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Calama 138
Basic information Name: Calama 138
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2020
Country: Chile
Mass:help 69 g
Classification
  history:
Recommended:  CO3    [explanation]

This is 1 of 616 approved meteorites (plus 1 unapproved name) classified as CO3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites
Comments: Approved 28 Mar 2021
Writeuphelp
Writeup from MB 110:

Calama 138        22°24’26"S, 68°49’39"W

Antofagasta, Chile

Purchased: 2020 Oct

Classification: Carbonaceous chondrite (CO3)

Physical characteristics: A single stone. Cut face reveals a dark brown interior with small chondrules.

Petrography: (J. Gattacceca, CEREGE) Chondrite with small chondrules (average apparent diameter 150±70 µm, n=30) and small CAIs, set in a abundant fine-grained, iron-rich matrix. Opaque minerals are metal and troilite.

Geochemistry: Olivine Fa14.1±11.5, range Fa0.5-32.9, Fa PMD=116% (n=9). Cr2O3 in ferroan olivine 0.12±0.10 (n=8). Low-Ca pyroxene Fs6.3±3.9Wo3.7±0.8 (n=4).

Classification: Carbonaceous chondrite (CO3)

Specimens: Type specimen at CEREGE. Main mass with Kuntz.

Data from:
  MB110
  Table 0
  Line 0:
State/Prov/County:Antofagasta
Date:P 2020 Oct
Latitude:22°24'26"S
Longitude:68°49'39"W
Mass (g):69.0
Pieces:1
Class:CO3
Weathering grade:moderate
Fayalite (mol%):14.1±11.5 (n=9)
Ferrosilite (mol%):6.3±3.9 (n=4)
Wollastonite (mol%):3.7±0.8
Magnetic suscept.:4.45
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):14.98
Type spec location:CEREGE
Main mass:Kuntz
Finder:Jimmy Pizarro
Comments:work name K527; submitted by Jérôme Gattacceca
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)
Kuntz: Fabien Kuntz, France; Website (private address)
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
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Ryan Upchurch   
Geography:

Chile
Coordinates:
     Recommended::   (22° 24' 26"S, 68° 49' 39"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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