Meteoritical Bulletin: Entry for Calama 286

MetSoc Home Publications Contacts

Search the Meteoritical Bulletin Database
Last update: 1 Apr 2023
Search for:	Search type:	Search limits:	Display:	Publication:
Names Text Places Classes Years	Contains Starts with Exact Sounds like	NonAntarctic Falls Non-NWAs Has strewnfield		What's new in the last:
Include past classifications in search		Has photo	Limit to approved meteorite names
Search text:

Calama 286

Basic information

Name: Calama 286
This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2022
Country: Chile
Mass: 3.8 g

Classification
history:

Recommended:

H3 [explanation]

This is 1 of 682 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 286 22°29.71’S, 68°46.36’W

Antofagasta, Chile

Find: 20 Nov 2022

Classification: Ordinary chondrite (H3)

Petrography: The meteorite has chondritic structure and is composed of distinct chondrules (D=286±227 µm, N=100), chondrule fragments and mineral grains cemented by fine-grained clastic matrix impregnated by Fe,Ni hydroxide. Chondrules are of PO, POP, RP, GO, rare BO and CC types. Chondrule mesostasis is isotropic glass. Metal Fe,Ni abundance is 4.8 vol.%. Olivine has weak undulatory extinction and irregular fractures.

Data from:
  MB112
  Table 0
  Line 0:

State/Prov/County:	Antofagasta
Date:	20 Nov 2022
Latitude:	22°29.71'S
Longitude:	68°46.36'W
Mass (g):	3.8
Pieces:	1
Class:	H3
Shock stage:	S2
Weathering grade:	W2
Fayalite (mol%):	18.4±4.1 (N=22)
Ferrosilite (mol%):	14.1±6.6 (N=17)
Wollastonite (mol%):	1.2±1.3 (N=17)
Classifier:	Lorenz C. A., Vernad
Type spec mass (g):	0.75
Type spec location:	Vernad.
Main mass:	Mr. M. Nepomiluev, [email protected]
Finder:	Mr. M. Nepomiluev
Comments:	PMD Fa=22.4%; Field name is M9-31; 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)

Find references in NASA ADS:
Find references in Google Scholar:

Geography:

Chile

Coordinates:
Recommended::	(22° 29' 43"S, 68° 46' 22"W)

Statistics:
This is 1 of 2514 approved meteorites from Antofagasta, Chile (plus 10 unapproved names) (plus 1 impact crater)
This is 1 of 2543 approved meteorites from Chile (plus 16 unapproved names) (plus 1 impact crater)

Proximity search:

Direct link to this page