|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
Mass: 15.6 kg
This is 1 of 54 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
Approved 14 Jan 2008|
Revised 4 Aug 2008: final writeup
Writeup from MB 93:
Blanca Estela 25°00'S, 69°30'W
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).
Type specimens: A total of 43.7 g sample is on deposit at Hamb. Gerstenkorn holds the main mass.
Submitted by: J. Schlüter, Hamb.
Hamb: Mineralogisches Museum, Universität Hamburg, Grindelallee 48, D-20146 Hamburg, Germany (institutional address)
MPI: Max-Planck-Institut für Chemie, Abteilung Kosmochemie, Postfach 3060, D-55020 Mainz, Germany (institutional address)
|References:||Published in Meteoritical Bulletin, no. 93, MAPS 43, 571-632 (2008)|
This is 1 of 392 approved meteorites from Antofagasta, Chile (plus 1 impact crater)
This is 1 of 416 approved meteorites from Chile (plus 7 unapproved names) (plus 1 impact crater)
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