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Latrappite

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La Trappe Monastery
Formula:
Ca2NbFe3+O6
Hardness:
Crystal System:
Orthorhombic
Name:
Named introduced by Nickel (1964) after the Trappist (an order of the Cistercians) monastery of La Trappe, near the type locality. The material was first described as a Nb-rich variety of perovskite from the Oka carbonatite complex, Quebec, Canada and named as a niobian perovskite. The Nb content showed to be greater than the Ti content than in perovskite (CaTiO3), so it was defined and approved as a new mineral.
The status of latrappite has been questioned. Following Mitchell et al. 2016, the significant Fe3+ content was not considered by Nickel (1964) and the material investigated by Nickel (1964) and Nickel and McAdam (1963) was found to be a complex quaternary solid solution involving the components Ca2Nb2O7, Ca2Fe3+NbO6, CaTiO3 and NaNbO3.

Mitchell et al. 2016 suggested that the potential end-member latrappite be considered as analogous to synthetic 1:1 ordered Ca2Fe3+NbO6. They also recommended that only Ca-rich, Nb and Fe-rich perovskites [(Ca,Na)2(Nb,Fe3+,Ti)2O6] whose compositions are such that: (1) divalent cations prevail in the A-site with Ca dominant; and (2) pentavalent cations prevail in the B -site(s) with Nb dominant be termed latrappite.

It was thus redefined by IMA in 2016 as Ca2NbFe3+O6.


Note: it is not sure if latrappite belongs to the above-given subgroup of perovskites.




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Classification of LatrappiteHide

Approved
Notes:
Redefined by the IMA
First Published:
1963
Approval History:
Redefined, special procedure 2016.
4.CC.30

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
C : Metal: Oxygen = 2: 3,3: 5, and similar
C : With large and medium-sized cations
4.3.3.2

4 : SIMPLE OXIDES
3 : A2X3
18.1.13

18 : Niobates and Tantalates
1 : Niobates and tantalates containing neither rare earths nor U

Physical Properties of LatrappiteHide

Hardness:
5½ on Mohs scale

Chemical Properties of LatrappiteHide

Formula:
Ca2NbFe3+O6

Crystallography of LatrappiteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pnma
Cell Parameters:
a = 5.44 Å, b = 7.77 Å, c = 5.55 Å
Ratio:
a:b:c = 0.7 : 1 : 0.714
Unit Cell V:
234.59 ų (Calculated from Unit Cell)
Comment:
Spacegroup: P21/n (Mitchell et al. 2016)

Type Occurrence of LatrappiteHide

Synonyms of LatrappiteHide

Other Language Names for LatrappiteHide

Relationship of Latrappite to other SpeciesHide

Other Members of this group:
VapnikiteCa2CaUO6Mon. 2/m

Common AssociatesHide

Associated Minerals Based on Photo Data:
Fluorapatite3 photos of Latrappite associated with Fluorapatite on mindat.org.
Calcite3 photos of Latrappite associated with Calcite on mindat.org.
Magnetite3 photos of Latrappite associated with Magnetite on mindat.org.
Melilite3 photos of Latrappite associated with Melilite on mindat.org.
Ceriopyrochlore (of Hogarth 1977)1 photo of Latrappite associated with Ceriopyrochlore (of Hogarth 1977) on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

