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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:help 220 g
Classification
  history:
Recommended:  H3    [explanation]

This is 1 of 616 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
Writeuphelp
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 Fa19.6±1.87, PMD Fa 9.5 (N=18); Pyroxene Fs15.9±0.98Wo1.21±0.31 (N=17); rare large chondrules are Mg-rich: Ol Fa5.02±2.52, PMD Fa 50 (N=19); Px Fs3.64±2.5Wo1.16±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 1671 approved meteorites from Antofagasta, Chile (plus 5 unapproved names) (plus 1 impact crater)
     This is 1 of 1699 approved meteorites from Chile (plus 11 unapproved names) (plus 1 impact crater)
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