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Puerta de Arauco
Basic information Name: Puerta de Arauco
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 1904
Country: Argentina
Mass:help 1533 g
Classification
  history:
NHM Catalogue:  5th Edition  (2000)  IVA
MetBase:  v. 7.1  (2006)  IVA
Recommended:  Iron, IAB-ung    [explanation]

This is 1 of 56 approved meteorites classified as Iron, IAB-ung.   [show all]
Search for other: IAB complex irons, Iron meteorites, and Metal-rich meteorites
Comments: Revised 30 May 2015: Formal classification
Writeuphelp
Writeup from MB 104:
Puerta de Arauco, classification as a IAB-complex iron

A sample of Puerta de Arauco was provided to John T. Wasson, UCLA, by Maria E. Varela. At the time of transfer, the mass was being called by the synonym "La Rioja" by the La Plata staff. The structure and the description of the size of the remaining mass were consistent with Buchwald's entry for Puerta de Arauco.  The new estimated bandwidth is 0.28, and Buchwald's was 0.35 mm; thus the structure is described correctly as Of.  The NHM catalog is incorrect is in calling the meteorite a IVA iron.  It is, in fact, an ungrouped member of the IAB complex, with the following composition: Cr = 87 µg/g; Co = 4.53 mg/g; Ni = 87.4 mg/g; Cu = 362 µg/g; Ga = 23.4 µg/g; As = 13.8 µg/g; Ru = 8.0 µg/g; Sb = 223 ng/g; W = 1.13 µg/g; Os = 8.4 µg/g; Ir = 7.1 µg/g; Pt = 11.7 µg/g; Au = 1.424 µg/g.

Buchwald The following entries were found for Puerta de Arauco in Buchwald (1975)
[Buchwald, Vagn F. (1975) Handbook of Iron Meteorites. University of California Press, 1418 pp.]
Institutions
   and collections
NHM: Department of Mineralogy, The Natural History Museum, Cromwell Road, London SW7 5BD, United Kingdom; Website (institutional address; updated 9 Dec 2011)
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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Geography:

Argentina
Coordinates:
     Catalogue of Meteorites:   (28° 53'S, 66° 40'W)
     Recommended::   (28° 53'S, 66° 40'W)

Statistics:
     This is 1 of 4 approved meteorites from La Rioja, Argentina
     This is 1 of 79 approved meteorites from Argentina (plus 9 unapproved names) (plus 2 impact craters)
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Synonymshelp: La Rioja (In NHM Cat)

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