4.CC.AllendeiteSc4Zr3O12Trig. 3 : R3
4.CC.Yttriaite-(Y)Y2O3Iso.
4.CC.05ChrombismiteBi16CrO27Tet.
4.CC.10FreudenbergiteNa2(Ti,Fe)8O16Mon.
4.CC.15GrossiteCaAl4O7Mon. 2/m : B2/b
4.CC.20ChlormayeniteCa12Al14O32[◻4Cl2]Iso. 4 3m : I4 3d
4.CC.25YafsoaniteCa3Zn3(TeO6)2Iso. m3 (2/m 3)
4.CC.30LueshiteNaNbO3Orth. mmm (2/m 2/m 2/m)
4.CC.30NatroniobiteNaNbO3Mon.
4.CC.30PerovskiteCaTiO3Orth. mmm (2/m 2/m 2/m) : Pnma
4.CC.30BarioperovskiteBaTiO3Orth. mm2 : Amm2
4.CC.30LakargiiteCa(Zr,Sn,Ti)O3Orth. mmm (2/m 2/m 2/m) : Pnma
4.CC.30MegawiteCaSnO3Orth. mmm (2/m 2/m 2/m) : Pban
4.CC.35Loparite-(Ce)(Na,REE)Ti2O6
4.CC.35MacedonitePbTiO3Tet. 4/mmm (4/m 2/m 2/m) : P4/nmm
4.CC.35TausoniteSrTiO3Iso. 4 3m
4.CC.35Isolueshite(Na,La)NbO3Iso. m3m (4/m 3 2/m) : Pm3m
4.CC.40CrichtoniteSr(Mn,Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH)38Trig. 3 : R3
4.CC.40Davidite-(Ce)(Ce,La)(Y,U,Fe)(Ti,Fe)20(O,OH)38Trig. 3 : R3
4.CC.40Davidite-(La)(La,Ce)(Y,U,Fe)(Ti,Fe)20(O,OH)38Trig.
4.CC.40Davidite-(Y)(La,Ce,Na,Ca,Pb)(Y,Fe2+,◻)(Fe2+,Mn2+)2(Ti,Fe3+,Nb,Zr)18O38 (hypothetical)Trig.
4.CC.40LandauiteNaMnZn2(Ti,Fe)6Ti12O38Trig. 3 : R3
4.CC.40Lindsleyite(Ba,Sr)(Zr,Ca)(Fe,Mg)2(Ti,Cr,Fe)18O38Trig.
4.CC.40Loveringite(Ca,Ce,La)(Zr,Fe)(Mg,Fe)2(Ti,Fe,Cr,Al)18O38Trig.
4.CC.40Mathiasite(K, Ba, Sr)(Zr, Fe)(Mg,Fe)2 (Ti,Cr,Fe)18O38Trig.
4.CC.40SenaitePb(Mn,Y,U)(Fe,Zn)2(Ti,Fe,Cr,V)18(O,OH)38Trig.
4.CC.40Dessauite-(Y)(Sr,Pb)(Y,U)(Ti,Fe3+)20O38Trig. 3 : R3
4.CC.40Cleusonite(Pb,Sr)(U4+,U6+)(Fe2+,Zn)2(Ti,Fe2+,Fe3+)18(O,OH)38Trig. 3 : R3
4.CC.40Gramaccioliite-(Y)(Pb,Sr)(Y,Mn)Fe3+2(Ti,Fe3+)18O38Trig. 3
4.CC.45DiaoyudaoiteNaAl11O17Hex.
4.CC.45HawthorneiteBaMgTi3Cr4Fe2+2Fe3+2O19Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
4.CC.45Hibonite(Ca,Ce)(Al,Ti,Mg)12O19Hex.
4.CC.45LindqvistitePb2Mn2+Fe16O27Hex.
4.CC.45Magnetoplumbite(Pb,Mn)(Fe,Mn)12O19Hex.
4.CC.45PlumboferritePb2(Fe3+,Mn2+,Mg)11O19Trig. 3 2
4.CC.45YimengiteK(Cr,Ti,Fe,Mg)12O19Hex.
4.CC.45HaggertyiteBaFe2+4Fe3+2Ti5MgO19Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
4.CC.45NežilovitePbZn2Mn4+2Fe3+8O19Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
4.CC.45BatiferriteBaTi2Fe3+8Fe2+2O19Hex.
4.CC.45Hibonite-(Fe)(Fe,Mg)Al12O19Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
4.CC.45BarioferriteBaFe3+12O19Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
4.CC.50Jeppeite(K,Ba)2(Ti,Fe)6O13Mon.
4.CC.55ZenzénitePb3Fe4Mn3O15Hex.
4.CC.60Mengxianminite (of Huang et al.)(Ca,Na)3(Fe,Mn)2Mg2(Sn,Zn)5Al8O29

