Clarendon(c) 122g New Texas Meteor Find! | Large Fragment | Limited availability
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: 377 kg
This is 1 of 1474 approved meteorites (plus 4 unapproved names) classified as L4. [show all]
Search for other: L chondrites (type 4-7), Ordinary chondrites (type 4-7), L chondrites, and Ordinary chondrites
|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.