Meteoritical Bulletin: Entry for Calama 087

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Calama 087

Basic information

Name: Calama 087
This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2018
Country: Chile
Mass: 36.1 g

Classification
history:

Recommended:

CO3 [explanation]

This is 1 of 621 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 18 Apr 2020

Writeup

Writeup from MB 108:

Calama 087 22°28.25’S, 68°51’W

Antofagasta, Chile

Find: 2018 Oct 27

Classification: Carbonaceous chondrite (CO3)

Petrography: (J. Gattacceca, CEREGE) Chondrite with well-delineated chondrules (average apparent diameter 250±90 µm, n=31) and small CAIs set in an abundant, fine grained, iron-rich matrix. Opaque are metal and troilite.

Geochemistry: Olivine Fa_23.5±17.0, range Fa_1.2-55.8, Fa PMD 65% (n=21), Cr₂O₃ in ferroan olivine 0.21±0.26 wt% (n=19). Low-Ca pyroxene Fs_4.8±3.0Wo_1.5±1.0(n=8).

Classification: Carbonaceous chondrite (CO3).

Data from:
  MB108
  Table 0
  Line 0:

State/Prov/County:	Antofagasta
Date:	2018 Oct 27
Latitude:	22°28.25'S
Longitude:	68°51'W
Mass (g):	36.13
Pieces:	1
Class:	CO3
Weathering grade:	moderate
Magnetic suscept.:	4.45
Classifier:	J. Gattacceca, CEREGE
Type spec mass (g):	7.6
Type spec location:	CEREGE
Main mass:	Mr. Evgeny Tsys, Mrs. Ksenia Rybka
Finder:	Mr. Evgeny Tsys, Mrs. Ksenia Rybka
Comments:	work name KY55; 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)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
Published in Meteoritical Bulletin, no. 109, in preparation (2020)

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Geography:

Chile

Coordinates:
Recommended::	(22° 28' 15"S, 68° 51' 0"W)

Statistics:
This is 1 of 2340 approved meteorites from Antofagasta, Chile (plus 9 unapproved names) (plus 1 impact crater)
This is 1 of 2369 approved meteorites from Chile (plus 15 unapproved names) (plus 1 impact crater)

Proximity search:

Synonyms

Coya Sur 005 (Coordinates were wrong. Renamed Coya Sur-->Calama)

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