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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 586 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 Meteoritical Bulletin, no. 110, in preparation (2021)
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Geography:

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

Statistics:
     This is 1 of 2063 approved meteorites from Antofagasta, Chile (plus 5 unapproved names) (plus 1 impact crater)
     This is 1 of 2091 approved meteorites from Chile (plus 12 unapproved names) (plus 1 impact crater)
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