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Calama 320
Basic information Name: Calama 320
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2022
Country: Chile
Mass:help 6.2 g
Classification
  history:
Meteoritical Bulletin:  MB 112  (2023)  H3
Recommended:  H3    [explanation]

This is 1 of 710 approved meteorites (plus 2 unapproved names) classified as H3.   [show all]
Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 4 Mar 2023
Writeuphelp
Writeup from MB 112:

Calama 320        22°29.50’S, 68°44.32’W

Antofagasta, Chile

Find: 2 May 2022

Classification: Ordinary chondrite (H3)

Petrography: The meteorite is composed of distinct chondrules of PO, POP, GO and minor BO, RP and CC types (D=395±218, N=134) in the fine-grained silicate matrix. Chondrule mesostasis is isotropic glass. The silica-bearing and compound chondrules were found. Olivine has sharp optical extinction and irregular fractures. Metal Fe,Ni abundance is 4.4 vol.%. Fe-hydroxide partially replaces some of metal grains and fills thin fractures in the rock.

Data from:
  MB112
  Table 0
  Line 0:
State/Prov/County:Antofagasta
Date:2 May 2022
Latitude:22°29.50'S
Longitude:68°44.32'W
Mass (g):6.2
Pieces:1
Class:H3
Shock stage:S1
Weathering grade:W2
Fayalite (mol%):17.7±4.1 (N=30)
Ferrosilite (mol%):11.2±5.9 (N=17)
Wollastonite (mol%):0.9±0.8 (N=17)
Classifier:Lorenz C. A., Vernad
Type spec mass (g):1.6
Type spec location:Vernad.
Main mass:Mr. T. Kryachko, [email protected]
Finder:Mr. T. Kryachko
Comments:PMD Fa=23.2%; Field name is 8-62; analyst T. Kryachko (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. 112, in preparation (2023)
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Geography:

Chile
Coordinates:
     Recommended::   (22° 29' 30"S, 68° 44' 19"W)

Statistics:
     This is 1 of 3440 approved meteorites from Antofagasta, Chile (plus 12 unapproved names) (plus 1 impact crater)
     This is 1 of 3469 approved meteorites from Chile (plus 13 unapproved names) (plus 1 impact crater)
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