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Allendeite

Formula:
Sc
 
4
Zr
 
3
O
 
12
System:Trigonal
Name:Named for Puebilito de Allende, Chihuahua, Mexico, where the Allende meteorite fell in 1969
This page provides mineralogical data about Allendeite.

Classification of Allendeite

IMA status:Approved 2007
Dana 8th edition ID:4.6.8.

4 : SIMPLE OXIDES
6 : Miscellaneous
mindat.org URL:http://www.mindat.org/min-32284.html
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Type Occurrence of Allendeite

Type Locality:Allende meteorite (Pueblito de Allende meteorite; Qutrixpileo meteorite [NHM cat.]), Pueblito de Allende, Chihuahua, Mexico

Crystallography of Allendeite

Crystal System:Trigonal
Class (H-M):3 - Rhombohedral
Space Group:R3
Cell Parameters:a = 9.396Å, c = 8.72Å
Ratio:a:c = 1 : 0.928
Unit Cell Volume:V 666.70 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
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)

Chemical Properties of Allendeite

Formula:
Sc
 
4
Zr
 
3
O
 
12
All elements listed in formula:O, Sc, Zr

Other Names for Allendeite

Synonyms:
IMA2007-027
Other Languages:

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Allendeite

Reference List: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)

Internet Links for Allendeite

Search Engines:
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  • External Links:
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  • Look for Allendeite on Wikipedia
  • Look for Allendeite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Allendeite in the Natural History Museum (London) online catalogue
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    Localities for Allendeite

    The 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.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Mexico
     
    • Chihuahua
      • Pueblito de Allende
    IMA website - October 2007 approvals
    Mineral and/or Locality
    Google
     
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 9th Nov 2009 17:19:29