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Fluorbritholite-(Nd)

A valid IMA mineral species
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Formula:
Ca2Nd3(SiO4)3F
Colour:
brownish pink
Lustre:
Vitreous, Greasy
Hardness:
5
Specific Gravity:
4.92 (Calculated)
Crystal System:
Hexagonal
Name:
For the Nd rich Fluorbritholite
Not chemically unique - compare mendeleevite-(Nd).

Also compare carlgieseckeite-(Nd).


Hide all sections | Show all sections

Unique IdentifiersHide

Mindat ID:
470770
Long-form identifier:
mindat:1:1:470770:3
GUID
(UUID V4):
87c1f153-e2b7-4687-9c89-3c5b7f1acdb9

IMA Classification of Fluorbritholite-(Nd)Hide

Classification of Fluorbritholite-(Nd)Hide

Strunz-mindat (2024):
9.AH.

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

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
Fbri-NdIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of Fluorbritholite-(Nd)Hide

Lustre:
Vitreous, Greasy
Transparency:
Transparent
Colour:
brownish pink
Streak:
white
Hardness:
5 on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven, Sub-Conchoidal
Density:
4.92(1) g/cm3 (Calculated)

Optical Data of Fluorbritholite-(Nd)Hide

Type:
Uniaxial (-)
Pleochroism:
Non-pleochroic
Comments:
overall ncalc = 1.795

Chemistry of Fluorbritholite-(Nd)Hide

Mindat Formula:
Ca2Nd3(SiO4)3F
Elements listed:
Ca, F, Nd, O, Si - search for minerals with similar chemistry

Chemical AnalysisHide

Empirical formulas:
Sample IDEmpirical Formula
1(Ca1.62Nd0.97Ce0.83Y0.52Sm0.30Gd0.23Pr0.17La0.16Dy0.11Er0.03Tb0.03Ho0.01Yb0.01)?4.99(Si2.92P0.08As0.01)?3.01O12.00[O0.48F0.26(OH)0.14Cl0.10Br0.02]?1.00
Sample references:
IDLocalityReferenceNotes
1Malmkärra Mine, Norberg, Västmanland County, Sweden
Holtstam et al. (2023)
via EPMA (WDS)

Crystallography of Fluorbritholite-(Nd)Hide

Crystal System:
Hexagonal
Class (H-M):
6/m - Dipyramidal
Space Group:
P63/m
Cell Parameters:
a = 9.5994(3) Å, c = 6.9892(4) Å
Ratio:
a:c = 1 : 0.728
Unit Cell V:
557.76 ų (Calculated from Unit Cell)
Z:
2

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.16 Å(20)
3.223 Å(30)
3.144 Å(30)
2.866 Å(100)
2.823 Å(55)
2.769 Å(35)
1.977 Å(40)
1.869 Å(25)
1.785 Å(25)
Comments:
observed

Type Occurrence of Fluorbritholite-(Nd)Hide

Type Locality:
ⓘ Malmkärra Mine, Norberg, Västmanland County, Sweden
General Appearance of Type Material:
anhedral and small grains, rarely up to 250 µm across
Place of Conservation of Type Material:
mineral collection of the Department of Geosciences, Swedish Museum of Natural History, Box 50007, SE-10405 Stockholm, Sweden, under collection number GEO-NRM #20220221 (specimen and polished section).
Geological Setting of Type Material:
skarn
Associated Minerals at Type Locality:
TalcScheeliteMagnetiteLizarditeGadolinite-(Nd)
FluoriteDolomiteCalciteBaryte

Synonyms of Fluorbritholite-(Nd)Hide

Relationship of Fluorbritholite-(Nd) to other SpeciesHide

Member of:
Britholite Group > Apatite Supergroup
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
Fluorcalciobritholite(Ca,REE)5(SiO4,PO4)3FHex. 6/m : P63/m
Tritomite-(Ce)Ce5(SiO4,BO4)3(OH,O)
Tritomite-(Y)Y5(SiO4,BO4)3(O,OH,F)

Related Minerals - Strunz-mindat GroupingHide

9.AH.05Iimoriite-(Y)Y2[SiO4][CO3]Tric. 1 : P1
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. 2/m : P21/b
9.AH.15GaluskiniteCa7(SiO4)3(CO3) Mon. 2/m : P21/b
9.AH.20TernesiteCa5(SiO4)2(SO4)Orth. mmm (2/m 2/m 2/m) : Pnma
9.AH.20SilicocarnotiteCa5[(SiO4)(PO4)](PO4)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. 6/m : P63/m
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.25Fluorcalciobritholite(Ca,REE)5(SiO4,PO4)3FHex. 6/m : P63/m
9.AH.25Fluorbritholite-(Y)(Y,Ca)5(SiO4)3FHex. 6/m : P63/m
9.AH.25Britholite-(La)Ca2(La,Ce,Ca)3(SiO4,PO4)3(OH,F)
9.AH.25Calciobritholite(Ca,Y)5(SiO4,PO4)3(OH)
9.AH.35NabimusaiteKCa12(SiO4)4(SO4)2O2FTrig. 3m (3 2/m) : R3m
9.AH.35DargaiteBaCa12(SiO4)4(SO4)2O3Trig. 3m : R3m
9.AH.40ZadoviteBaCa6[(SiO4)(PO4)](PO4)2FTrig. 3m : R3m
9.AH.40GazeeviteBaCa6(SiO4)2(SO4)2OTrig. 3m (3 2/m) : R3m
9.AH.40StracheriteBaCa6(SiO4)2[(PO4)(CO3)]2FTrig. 3m (3 2/m) : R3m
9.AH.45FlamiteCa8-x(Na,K)x(SiO4)4-x(PO4)xOrth. mm2
9.AH.50ByzantieviteBa5(Ca,REE,Y)22(Ti,Nb)18(SiO4)4[(PO4),(SiO4)]4(BO3)9O22[(OH),F]43(H2O)1.5Trig. 3 : R3
9.AH.55Greenwoodite(Ba,V3+O)2V3+9(Fe3+,Fe2+)2Si2O22Trig. 3m (3 2/m) : P3m1
9.AH.60Kihlmanite-(Ce)Ce2TiO2(SiO4)(HCO3)2(H2O)Tric. 1 : P1
9.AH.65TsangpoiteCa5(PO4)2(SiO4)Hex.
9.AH.70Enalite(Th,REE,Al) [(PO4),(SiO4),(OH)]Tet.

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.

Internet Links for Fluorbritholite-(Nd)Hide

References for Fluorbritholite-(Nd)Hide

Localities for Fluorbritholite-(Nd)Hide

This 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.

Locality ListHide

- 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). 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Sweden (TL)
 
  • Västmanland County
    • Norberg
Holtstam et al. (2023)
    • Skinnskatteberg
      • Riddarhyttan
Holtstam et al. (2007)
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