Meteoritical Bulletin: Entry for Calama 005

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Calama 005

Basic information

Name: Calama 005
This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2017
Country: Chile
Mass: 380 g

Classification
history:

Meteoritical Bulletin:	MB 107	(2018)	CO3
Recommended:			CO3 [explanation]

This is 1 of 639 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 17 Jan 2018

Writeup

help

Writeup from MB 107:

Calama 005 22°23.56’S, 68°38.61’W

Antofagasta, Chile

Find: 25 March 2017

Classification: Carbonaceous chondrite (CO3)

Physical characteristics: 1 individual sample, 380 g, broken in several pieces, brown-black and covered with brown fusion crust.

Petrography (M. A. Ivanova, Vernad): meteorite consists of fine-grained matrix material, chondrules of Type I and II, and refractory inclusions. Average diameter of chondrules is 0.2 mm. Chondrules consist of olivine, pyroxene and plagioclase mesostasis. The minor phases are spinel, melilite, chromite, sulfides, kamacite, taenite, and tetrataenite.

Geochemistry: Mineral compositions and geochemistry (M. A. Ivanova, Vernad): Olivine (EMPA) is Fa_22.2±18.4(N=98) mol%, CaO 0.24±0.16 ; MnO 0.23±0.13 (both wt. %), pyroxene is presented by orthopyroxene (Fs_11.6±10.8Wo_1.8±1.4(N=20)), augite (Fs_4.5Wo_41.9En_53.5), diopside (Fs_1.4Wo_50.7), and Al-diopside (Fs_4.3Wo_51.7), Al₂O₃ 16.3 wt%, TiO₂ 2.9 wt%. Mesostasis in chondrules is (wt%): SiO₂ 50.4; TiO₂ 0.42; Al₂O₃ 22.8; Cr₂O₃ 0.19; FeO 3.6; MnO 0.14; MgO 2.80; CaO 14.6; Na₂O 2.95; K₂O 0.19.

Classification (M. A. Ivanova, Vernad): Based on the texture, average chondrules size, mineralogy, and mineral chemistry the meteorite is a carbonaceous chondrite of CO3 type. The meteorite shows only minor weathering features.

Specimens: 1 piece (70 g) and a thin section are deposited in Vernad. The main mass with Mr. Timur Kryachko and Mt. Eugeniy Zakharchuk.

Data from:
  MB107
  Table 0
  Line 0:

State/Prov/County:	Antofagasta
Origin or pseudonym:	Desert
Date:	25 March 2017
Latitude:	22°23.56'S
Longitude:	68°38.61'W
Mass (g):	380
Pieces:	1
Class:	CO3
Fayalite (mol%):	22.2±18.4 (N=98)
Ferrosilite (mol%):	11.6±10.8 (N=20)
Wollastonite (mol%):	1.8±1.4 (N=20)
Classifier:	M. A. Ivanova, Vernad
Type spec mass (g):	76
Type spec location:	Vernad
Main mass:	Mr. Timur Kryachko and Mt. Eugeniy Zakharchuk
Finder:	Mr. Timur Kryachko and Mt. Eugenii Zakharchuk
Comments:	Submitted by M. A. Ivanova

Institutions
and collections

Vernad: Vernadsky Institute of Geochemistry and Analytical Chemistry, Russia (institutional address; updated 21 Feb 2016)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462

Find references in NASA ADS:
Find references in Google Scholar:

Photos:

Credit	Photos
Photos from the Encyclopedia of Meteorites:
Timur Kryachko
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Ryan Upchurch
Solar Anamnesis

Geography:

Chile

Chile

Coordinates:
Recommended::	(22° 23' 34"S, 68° 38' 37"W)

Statistics:
This is 1 of 2908 approved meteorites from Antofagasta, Chile (plus 10 unapproved names) (plus 1 impact crater)
This is 1 of 2937 approved meteorites from Chile (plus 13 unapproved names) (plus 1 impact crater)

Proximity search:

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