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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
Classification
  history:
Meteoritical Bulletin:  MB 93  (2008)  IAB
Recommended:  Iron, IAB complex    [explanation]

This is 1 of 58 approved meteorites (plus 1 unapproved name) classified as Iron, IAB complex.   [show all]
Search for other: IAB complex irons, Metal-rich meteorites, and Iron meteorites
Comments: Approved 14 Jan 2008
Revised 4 Aug 2008: final writeup
Writeuphelp
Writeup from MB 93:

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

Chile

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:
  MB93
  Table 3
  Line 20:
State/Prov/County:Chile
Origin or pseudonym:Farm
Date:2002
Latitude:25°00'S
Longitude:69°30'W
Mass (g):15,600
Pieces:1
Class:Iron IAB
Type spec mass (g):43.7
Institutions
   and collections
Hamb: Mineralogisches Museum, Universität of Hamburg, Grindelallee 48, D-20146 Hamburg, Germany; Website (institutional address; updated 22 Feb 2013)
MPI: Max-Planck-Institut für Chemie, Abteilung Kosmochemie, Postfach 3060, D-55020 Mainz, Germany (institutional address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 93, MAPS 43, 571-632 (2008)
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Geography:

Chile
Coordinates:
     Recommended::   (25° 0'S, 69° 30'W)

Statistics:
     This is 1 of 539 approved meteorites from Antofagasta, Chile (plus 1 unapproved name) (plus 1 impact crater)
     This is 1 of 564 approved meteorites from Chile (plus 10 unapproved names) (plus 1 impact crater)
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