Meteoritical Bulletin: Entry for Calama 001

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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: 270 g

Classification
history:

Meteoritical Bulletin:	MB 103	(2014)	Ureilite
Recommended:			Ureilite [explanation]

This is 1 of 660 approved meteorites classified as Ureilite. [show all]
Search for other: Achondrites, Ureilites

Comments:

Approved 1 Feb 2014

Writeup

help

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 Fa_11.2±0.8, FeO/MnO=20.5±3.0, Cr₂O₃=0.53±0.05, CaO=0.25±0.02, n=12, rims down to Fa_1.2and FeO/MnO=2.8. Pyroxenes: augite Fs_6.3±0.1Wo_37.1±0.1, Na₂O=0.20±0.02wt% n=6; low-Ca pyroxene Fs_10.8±0.1Wo_4.8±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, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full

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Geography:

Chile

Chile

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

Statistics:
This is 1 of 3440 approved meteorites from Antofagasta, Chile (plus 12 unapproved names) (plus 1 impact crater)
This is 1 of 3469 approved meteorites from Chile (plus 13 unapproved names) (plus 1 impact crater)

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Revision
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