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Clarendon (c)
Basic information Name: Clarendon (c)
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2015
Country: United States
Mass:help 377 kg
Meteoritical Bulletin:  MB 105  (2016)  L4
Recommended:  L4    [explanation]

This is 1 of 2073 approved meteorites (plus 5 unapproved names) classified as L4.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 22 Oct 2016
Writeup from MB 105:

Clarendon (c)        34.983°N, 100.933°W

Texas, United States

Find: 2015 Apr 6

Classification: Ordinary chondrite (L4)

History: Frank and DeeDee Hommel of the Bar H Working Dude Ranch located northwest of Clarendon, Texas, were out riding on their property on April 6, 2015, and report that "their horses went crazy" when they approached a large unusual rock (later determined to weigh 345 kg). They dug up additional fragments weighing about 32 kg near the large mass located at 34.983°N, 100.933°E. They contacted Eric Twelker, who arranged for testing of a specimen.

Physical characteristics: The main mass (345 kg) has a reddish-brown exterior and lacks fusion crust. The relatively fresh interior is medium gray with abundant bright metal grains.

Petrography: (A. Irving and S. Kuehner, UWS) Well-formed chondrules up to 3.3 mm occur within a relatively coarse-grained matrix containing abundant stained kamacite plus accessory sodic plagioclase, merrillite and troilite.

Geochemistry: Olivine (Fa24.1-24.6, N = 3), orthopyroxene (Fs20.5-20.6Wo1.2-1.5, N = 3), clinopyroxene (Fs7.3-7.6Wo45.2-45.0, N = 2). Oxygen isotopes (K. Ziegler, UNM): analysis of acid-washed subsamples by laser fluorination gave, respectively, δ17O = 3.611, 3.702, 3.673; δ18O = 4.855, 4.950, 4.827; Δ17O = 1.048, 1.088, 1.124 per mil.

Classification: Ordinary chondrite (L4).

Specimens: 20.6 g plus one polished thin section at UWB; remaining material with the finders.

Data from:
  Table 0
  Line 0:
Date:2015 Apr 6
Mass (g):377000
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):24.1-24.6
Ferrosilite (mol%):20.5-20.6
Wollastonite (mol%):1.2-1.5
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.6
Type spec location:UWB
Main mass:F. and D. Hommel
Finder:F. and D. Hommel
Comments:Submitted by A. Irving
Plots: O isotopes:  
   and collections
UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
Twelker: Eric Twelker, P.O. Box 844, Port Townsend, WA 98368, United States; Website (private address; updated 1 Dec 2014)
References: Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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Christophe PICQ   
Solar Anamnesis         

United States
     Recommended::   (34° 58' 59"N, 100° 55' 59"W)

     This is 1 of 317 approved meteorites from Texas, United States (plus 2 unapproved names) (plus 3 impact craters)
     This is 1 of 1930 approved meteorites from United States (plus 866 unapproved names) (plus 28 impact craters)
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