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Calama 058
Basic information Name: Calama 058
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2016
Country: Chile
Mass:help 140 g
Classification
  history:
Recommended:  CR2    [explanation]

This is 1 of 166 approved meteorites classified as CR2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), and CR chondrites
Comments: Approved 1 Jan 2020
Writeuphelp
Writeup from MB 109:

Calama 058        22°21.521’S, 068°35.335’W

Antofagasta, Chile

Find: 2016-Oct-17

Classification: Carbonaceous chondrite (CR2)

Physical characteristics: Sawn surface shows many large, well-defined chondrules mostly of 0.5-1 mm but also few up to 3 mm in a fine-grained dark matrix containing abundant phyllosilicates. Abundant metal blebs and metal decorating chondrule rims. Stone moderately weathered.

Petrography: Thin section shows packed rounded to irregularly shaped chondrules separated by opaque matrix. Sulfide and metal abundant in matrix. Some metal weathered to iron oxides. Wide variety of chondrule types present.

Geochemistry: Olivine in the range Fa0.5-70.5 (mean Fa14.8±12.6, N=28). Cr2O3 in ferroan olivine 0.6±0.2 wt.% (N=12). Low-Ca pyroxene in the range Fs3.0-25.7 (mean Fs16.2±10.6, Wo1.1±0.6, N=19).

Data from:
  MB109
  Table 0
  Line 0:
State/Prov/County:Antofagasta
Origin or pseudonym:Limestone plain
Date:2016-Oct-17
Latitude:22°21.521'S
Longitude:068°35.335'W
Mass (g):140
Pieces:1
Class:CR2
Shock stage:low
Weathering grade:medium
Classifier:J. Llorca, UPC
Type spec mass (g):21
Type spec location:UPC
Main mass:Ion Ander Lanza
Finder:Ion Ander Lanza
Comments:Field Name: Met-2016b-001; submitted by David Allepuz
Institutions
   and collections
UPC: Institut de Tècniques Energètiques, Universitat Politècnica de Catalunya Diagonal 647, ed. ETSEIB, 08028 Barcelona, Spain, Spain (institutional address; updated 3 May 2015)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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Geography:

Chile
Coordinates:
     Recommended::   (22° 21' 31"S, 68° 35' 20"W)

Statistics:
     This is 1 of 1701 approved meteorites from Antofagasta, Chile (plus 5 unapproved names) (plus 1 impact crater)
     This is 1 of 1729 approved meteorites from Chile (plus 11 unapproved names) (plus 1 impact crater)
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