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Cruz del Eje
Basic information Name: Cruz del Eje
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 1971
Country: Argentina
Mass:help 14 kg
Classification
  history:
Meteoritical Bulletin:  MB 98  (2010)  Iron, IAB complex
Recommended:  Iron, IAB complex    [explanation]

This is 1 of 68 approved meteorites (plus 1 unapproved name) classified as Iron, IAB complex.   [show all]
Search for other: IAB complex irons, Iron meteorites, and Metal-rich meteorites
Comments: Approved 2 Jun 2010
Writeuphelp
Writeup from MB online:

Cruz del Eje        30°45’S, 64°47’W

Cordoba, Argentina

Found: 10 May 1971

Classification: Iron meteorite (IAB complex)

History: A single metallic mass of 14.0 kg was found outside the town of Cruz del Eje by an anonymous person. A sample of this metal including both interior and exterior portions was sent to Cascadia in March, 2008 for examination.

Physical characteristics: (A. Ruzicka, Cascadia): The exterior surface has a brown to black weathering patina. The interior is relatively featureless except for irregular cracks at grain boundaries, along which minor weathering has occurred.

Petrography: (S. Kissin, LHU; A. Ruzicka, Cascadia): Microscopic examination of cut and etched surfaces show that the meteorite is a coarsest octahedrite, containing taenite but dominated by irregularly shaped kamacite grains with bandwidth >3.3 mm. Microhardness measurements for kamacite yielded VHN = 201 mean (range 196-206, 3 measurements). This indicates moderate work hardening.

Geochemistry: (S. Kissin, LHU; A. Ruzicka, Cascadia): INAA was performed according to the methods of Wasson et al. (1998) at Activation Laboratories (Ancaster, Ontario), irradiating polished cubes of ~0.4 g and ~3.2 mm thick. This yielded the following elemental concentrations (all units μg/g except where noted): As (12.8), Au (1.52), Co (4.62 mg/g), Cr (21), Cu (108), Ga (44), Ge (130), Ir (4.21), Ni (68.9 mg/g), Pt (11.6), Re (0.38), Sb (<20), W (<10). These data suggest that the meteorite belongs to the IAB complex as defined by Wasson and Kallemeyn (2002). Most elemental concentrations are similar to those reported for the IAB main group, except that the concentration of Ga is lower by ~50% and that of Ge is lower by ~60%. However, the determinations of Ga and Ge may be somewhat in error.

Classification: Iron, coarsest octahedrite (IAB)

Specimens: A type specimen of 21.4 g is available at Cascadia. The main mass is held by the finder.

Data from:
  MB98
  Table 1
  Line 1:
State/Prov/County:Cordoba
Date:10 May 1971
Latitude:30°45'S
Longitude:64°47'W
Mass (g):14000
Pieces:1
Class:Iron, IAB complex
Classifier:A. Ruzicka, M. Hutson, Cascadia; S. Kissin, LHU
Type spec mass (g):21.4
Type spec location:Cascadia
Main mass:Anon
Finder:anonymous
Comments:Submitted by Alex Ruzicka
Institutions
   and collections
Cascadia: Cascadia Meteorite Laboratory, Portland State University, Department of Geology, Room 17 Cramer Hall, 1721 SW Broadway, Portland, OR 97201, United States; Website (institutional address; updated 28 Oct 2011)
LHU: Department of Geology, Lakehead University, 955 Oliver Road, Thunder Bay, Ontario P7B 5E1, Canada (institutional address; updated 23 Dec 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 98, MAPS 45, 1530-1551 (2010)
Find references in NASA ADS:
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Geography:

Argentina
Coordinates:
     Recommended::   (30° 45'S, 64° 47'W)

Statistics:
     This is 1 of 10 approved meteorites from Cordoba, Argentina (plus 1 impact crater)
     This is 1 of 80 approved meteorites from Argentina (plus 9 unapproved names) (plus 2 impact craters)
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