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

4.3.3.1PerovskiteCaTiO3Orth. mmm (2/m 2/m 2/m) : Pnma
4.3.3.3Loparite-(Ce)(Na,REE)Ti2O6
4.3.3.4LueshiteNaNbO3Orth. mmm (2/m 2/m 2/m)
4.3.3.4BarioperovskiteBaTiO3Orth. mm2 : Amm2
4.3.3.5TausoniteSrTiO3Iso. 4 3m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

18.1.1LithiotantiteLiTa3O8Mon.
18.1.2LueshiteNaNbO3Orth. mmm (2/m 2/m 2/m)
18.1.3NatroniobiteNaNbO3Mon.
18.1.4FranconiteNa(Nb2O5)(OH) · 3H2OMon.
18.1.5NatrotantiteNa2Ta4O11Mon.
18.1.6IrtyshiteNa2(Ta,Nb)4O11Hex.
18.1.7Rankamaite(Na,K)3(Ta,Nb,Al)11(O,OH)31Orth. mmm (2/m 2/m 2/m) : Cmmm
18.1.8Hydropyrochlore(H2O,□)2Nb2(O,OH)6(H2O)Iso. m3m (4/m 3 2/m) : Fd3m
18.1.9CalciotantiteCaTa4O11Hex.
18.1.10RynersoniteCaTa2O6Orth. mmm (2/m 2/m 2/m)
18.1.11Microlite GroupIso. m3m (4/m 3 2/m) : Fd3m
18.1.12BelyankiniteCa1-2(Ti,Nb)5O12 · 9H2O (?)Amor.
18.1.14Hochelagaite(Ca,Na,Sr)(Nb,Ti,Si,Al)4O11 · 8H2OMon.
18.1.15Bariomicrolite (of Hogarth 1977)Iso. m3m (4/m 3 2/m) : Fd3m
18.1.16ParabariomicroliteBaTa4O10(OH)2 · 2H2OTrig.
18.1.17Bariopyrochlore (of Hogarth 1977)A2Nb2(O,OH)6ZIso. m3m (4/m 3 2/m) : Fd3m
18.1.18AlumotantiteAlTaO4Orth. mmm (2/m 2/m 2/m) : Pbcn
18.1.19SimpsoniteAl4(Ta,Nb)3O13(OH,F)Trig. 3 : P3
18.1.20Sosedkoite(K,Na)5Al2(Ta,Nb)22O60Orth.
18.1.21Thoreaulite(Sn2+,Pb)(Ta,Nb)2O6Mon.
18.1.22Stannomicrolite (of Hogarth 1977)
18.1.23FoorditeSn2+(Nb,Ta)2O6Mon. 2/m : B2/b
18.1.24ChangbaiitePbNb2O6Trig.
18.1.25Plumbopyrochlore (of Skorobogatova et al.)A2Nb2(O,OH)6Z
18.1.26Plumbomicrolite (of Hogarth 1977)
18.1.27StibiocolumbiteSb(Nb,Ta)O4Orth. mm2
18.1.28StibiotantaliteSb(Ta,Nb)O4Orth. mm2
18.1.29NatrobistantiteIso.
18.1.30Cesplumtantite(Cs,Na)2(Pb,Sb3+)3Ta8O24Tet.
18.1.31Stibiomicrolite (of Groat et al.)
18.1.32Cesstibtantite
18.1.34BismutotantaliteBi(Ta,Nb)O4Orth.
18.1.35Bismutomicrolite (of Hogarth 1977)Iso. m3m (4/m 3 2/m) : Fd3m
18.1.36Tantalite-(Mn)MnTa2O6Orth. mmm (2/m 2/m 2/m) : Pbcn
18.1.37Gerasimovskite(Mn,Ca)(Nb,Ti)5O12 · 9H2O
18.1.38Tapiolite-(Mn)(Mn,Fe)(Ta,Nb)2O6Tet. 4/mmm (4/m 2/m 2/m) : P42/mnm
18.1.39Columbite-(Mn)(Mn,Fe)(Nb,Ta)2O6Orth. mmm (2/m 2/m 2/m) : Pbcn
18.1.40WodginiteMn2+Sn4+Ta2O8Mon.
18.1.41Ixiolite(Ta,Nb,Sn,Fe,Mn)4O8Orth.
18.1.42Columbite-(Fe)FeNb2O6Orth. mmm (2/m 2/m 2/m) : Pbcn
18.1.43Tantalite-(Fe)FeTa2O6Orth. mmm (2/m 2/m 2/m) : Pbcn
18.1.44ColumbiteOrth. mmm (2/m 2/m 2/m) : Pbcn
18.1.45Tantalite(Mn,Fe)(Ta,Nb)2O6
18.1.46Tapiolite(Fe,Mn)(Ta,Nb)2O6Tet. 4/mmm (4/m 2/m 2/m)
18.1.47Tapiolite-(Fe)(Fe,Mn)(Ta,Nb)2O6Tet. 4/mmm (4/m 2/m 2/m) : P42/mnm
18.1.48Columbite-(Mg)(Mg,Fe,Mn)(Nb,Ta)2O6Orth.
18.1.50Strüverite(Ti,Ta,Fe)O2
18.1.51 Staringite(Fe,Mn)x(Ta,Nb)2xSn6-3xO12

