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Blanca Estela
Basic information Name: Blanca Estela
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2002
Country: Chile
Mass:help 15.6 kg
Meteoritical Bulletin:  MB 93  (2008)  IAB
Recommended:  Iron, IAB complex    [explanation]

This is 1 of 82 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 14 Jan 2008
Revised 4 Aug 2008: final writeup
Writeup from MB 93:

Blanca Estela                     25°00'S, 69°30'W


Find: 2002

Iron (IAB)

History: A single iron mass of 15.6 kg was discovered by "pirquineros," local miners, in the region of the Guanaco gold mine, NW of Copiapo, northern Chile. The exact find location is withheld. Subsequent to the classification of the first meteorite, two more meteorites of 7 kg and 15 kg have been found in the same area. Their structures and nickel contents indicate that all three meteorites are paired.

Physical characteristics: In the outer parts of the meteorites rust veins follow structure elements.

Petrography: (J. Schlüter, Hamb) The bandwidth of kamacite lamellae is 3 mm. The samples on hand for classification show no inclusions.

Geochemistry: Composition of the metal (INAA): (B. Spettel, MPI) Co = 4.56, Ni = 66.0 (both mg/g), Ga = 93.6, Ge = 380.0, As = 11.4, Ir = 3.97, Au = 1.45 (all µg/g). Noble gases: (L. Franke, MPI) (75.6 mg sample) 3He = 8.55, 4He = 36.7, 20Ne = 0.0790, 21Ne = 0.065, 22Ne = 0.0710, 36Ar =0.45, 38Ar = 0.714, 40Ar = 5.9 (10-8 cc STP/g).

Classification: Iron meteorite, (IAB), coarse octahedrite. Noble gas data show that the meteorite is not paired with either Campo del Cielo or Copiapo.

Type specimens: A total of 43.7 g sample is on deposit at Hamb. Gerstenkorn holds the main mass.

Submitted by: J. Schlüter, Hamb.

Data from:
  Table 3
  Line 20:
Origin or pseudonym:Farm
Mass (g):15,600
Class:Iron IAB
Type spec mass (g):43.7
   and collections
Hamb: Museum der Natur Hamburg - Mineralogie, Grindelallee 48, D-20146 Hamburg, Germany; Website (institutional address; updated 18 Jan 2024)
MPI: Max-Planck-Institut für Chemie, Abteilung Kosmochemie, Postfach 3060, D-55020 Mainz, Germany; Website (institutional address; updated 7 Nov 2015)
References: Published in Meteoritical Bulletin, no. 93, MAPS 43, 571-632 (2008)
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     Recommended::   (25° 0'S, 69° 30'W)

     This is 1 of 3442 approved meteorites from Antofagasta, Chile (plus 12 unapproved names) (plus 1 impact crater)
     This is 1 of 3471 approved meteorites from Chile (plus 13 unapproved names) (plus 1 impact crater)
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