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Calama 300
Basic information Name: Calama 300
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2017
Country: Chile
Mass:help 103.3 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
Writeuphelp
Writeup from MB 112:

Calama 300        22°19.06’S, 68°40.10’W

Antofagasta, Chile

Find: 18 Mar 2017

Classification: Ordinary chondrite (H3)

Petrography: The meteorite mainly is composed of densely packed chondrules of 608±515 µm in diameter, N=182). The chondrules are well outlined and presented by PO, POP, GO, GOP and minor RP and BO types. The silica-bearing chondrules were found. The matrix is practically absent with exception of minor areas of fine-grained silicate material impregnated by iron hydroxides. More typically, the small spaces between the chondrules are filled by the Fe,Ni hydroxides with the relics of metal and troilite. Silicate melt pockets (<300 µm in size) with metal and sulfide droplets are widely distributed in the interchondrule space. Thin melt veinlets propagate from the melt pockets along the chondrule contacts. The chondrule mesostasis is isotropic glass. Olivine has weak undulatory extinction and irregular fractures. Iron hydroxides fill the irregular fractures and numerous subparallel fractures crossing the rock.

Data from:
  MB112
  Table 0
  Line 0:
State/Prov/County:Antofagasta
Date:18 Mar 2017
Latitude:22°19.06'S
Longitude:68°40.10'W
Mass (g):103.3
Pieces:3
Class:H3
Shock stage:S3
Weathering grade:W4
Fayalite (mol%):15.6±1.6 (N=20)
Ferrosilite (mol%):9.5±3.8 (N=23)
Wollastonite (mol%):1.1±1.1 (N=23)
Classifier:Lorenz C. A., Vernad
Type spec mass (g):28
Type spec location:Vernad.
Main mass:Mr. E. Zacharchuk, [email protected]
Finder:Mr. E. Zacharchuk
Comments:PMD Fa=10.1%; Field name is 1-22; 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° 19' 4"S, 68° 40' 6"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)
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