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Perovskite Supergroup

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Generally ADX3 compounds, with A= A site, D = D site and X = O, F, Cl, but also OH, As.
The supergroup has its name after most common and first described mineral in the supergroup.
The structural Perovskite Supergroup was established and approved by IMA in 2016. It is defined by Mitchell et al. (2017) as those minerals whose structures consist of three-dimensional networks of corner-sharing octahedra and which adopt the aristotypic ADX3 perovskite structure or those of its derivatives. It consist of cubic to pseudocubic simple AXO3 oxides.
It is divided in two major groups: Stoichiometric Perovskites (with a ADX3 stoichiometry) and Non-stoichiometric Perovskites (with A2DD'X6 stoichiometry.
The non-stochiometric perovskites also includes hydroxide- and arsenide-based minerals (also known as defect perovskites, characterized by A- and/or D-site vacancies together with the anion-deficient minerals of the brownmillerite subgroup and hematophanite subgroup).
Several members are technologically very important ferroelectrics.

There is also a further division with subgroups and potential subgroups proposed; this nomenclature connects some species that are not necessarily similar in terms of chemistry alone:

Stoichiometric Perovskites

Subgroup Definition
Bridgmanite Subgroup Silicate single perovskites
Perovskite Subgroup Oxide single perovskites
Neighborite Subgroup Fluoride single perovskites
Chlorocalcite Subgroup Chloride single perovskites
Cryolite Subgroup D-site cation-ordered double fluoride perovskites
Vapnikite Subgroup D-site cation-ordered double oxide perovskites
Sulphohalite Subgroup D-site cation-ordered double antiperovskites

Non-stoichiometric Perovskites

Subgroup Definition
Söhngeite Subgroup
Schoenfliesite Subgroup
Stottite Subgroup A-site vacant double hydroxide perovskites
Brownmillerite Subgroup Anion-deficient perovskites
Skutterudite Subgroup A-site vacant quadruple perovskites
Oskarssonite Subgroup D-site vacant single perovskites
Cohenite Subgroup
Auricupride Subgroup D-site vacant inverse single perovskites
Diaboleite Subgroup D-site vacant double perovskites
Hematophanite Subgroup Anion-deficient partly-inverse D-site quadruple perovskites

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Classification of Perovskite SupergroupHide

Group Name
Approval History:
Approved by IMA, March 2016.

Chemical Properties of Perovskite SupergroupHide


Generally ADX3 compounds, with A= A site, D = D site and X = O, F, Cl, but also OH, As.

