Meteoritical Bulletin: Entry for Calama 048

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Calama 048

Basic information

Name: Calama 048
This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2017
Country: Chile
Mass: 833 g

Classification
history:

Meteoritical Bulletin:	MB 108	(2020)	CO3
Recommended:			CO3 [explanation]

This is 1 of 635 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 23 Dec 2019

Writeup

Writeup from MB 108:

Calama 048 22°25.371’S, 068°40.746’W

Antofagasta, Chile

Find: 2017 Feb 23

Classification: Carbonaceous chondrite (CO3)

Physical characteristics: Sawn surface shows a dark interior with many small chondrules. Stone shows little weathering.

Petrography: Thin section shows abundant chondrules (predominantly of type I) and small CAIs set in a fine-grained matrix. The average chondrule apparent size is 160±50 µm (N=60), with a few chondrules up to 1 mm.

Geochemistry: Olivine in the range Fa_0.3-52.5(mean Fa_15.9±10.1, N=32). Cr₂O₃ in ferroan olivine 0.4±0.2 wt.% (N=15). Low-Ca pyroxene in the range Fs_1.0-13.6(mean Fs_1.5±0.8Wo_1.4±0.7, N=16).

Data from:
  MB108
  Table 0
  Line 0:

State/Prov/County:	Antofagasta
Origin or pseudonym:	Limestone plain
Date:	2017 Feb 23
Latitude:	22°25.371'S
Longitude:	068°40.746'W
Mass (g):	833.0
Pieces:	10
Class:	CO3
Shock stage:	low
Weathering grade:	low
Fayalite (mol%):	15.9±10.1 (N=32)
Ferrosilite (mol%):	1.5±0.8 (N=16)
Wollastonite (mol%):	1.4±0.7 (N=16)
Classifier:	J. Llorca, UPC
Type spec mass (g):	26
Type spec location:	UPC
Main mass:	José Vicente Casado
Finder:	José Vicente Casado - Javier Alvarez
Comments:	Field name: Met-2017-040; submitted by David Allepuz

Institutions
and collections

UPC: Institut de Tècniques Energètiques, Universitat Politècnica de Catalunya Diagonal 647, ed. ETSEIB, 08028 Barcelona, Spain, Spain (institutional address; updated 3 May 2015)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150

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Geography:

Chile

Coordinates:
Recommended::	(22° 25' 22"S, 68° 40' 45"W)

Statistics:
This is 1 of 2687 approved meteorites from Antofagasta, Chile (plus 9 unapproved names) (plus 1 impact crater)
This is 1 of 2716 approved meteorites from Chile (plus 15 unapproved names) (plus 1 impact crater)

Proximity search:

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