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Blanca Estela | |||||||||||||||||||
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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: ![]() | ||||||||||||||||||
Classification history: |
This is 1 of 79 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![]() |
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: |
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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; Website (institutional address; updated 7 Nov 2015) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 93, MAPS 43, 571-632 (2008)
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Geography:![]() |
Statistics: This is 1 of 2370 approved meteorites from Antofagasta, Chile (plus 9 unapproved names) (plus 1 impact crater) This is 1 of 2399 approved meteorites from Chile (plus 15 unapproved names) (plus 1 impact crater) | ||||||||||||||||||
Proximity search: |