Meteoritical Bulletin: Entry for Calama 075

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Calama 075

Basic information

Name: Calama 075
This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2019
Country: Chile
Mass: 220 g

Classification
history:

Recommended:

H3 [explanation]

This is 1 of 672 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 12 Feb 2020

Writeup

Writeup from MB 109:

Calama 075 22°29.05’S, 68°48.17’W

Antofagasta, Chile

Find: 18 Oct 2019

Classification: Ordinary chondrite (H3)

Petrography: (Lorenz C.A., Vernad) The meteorite comprises chondrules and chondrule fragments with minor interstitial fine-grained, and in places, devitrified melt matrix, metal-troilite and troilite-silicate aggregates, opaque and silicate melt veinlets and melt pockets. Chondrules are well lineated. Olivine has undulatory and mosaic optical extinction, planar fractures and planar deformation features. Feldspatic glass is mostly isotropic, in places partially anisotropic.

Geochemistry: Mineral composition and geochemistry: Olivine Fa_19.6±1.87, PMD Fa_9.5(N=18); Pyroxene Fs_15.9±0.98Wo_1.21±0.31(N=17); rare large chondrules are Mg-rich: Ol Fa_5.02±2.52, PMD Fa₅₀(N=19); Px Fs_3.64±2.5Wo_1.16±1.35(N=4).

Data from:
  MB109
  Table 0
  Line 0:

State/Prov/County:	Antofagasta
Date:	18 Oct 2019
Latitude:	22°29.05'S
Longitude:	68°48.17'W
Mass (g):	220
Pieces:	Many
Class:	H3
Shock stage:	S4
Weathering grade:	W2
Fayalite (mol%):	19.6±1.87 (N=18)
Ferrosilite (mol%):	15.9±0.98 (N=17)
Wollastonite (mol%):	1.21±0.31 (N=17)
Classifier:	Lorenz C. A., Vernad
Type spec mass (g):	44.2
Type spec location:	Vernad
Main mass:	Mr. T. Kryachko, bredfield@mail.ru
Finder:	Mr. T. Kryachko
Comments:	field name is Calama 6-18; 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. 109, in preparation (2020)

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Geography:

Chile

Coordinates:
Recommended::	(22° 29' 3"S, 68° 48' 10"W)

Statistics:
This is 1 of 2370 approved meteorites from Antofagasta, Chile (plus 9 unapproved names) (plus 1 impact crater)
This is 1 of 2399 approved meteorites from Chile (plus 15 unapproved names) (plus 1 impact crater)

Proximity search:

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