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Calama 253
Basic information Name: Calama 253
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2019
Country: Chile
Mass:help 369 g
Classification
  history:
Recommended:  L3    [explanation]

This is 1 of 789 approved meteorites (plus 1 unapproved name) classified as L3.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 23 Jul 2022
Writeuphelp
Writeup from MB 111:

Calama 253        22°28.52’S, 68°51.15’W

Antofagasta, Chile

Find: 8 Sep 2019

Classification: Ordinary chondrite (L3)

Petrography: The meteorite has chondritic texture and is comprised by chondrules, chondrule fragments and mineral grains with interstitial fine-grained (1-5 µm) matrix. The chondrules are well outlined and have an average diameter 775±515 µm (N=79). The chondrules mostly are of BO, BP, PO, POP, ROP, RP, rare CC types. Compound chondrules are present. The main phases are olivine, pyroxene, feldspatic glass, Fe,Ni iron and troilite; chromite and silica are accessory. Fe,Ni metal and troilite surround the chondrules and occur in the matrix but rare occur in the chondrules. Chondrule mesostasis is isotropic. Olivine has weak undulatory optical extinction and irregular fracturing.

Geochemistry: Mineral compositions and geochemistry: Olivine Fa25.6±15.8 (N=46); PMD Fa=34.1%; Pyroxene Fs9.4±4.8 Wo1.0±1.0 (N=11)

Data from:
  MB111
  Table 0
  Line 0:
State/Prov/County:Antofagasta
Date:8 Sep 2019
Latitude:22°28.52'S
Longitude:68°51.15'W
Mass (g):368.6
Pieces:1
Class:L3
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):25.6±15.8 (N=46)
Ferrosilite (mol%):9.4±4.8 (N=11)
Wollastonite (mol%):1.0±1.0 (N=12)
Classifier:Lorenz C. A., Vernad
Type spec mass (g):21
Type spec location:Vernad
Main mass:Mr. Juan Pablo Pizzaro, Pizarroprieto@gmail.com
Finder:Mr. Juan Pablo Pizzaro
Comments:Field name JPP-06; analyst T. Kryachko (The Russian system of quality, Technograd, Moscow); 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. 111, in preparation (2022)
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Geography:

Chile
Coordinates:
     Recommended::   (22° 28' 31"S, 68° 51' 9"W)

Statistics:
     This is 1 of 2272 approved meteorites from Antofagasta, Chile (plus 8 unapproved names) (plus 1 impact crater)
     This is 1 of 2301 approved meteorites from Chile (plus 15 unapproved names) (plus 1 impact crater)
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