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Allendeite

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About AllendeiteHide

Formula:
Sc4Zr3O12
Specific Gravity:
4.84 (Calculated)
Crystal System:
Trigonal
Name:
Named after the Allende meteorite, which fell in Puebilito de Allende, Chihuahua, Mexico in 1969
Well-known as a synthetic compound.
Crystal structure is derived from the fluorite structure type.


Classification of AllendeiteHide

Approved
Approval Year:
2007
4.CC.

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
4.6.8.

4 : SIMPLE OXIDES
6 : Miscellaneous

Physical Properties of AllendeiteHide

Density:
4.84 g/cm3 (Calculated)

Chemical Properties of AllendeiteHide

Formula:
Sc4Zr3O12

Crystallography of AllendeiteHide

Crystal System:
Trigonal
Class (H-M):
3 - Rhombohedral
Space Group:
R3
Cell Parameters:
a = 9.396 Å, c = 8.720 Å
Ratio:
a:c = 1 : 0.928
Unit Cell V:
666.7 ų
Z:
3

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.698 (5)
2.900 (100)
2.513 (18)
1.779 (27)
1.776 (32)
1.515 (19)
1.450 (4)
1.152 (4)

Type Occurrence of AllendeiteHide

Geological Setting of Type Material:
Found in the Allende meteorite as micro- to nano-crystals in an ultrarefractory inclusion, ACM-1

Synonyms of AllendeiteHide

Related Minerals - Nickel-Strunz GroupingHide

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.30LatrappiteCa2NbFe3+O6Orth. mmm (2/m 2/m 2/m) : Pnma
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 : P3 1 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

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 AllendeiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Collongues, Robert; Qucyroux, Francine; Jorba, Monique Perez y; Gilles, Jean Claude (1965): Structure and properties of the compounds of rare earth oxides with oxides of the Group IV elements. Bulletin de la Societe Chimique de France 1965, 1141-1149.
Thornber, M. R.; Bevan, D. J. M.; Graham, J. (1968): Mixed oxides of the type MO2(fluorite)-M2O3. III. Crystal structures of the intermediate phases Zr5Sc2O13 and Zr3Sc4O12. Acta Crystallographica, B24, 1183-1190.
Rossell, H. J. (1976): Crystal structures of some fluorite-related M7O12 compounds. Journal of Solid State Chemistry 19, 103-111.
Magunov, R. L.; Shklyar, G. L.; Katridi, V. F. (1989): The phase diagrams of the zirconia (hafnia)-scandium sesquioxide systems. Izvestiya Akademii Nauk SSSR, Neorganicheskie Materialy 25, 1224-1226.
Red'ko, V. P.; Lopato, L. M. (1991): Crystal structure of rare earth zirconates M4Zr3O12 and hafnates M4Hf3O12 (M = rare earth). Neorganicheskie Materialy 27, 1905-1910.
Bevan, D. J. M.; Mohyla, J.; Wallwork, Kia S.; Rossell, H. J.; Schweda, Eberhard (2002): Structural principles for anion-deficient, fluorite-related superstructures in the zirconia-scandia system. Zeitschrift für Anorganische und Allgemeine Chemie 628, 1180-1186.
Stanek, C. R.; Jiang, C.; Uberuaga, B. P.; Sickafus, K. E.; Cleave, A. R.; Grimes, R. W. (2009): Predicted structure and stability of A4B3O12 delta-phase compositions. Physical Review B: Condensed Matter and Materials Physics 80, 174101/1-174101/11.
Ma, C., J.R.Beckett & G.R.Rossman (2009): Allendeite and hexamolybdenum: two new ultra-refractory minerals in Allende and two missing links. 40th Lunar and Planetary Science Conference and Abstracts, 1402 (2009)
Ma, C., Beckett, J.R., Rossman, G.R. (2014): Allendeite (Sc4Zr3O12) and hexamolybdenum (Mo,Ru,Fe), two new minerals from an ultrarefractory inclusion from the Allende meteorite. American Mineralogist, 99, 654-666.

Internet Links for AllendeiteHide

Localities for AllendeiteHide

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.
China
 
  • Shaanxi Province
    • Hanzhong Prefecture
      • Ningqiang Co.
Wang, Y. & Hsu, W. (2009). Petrology and Mineralogy of the Ningqiang carbonaceous chondrite. Meteoritics & Planetary Science Vol. 44, #5, 763-780. (May 2009).
Mexico (TL)
 
  • Chihuahua
    • Pueblito de Allende
Ma, C., Beckett, J.R., Rossman, G.R. (2014): Allendeite (Sc4Zr3O12) and hexamolybdenum (Mo,Ru,Fe), two new minerals from an ultrarefractory inclusion from the Allende meteorite. American Mineralogist, 99, 654-666
Mineral and/or Locality  
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