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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:help 380 g
Classification
  history:
Recommended:  CO3    [explanation]

This is 1 of 495 approved meteorites 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
Writeuphelp
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 Fa22.2±18.4 (N=98) mol%, CaO 0.24±0.16 ; MnO 0.23±0.13 (both wt. %), pyroxene is presented by orthopyroxene (Fs11.6±10.8Wo1.8±1.4 (N=20)), augite (Fs4.5Wo41.9En53.5), diopside (Fs1.4Wo50.7), and Al-diopside (Fs4.3Wo51.7), 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, in preparation (2018)
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Timur Kryachko      
Geography:

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

Statistics:
     This is 1 of 1181 approved meteorites from Antofagasta, Chile (plus 1 impact crater)
     This is 1 of 1208 approved meteorites from Chile (plus 6 unapproved names) (plus 1 impact crater)
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