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Catalina 400
Basic information Name: Catalina 400
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2019
Country: Chile
Mass:help 117 g
Classification
  history:
Recommended:  EH5    [explanation]

This is 1 of 8 approved meteorites classified as EH5.   [show all]
Search for other: EH chondrites, Enstatite chondrites, Enstatite chondrites (type 4-7), and Enstatite-rich meteorites
Comments: Approved 18 Dec 2021
Writeuphelp
Writeup from MB 110:

Catalina 400        24°56’56.0"S, 69°44’32.1"W

Antofagasta, Chile

Find: 2019 Nov 26

Classification: Enstatite chondrite (EH5)

Petrography: (J. Gattacceca, CEREGE) Chondrite with small chondrules (~200 µm) and elongated enstatite crystals set in a matrix made mostly of terrestrial weathering products. Plagioclase up to 10 µm. Most opaques are weathered. Surviving primary opaque minerals are rare kamacite, daubreelite, schreibersite and a variety of iron-nickel phosphides. Graphite inclusions are found as aggregates of ~10 µm grains.

Geochemistry: Enstatite Fs1.1±0.4Wo0.1±0.0, range Fs0.7-1.6 (n=4). Plagioclase An2.6Ab93.0Or4.4 (n=2). Kamacite contains 2.90 wt% Si. Oxygen isotopic composition (J, Gattacceca, C, Sonzogni, CEREGE) from analysis of one acid-washed (HCl, EATG) 1.5 mg aliquot of a powdered 129 mg bulk sample is δ17O=2.982‰, δ18O=6.052‰ , Δ17O=-0.165‰ (slope 0.52, analytical uncertainties 0.08‰, 0.12‰, 0.03‰ respectively).

Classification: Enstatite chondrite (EH5). EH based on the Si content of metal. Type 5 based on the plagioclase size.

Specimens: Type specimen at CEREGE. Main mass at MCC

Data from:
  MB110
  Table 0
  Line 0:
State/Prov/County:Antofagasta
Date:2019 Nov 26
Latitude:24°56'56.0"S
Longitude:69°44'32.1"W
Mass (g):117
Pieces:7
Class:EH5
Weathering grade:high
Ferrosilite (mol%):1.1±0.4 (n=4)
Wollastonite (mol%):1.0±0.0
Magnetic suscept.:4.53
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):21
Type spec location:CEREGE
Main mass:MMC
Finder:Rodrigo Martinez
Comments:work name RM690; submitted by Jérôme Gattacceca
Plots: O isotopes:  
Institutions
   and collections
CEREGE: CEREGE BP 80 Avenue Philibert, Technopole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 29 Oct 2018)
MMC: Museo del Meteorito, Tocopilla 401, San Pedro de Atacama, Chile. or Alonso de Ercilla 1250, La Herradura, Coquimbo, Chile, Chile; Website (institutional address; updated 11 Mar 2014)
Catalogs:
References: Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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Photos:
CreditPhotos
Public domain photographs:
Jerome Gattacceca      
Geography:

Chile
Coordinates:
     Recommended::   (24° 56' 56"S, 69° 44' 32"W)

Statistics:
     This is 1 of 2320 approved meteorites from Antofagasta, Chile (plus 9 unapproved names) (plus 1 impact crater)
     This is 1 of 2349 approved meteorites from Chile (plus 15 unapproved names) (plus 1 impact crater)
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