Meteoritical Bulletin: Entry for Calama 320

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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: 6.2 g

Classification
history:

Recommended:

H3 [explanation]

This is 1 of 703 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

Writeup

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 3160 approved meteorites from Antofagasta, Chile (plus 11 unapproved names) (plus 1 impact crater)
This is 1 of 3189 approved meteorites from Chile (plus 14 unapproved names) (plus 1 impact crater)

Proximity search:

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