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Horváthite-(Y)

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László & Elsa Horváth
Formula:
NaY(CO3)F2
Lustre:
Vitreous
Hardness:
4
Specific Gravity:
3.58
Crystal System:
Orthorhombic
Name:
Named in 1997 by Joel D. Grice and George Y. Chao in honor of Elsa [1947-] and László [July 31, 1937-] Horváth, husband-and-wife team dedicated to the collection, study, and documentation of the minerals from Mont Saint-Hilaire.
This page provides mineralogical data about Horváthite-(Y).


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Classification of Horváthite-(Y)Hide

Approved
Approval Year:
1996
5.BD.25

5 : CARBONATES (NITRATES)
B : Carbonates with additional anions, without H2O
D : With rare earth elements (REE)
Dana 7th ed.:
16.1.11.1
16a.3.11.2

16a : ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
3 : (AB)2(XO3)Zq

Physical Properties of Horváthite-(Y)Hide

Vitreous
Hardness:
Cleavage:
Very Good
[100] Very Good, [010] Good
Fracture:
Irregular/Uneven
Density:
3.58 g/cm3 (Measured)    3.46 g/cm3 (Calculated)

Optical Data of Horváthite-(Y)Hide

Type:
Biaxial (-)
RI values:
nα = 1.457 nβ = 1.543 nγ = 1.622
2V:
Measured: 82° , Calculated: 82°
Max Birefringence:
δ = 0.165
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
none

Chemical Properties of Horváthite-(Y)Hide

Formula:
NaY(CO3)F2

Crystallography of Horváthite-(Y)Hide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pmmn
Cell Parameters:
a = 6.964 Å, b = 9.173 Å, c = 6.302 Å
Ratio:
a:b:c = 0.759 : 1 : 0.687
Unit Cell V:
402.58 ų
Z:
4

Type Occurrence of Horváthite-(Y)Hide

Place of Conservation of Type Material:
Canadian Museum of Nature, Ottawa, Canada.
Geological Setting of Type Material:
From a pegmatite dike

Synonyms of Horváthite-(Y)Hide

Other Language Names for Horváthite-(Y)Hide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Analcime6 photos of Horváthite-(Y) associated with Analcime on mindat.org.
Siderite5 photos of Horváthite-(Y) associated with Siderite on mindat.org.
Chabazite-Na1 photo of Horváthite-(Y) associated with Chabazite-Na on mindat.org.
Leucophanite1 photo of Horváthite-(Y) associated with Leucophanite on mindat.org.
Sabinaite1 photo of Horváthite-(Y) associated with Sabinaite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

5.BD.05Cordylite-(Ce)NaBaCe2(CO3)4F Hex.
5.BD.05Lukechangite-(Ce)Na3Ce2(CO3)4FHex. 6mm : P63mc
5.BD.10Zhonghuacerite-(Ce)Ba2Ce(CO3)3FTrig.
5.BD.10Kukharenkoite-(Ce)Ba2Ce(CO3)3FMon. 2/m : P21/m
5.BD.10Kukharenkoite-(La)Ba2(La,Ce,Th)(CO3)3FMon. 2/m : P21/m
5.BD.15Cebaite-(Ce)Ba3Ce2(CO3)5F2
5.BD.15Cebaite-(Nd)Ba3(Nd,Ce)2(CO3)5F2Mon.
5.BD.18Arisite-(Ce)NaCe2(CO3)2[F2x(CO3)1-x]FHex. 6 m2 : P6m2
5.BD.18Arisite-(La)NaLa2(CO3)2[F2x(CO3)1-x]FHex. 6 m2 : P6m2
5.BD.20aBastnäsite-(Ce)Ce(CO3)FHex. 6 m2 : P6c2
5.BD.20aBastnäsite-(La)La(CO3)FHex.
5.BD.20aBastnäsite-(Y)Y(CO3)FHex. 6 m2 : P62c
5.BD.20aHydroxylbastnäsite-(Ce)Ce(CO3)(OH)Hex. 6 : P6
5.BD.20aHydroxylbastnäsite-(Nd)Nd(CO3)(OH)Hex.
5.BD.20aHydroxylbastnäsite-(La)(La,Nd,Ce)(CO3)(OH,F)Hex.
5.BD.20bParisite-(Ce)CaCe2(CO3)3F2Mon. m : Bb
5.BD.20bParisite-(Nd)Ca(Nd,Ce,La)2(CO3)3F2
5.BD.20dRöntgenite-(Ce)Ca2(Ce,La)3(CO3)5F3Trig. 3 : R3
5.BD.20cSynchysite-(Ce)CaCe(CO3)2FMon. 2/m : B2/b
5.BD.20cSynchysite-(Nd)CaNd(CO3)2F
5.BD.20cSynchysite-(Y)CaY(CO3)2FMon. 2/m : B2/b
5.BD.20aThorbastnäsiteThCa(CO3)2F2 · 3H2O
5.BD.20aBastnäsite-(Nd)Nd(CO3)F Hex. 6 m2 : P62c
5.BD.25Qaqarssukite-(Ce)Ba(Ce,REE)(CO3)2FTrig. 3 : P3
5.BD.35Huanghoite-(Ce)BaCe(CO3)2FTrig. 3m (3 2/m) : R3m

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 Horváthite-(Y)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Grice, J.D. and Chao, G.Y. (1997) Horváthite-(Y), rare-earth-fluorocarbonate, a new mineral species from Mont Saint-Hilaire, Quebec. Canadian Mineralogist: 35: 743-749.
Jambor, J.L. and Roberts, A.C. (1998) New mineral names. American Mineralogist: 83: 400-403.

Internet Links for Horváthite-(Y)Hide

Localities for Horváthite-(Y)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 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.
Canada (TL)
 
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
Grice, J.D. and Chao, G.Y. (1997) Horváthite-(Y), rare-earth-fluorocarbonate, a new mineral species from Mont Saint-Hilaire, Quebec. Canadian Mineralogist: 35: 743-749.; Jambor, J.L. and Roberts, A.C. (1998) New mineral names. American Mineralogist: 83: 400-403.
      • Lajemmerais RCM
        • Varennes & St-Amable
          • Saint-Amable sill
HORVÁTH, L. & HORVÁTH, E. (2017) An update of the minerals of the Saint-Amable sill (2017). Canadian Micro-Mineral Association, Micronews 51 (9), 2-4. Horváth & Canadian Museum of Nature collections; confirmed by XRD July 2017.
Mineral and/or Locality  
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