4)1.5(SO4)1.5(OH)Hex. 6/mmm (6/m 2/m 2/m) : P63/mcm
9.AH.25MattheddleitePb5(SiO4)1.5(SO4)1.5(Cl,OH)Hex. 6/m : P63/m
9.AH.25Tritomite-(Ce)Ce5(SiO4,BO4)3(OH,O)
9.AH.25Tritomite-(Y)Y5(SiO4,BO4)3(O,OH,F)
9.AH.25Fluorbritholite-(Y)(Y,Ca)5(SiO4)3FHex. 6/m : P63/m

Related Minerals - Dana Grouping (8th Ed.)Hide

52.4.12.8Fluorbritholite-(Y)(Y,Ca)5(SiO4)3FHex. 6/m : P63/m

Other InformationHide

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

References for FluorcalciobritholiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Pekov, Igor V., Pasero, Marco, Yaskovskaya, Asiya N., Chukanov, Nikita V., Pushcharovsky, Dmitry Yu., Merlino, Stefano, Zubkova, Natalia V., Kononkova, Natalia N., Men'shikov, Yury P., Zadov, Aleksandr E. (2007) Fluorcalciobritholite, (Ca,REE)5[(Si,P)O4]3F, a new mineral: description and crystal chemistry. European Journal of Mineralogy: 19: 95-103.
Tait, K., Poirier, G., Rowe, R., Piilonen, P.C. (2008) New mineral names. American Mineralogist: 93: 252-256.

Internet Links for FluorcalciobritholiteHide

Localities for FluorcalciobritholiteHide

ⓘ - Click for 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). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Germany
 
  • Rhineland-Palatinate
    • Mayen-Koblenz
      • Mendig
        • Niedermendig
Schäfer, Ch. & Schäfer, H. (2018) Über Dawsonit, Britholith, Ferriallanit und einige Amphibole aus den Auswürflingen des Laacher Vulkans, Der Aufschluss, Vol. 69(4), 201-219
Kyrgyzstan
 
  • Batken Oblast
Pautov, L. A., Karpenko, V. Y., & Agakhanov, A. A. (2013) Baratovite-katayamalite Minerals from the Hodzha-achkan Alcaline Massif (Kirgizia). New Data on Minerals. 48:12-36
Norway
 
  • Nordland
    • Hamarøy
Selbekk, R. S., Husdal, T. A. & Berg, H-J. (2010): Nye mineraler for Norge i 2010. Stein. 37 (4): 24-26
Russia (TL)
 
  • Murmansk Oblast
    • Khibiny Massif
      • Kukisvumchorr Mt
        • East slope
European Journal of Mineralogy 19, 95-103(2007)
D. R. Zozulya, L. M. Lyalina, Ye. E. Savchenko (2015): Britholite ores of the Sakharjok Zr–Y–REE deposit, Kola Peninsula: Geochemistry, mineralogy, and formation stages. Geochemistry International, 53, 892-902.
Slovakia
 
  • Trenčín Region
    • Považská Bystrica Co.
Uher, P., Ondrejka, M., Bačík, P., Broska, I. and Konečný, P. (2015): Britholite, monazite, REE-carbonates and calcite: products of hydrothermal alteration of allanite and apatite in A-type granite from Stupné, Western Carpathians, Slovakia. Lithos, 236-237, 212-225.
Mineral and/or Locality  
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