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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 Meteoritical Bulletin, no. 110, in preparation (2021)
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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 2160 approved meteorites from Antofagasta, Chile (plus 6 unapproved names) (plus 1 impact crater)
     This is 1 of 2189 approved meteorites from Chile (plus 13 unapproved names) (plus 1 impact crater)
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