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Calama 172
Basic information Name: Calama 172
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2021
Country: Chile
Mass:help 95 g
Classification
  history:
Recommended:  L6-melt breccia    [explanation]

This is 1 of 66 approved meteorites classified as L6-melt breccia.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 6 Oct 2021
Writeuphelp
Writeup from MB 110:

Calama 172        22°26.88’S, 68°38.46’W

Antofagasta, Chile

Find: 19 Mar 2021

Classification: Ordinary chondrite (L6, melt breccia)

Petrography: The meteorite has brecciated texture. The clasts (up to 2 cm in size) comprised by coarse-grained intensively recrystallized chondritic rock (type 6) are joined by melt rock matrix (30 vol.%) containing mineral fragments and metal and troilite droplets. Olivine in clasts has strong undulatory extinction; rare olivine grains have weak mosaicism.

Data from:
  MB110
  Table 0
  Line 0:
State/Prov/County:Antofagasta
Date:19 Mar 2021
Latitude:22°26.88'S
Longitude:68°38.46'W
Mass (g):95
Pieces:1
Class:L6-melt breccia
Shock stage:S3
Weathering grade:W1
Fayalite (mol%):25.0±1.8 (N=13)
Ferrosilite (mol%):21.2±1.3 (N=12)
Wollastonite (mol%):1.4±0.3 (N=12)
Classifier:Lorenz C. A., Vernad
Type spec mass (g):28.6
Type spec location:Vernad
Main mass:Mr. T. Kryachko, bredfild@mail.ru
Finder:Mr. T. Kryachko
Comments:Field name is 7-25; analyst A. Agakhanov (Fersman Mineralogical Museum), T. Kryachko; submitted by Lorenz C.A., Vernad
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. 110, in preparation (2021)
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Geography:

Chile
Coordinates:
     Recommended::   (22° 26' 53"S, 68° 38' 28"W)

Statistics:
     This is 1 of 2243 approved meteorites from Antofagasta, Chile (plus 6 unapproved names) (plus 1 impact crater)
     This is 1 of 2272 approved meteorites from Chile (plus 13 unapproved names) (plus 1 impact crater)
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