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Calama 001
Basic information Name: Calama 001
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2010
Country: Chile
Mass:help 270 g
Classification
  history:
Recommended:  Ureilite    [explanation]

This is 1 of 416 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 1 Feb 2014
Writeuphelp
Writeup from MB 103:

Calama 001        ~22°25’S, ~68°45’W

Antofagasta, Chile

Found: 3 June 2010

Classification: Ureilite

History: Found June 3, 2010, on a limestone deflation plain near Calama by Eric and Gary Christensen while searching for meteorites. Fourteen fragments weighing 270 g were found within a 1 m area: largest fragment is 99 g.

Physical characteristics: Exterior of the stones is desert polished. Easy to cut. Sawn surface is dark with scattered graphite flakes.

Petrography: Typical ureilite with a protogranular texture, dominated by roughly equal proportions of anhedral, fine- to medium-grained (0.5 to 2 mm) olivine and pyroxene. Olivines surrounded by thin (<20 μm) reduction rims. Graphite flakes to 1 mm.

Geochemistry: (L. Garvie, ASU) Olivine cores Fa11.2±0.8, FeO/MnO=20.5±3.0, Cr2O3=0.53±0.05, CaO=0.25±0.02, n=12, rims down to Fa1.2 and FeO/MnO=2.8. Pyroxenes: augite Fs6.3±0.1Wo37.1±0.1, Na2O=0.20±0.02wt% n=6; low-Ca pyroxene Fs10.8±0.1Wo4.8±0.03, n=5.

Specimens: 22.1 g and two thin sections at ASU.

Data from:
  MB103
  Table 0
  Line 0:
State/Prov/County:Antofagasta
Origin or pseudonym:limestone deflation plain
Date:3 June 2010
Latitude:~22°25'S
Longitude:~68°45'W
Mass (g):270
Pieces:14
Class:Ureilite
Shock stage:medium
Weathering grade:medium
Fayalite (mol%):11.2±0.8
Classifier:L. Garvie, ASU
Type spec mass (g):22.1
Type spec location:ASU
Main mass:Eric Christensen
Finder:Eric Christensen, Gary Christensen
Comments:Submitted by L. Garvie, ASU
Institutions
   and collections
ASU: Center for Meteorite Studies, Arizona State University, Tempe, Arizona 85287-1404, United States; Website (institutional address; updated 14 Jan 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 103, in preparation (2014)
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Geography:

Chile
Coordinates:
     Recommended::   (22° 25'S, 68° 45'W)

Statistics:
     This is 1 of 961 approved meteorites from Antofagasta, Chile (plus 1 impact crater)
     This is 1 of 986 approved meteorites from Chile (plus 9 unapproved names) (plus 1 impact crater)
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