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 LatrappiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Nickel, E.H., Mcadam, R.C. (1963) Niobian perovskite from Oka, Quebec; a new classification for minerals of the perovskite group. Canadian Mineralogist: 7: 683-697.
Nickel, E.H. (1964) Latrappite - a proposed new name for the perovskite-type calcium niobate mineral from the Oka area of Quebec. Canadian Mineralogist: 8: 121-122.
Fleischer, M., Mandarino, J.A., Strunz, H., Cech, F. (1965) New mineral names. American Mineralogist: 50: 261-268.
Mitchell, R.H., Choi, J.-B., Hawthorne, F.C., Mccammon, C.A., Burns, P.C. (1998) Latrappite: a re-investigation. Canadian Mineralogist: 36: 107-116.
Neues Jahrbuch für Mineralogie, Monatshefte (1980): 171-174.
Chakhmouradian, A.R., Mitchell, R.H. (1998) A structural study of the perovskite series CaTi1-2xFexNbxO3. Journal of Solid State Chemistry: 138: 272-277 .
Chakhmouradian, A.R. (1996) On the development of niobium and rare-earth minerals in monticellite-calcite carbonatite of the Oka Complex, Quebec. The Canadian Mineralogist: 34: 479-484.
Mitchell, R., Welch, M.D., Chakhmouradian, A.R. (2016) Nomenclature of the perovskite supergroup: A hierarchical system of classification based on crystal structure and composition. Mineralogical Magazine: 80 (in press); https://doi.org/10.1180/minmag.2016.080.156

Internet Links for LatrappiteHide

Localities for LatrappiteHide

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
 
  • Québec
    • Laurentides
      • Deux-Montagnes RCM
        • Oka
Sabina (1966) GSC Paper 66-51, 46-47
NICKEL, E.H. (1966) Latrappite - a proposed new name for the perovskite-type calcium niobate mineral from the Oka area of Quebec. Canadian Mineralogist, 8, 122-123. NICKEL, E.H. & MCADAM, R.C. (1963): Niobian perovskite from Oka, Quebec; a new classification for minerals of the perovskite group. Canadian Mineralogist, 7, 683-697.
GOLD, D.P. (1972): The Monteregian Hills: ultra-alkaline rocks and the Oka carbonatite complex. 24th International Geological Congress (Montreal), Guidebook B-11.
Mineral and/or Locality  
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