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Cruz Alta
Basic information Name: Cruz Alta
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2008
Country: Brazil
Mass:help 48 kg
Classification
  history:
Recommended:  Iron, IIAB    [explanation]

This is 1 of 128 approved meteorites classified as Iron, IIAB.   [show all]
Search for other: IIAB irons, Iron meteorites, and Metal-rich meteorites
Comments: Approved 17 Oct 2014
Writeuphelp
Writeup from MB 103:

Cruz Alta        28°33’43"S, 53°37’4"W

Rio Grande do Sul, Brazil

Found: 2008

Classification: Iron meteorite (IIAB)

History: A farmer who was removing stones exposed on a plowed field found that one was much heavier than the others. The finder sent samples to Andre Moutinho who did preliminary tests and then sent to MNRJ for further analysis and classification.

Physical characteristics: A flatted elipsoidal mass weighing 48 kg and measuring approximately 30 × 20 × 35 cm.

Petrography: Hexaedrite, showing the usual irregular patches of clear and frosty kamacite, troilite, and schreibersite.

Geochemistry: (J.T. Wasson, UCLA) INAA: 5.77% Ni; 0.45% Co; 59.1 ppm Ga; 211 ppm Ge; 16.2 ppm Ir; 0.546 ppm Au.

Classification: This IIAB has no close relatives in South America; the only similar IIAB irons are Coahuila (16.1 μg/g Ir) and Yarroweyah (16.0 μg/g Ir). All other Ir values differ by >10% relative (J. Wasson UCLA).

Specimens: Main mass with finder, 50 g Andre Moutinho, 25 g MNRJ.

Data from:
  MB103
  Table 0
  Line 0:
State/Prov/County:Rio Grande do Sul
Origin or pseudonym:field
Date:2008
Latitude:28°33'43"S
Longitude:53°37'4"W
Mass (g):48000
Pieces:1
Class:Iron, IIAB
Classifier:J.T. Wasson, UCLA
Type spec mass (g):25
Type spec location:MNRJ
Main mass:finder
Finder:Sr Victor
Comments:Submitted by Maria Elizabeth Zucolotto
Institutions
   and collections
MNRJ: Museu Nacional, Quinta da Boa Vista, Rio de Janeiro, CEP 20940-040, Brazil (institutional address; updated 26 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. 103, in preparation (2014)
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Andre Moutinho   
Rodrigo Guerra   
Geography:

Brazil
Coordinates:
     Recommended::   (28° 33' 43"S, 53° 37' 4"W)

Statistics:
     This is 1 of 8 approved meteorites from Rio Grande do Sul, Brazil (plus 1 unapproved name)
     This is 1 of 71 approved meteorites from Brazil (plus 6 unapproved names) (plus 6 impact craters)
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