Relationship of Perovskite Supergroup to other SpeciesHide

Group Members:
Non-stoichiometric Perovskites 
  Auricupride Subgroup 
    Auricupride Cu3AuOrth.
  Brownmillerite Subgroup 
    Brownmillerite Ca2(Al,Fe3+)2O5Orth. mm2
    Shulamitite Ca3TiFe3+AlO8Orth. mmm (2/m 2/m 2/m) : Pmma
    Srebrodolskite Ca2Fe3+2O5Orth. mmm (2/m 2/m 2/m) : Pnma
  Cohenite Subgroup 
    Cohenite Fe3COrth.
  Hematophanite Subgroup 
    Hematophanite Pb4Fe3O8(OH,Cl)Tet. 4/mmm (4/m 2/m 2/m)
  Macedonite Subgroup 
  Oskarssonite Subgroup 
    Óskarssonite AlF3Trig. 3 : R3
    Waimirite-(Y) YF3Orth. mmm (2/m 2/m 2/m) : Pnma
  Schoenfliesite Subgroup M2+[Sn4+(OH)6]
    Burtite Ca[Sn(OH)6]Iso.
    Jeanbandyite Fe3+xFe2+1-xSn(OH)6-xOx (1 ≥ x > 0.5)Tet. 4/m : P42/n
    Mushistonite (Cu,Zn,Fe2+)[Sn(OH)6]
    Natanite Fe2+[Sn(OH)6]Iso. m3m (4/m 3 2/m) : Pn3m
    Schoenfliesite Mg[Sn(OH)6]Iso. m3 (2/m 3) : Pn3
    Vismirnovite Zn[Sn(OH)6]Iso.
    Wickmanite Mn2+[Sn(OH)6]Iso. m3 (2/m 3) : Pn3
  Skutterudite Subgroup 
    Ferroskutterudite (Fe,Co)As3Iso. m3m (4/m 3 2/m) : Im3m
    Kieftite CoSb3Iso.
    Nickelskutterudite (Ni,Co,Fe)As3Iso. m3 (2/m 3) : Im3
    Skutterudite CoAs3Iso. m3 (2/m 3) : Im3
  Söhngeite Subgroup M(OH)3
    Bernalite Fe(OH)3 · nH2O (n = 0.0 to 0.25)Orth. mmm (2/m 2/m 2/m) : Pmmn
    Dzhalindite In(OH)3Iso.
    Söhngeite Ga(OH)3Tet.
  Stottite Subgroup 
    Mopungite Na[Sb5+(OH)6]Tet. 4/m : P42/n
    Stottite Fe2+[Ge4+(OH)6]Tet.
    Tetrawickmanite Mn2+[Sn4+(OH)6]Tet. 4/m : P42/n
Stoichiometric Perovskites ADX3 or A2DD' X6
  Bridgmanite Subgroup ADSiO3
    Bridgmanite (Mg,Fe)SiO3Orth. mmm (2/m 2/m 2/m) : Pnma
  Chlorocalcite Subgroup ADCl3
    Chlorocalcite KCaCl3Orth. mmm (2/m 2/m 2/m) : Pnma
  Cryolite Subgroup A2DDF6
    Cryolite Na2NaAlF6Mon. 2/m
    Elpasolite K2NaAlF6Iso. m3 (2/m 3) : Pa3
    Simmonsite Na2LiAlF6Mon.
  Neighborite Subgroup ADF3
    Neighborite NaMgF3Orth. mmm (2/m 2/m 2/m)
    Parascandolaite KMgF3Iso. m3m (4/m 3 2/m) : Pm3m
  Perovskite Subgroup ADO3
    Barioperovskite BaTiO3Orth. mm2 : Amm2
    Isolueshite (Na,La)NbO3Iso. m3m (4/m 3 2/m) : Pm3m
    Loparite-(Ce) (Na,REE)Ti2O6
    Lueshite NaNbO3Orth. mmm (2/m 2/m 2/m)
    Macedonite PbTiO3Tet. 4/mmm (4/m 2/m 2/m) : P4/nmm
    Megawite CaSnO3Orth. mmm (2/m 2/m 2/m) : Pban
    Perovskite CaTiO3Orth. mmm (2/m 2/m 2/m) : Pnma
    Tausonite SrTiO3Iso. 4 3m
  Sulphohalite Subgroup D2XX’A6
    Sulphohalite Na6(SO4)2FClIso. m3m (4/m 3 2/m)
  Vapnikite Subgroup A2DDO6
    Latrappite Ca2NbFe3+O6Orth. mmm (2/m 2/m 2/m) : Pnma
    Vapnikite Ca2CaUO6Mon. 2/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.

Perovskite Supergroup in petrologyHide

References for Perovskite SupergroupHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Chakhmouradian, A.R., Mitchell, R.H. (1998) Compositional variation of perovskite-group minerals from the Khibina complex, Kola peninsula, Russia. The Canadian Mineralogist: 36: 953-969
Chakhmouradian, A.R., Mitchell, R.H. (2002) New data on pyrochlore- and perovskite-group minerals from the Lovozero alkaline complex, Russia. European Journal of Mineralogy: 14: 821-836
CNMNC Newsletter No. 30, April 2016, page 413; Mineralogical Magazine, 80, 413
Mitchell, R., Welch, M.D., Chakhmouradian, A.R. (2017): Nomenclature of the perovskite supergroup: A hierarchical system of classification based on crystal structure and composition. Mineralogical Magazine, 81, 411-461.

Internet Links for Perovskite SupergroupHide

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