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Cargo Muchacho Mountains (c)
Basic information Name: Cargo Muchacho Mountains (c)
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2020
Country: United States
Mass:help 219 g
Meteoritical Bulletin:  MB 110  (2022)  L4
Recommended:  L4    [explanation]

This is 1 of 2061 approved meteorites (plus 4 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 31 May 2021
Writeup from MB 110:

Cargo Muchacho Mountains (c)        32°55.325’N, 114°45.998’W

California, United States

Find: 2020 Dec 30

Classification: Ordinary chondrite (L4)

History: A weathered, ordinary chondrite was recovered by Anton Clemons on January 30, 2020, while he was searching for additional stones of the Cargo Muchacho Mountains (CO3) meteorite.

Physical characteristics: One main stone, which is blocky-shaped and dark-brown, and one fragment which can be physically-paired to the main-mass. The main-mass has a relict fusion-crust except for the corners and edges. A cut surface reveals an interior of matrix-supported chondrules of various colors and sizes.

Petrography: (D. Sheikh, FSU) Sample is an ordinary chondrite containing chondrules (Av. 600±50µm), Fe-Ni metal, troilite, and chromite.

Geochemistry: Olivine (Fa25.0±0.6, range Fa24.2-26.0, n=16), Low-Ca Pyroxene (Fs21.5±0.7Wo1.2±0.2, range Fs20.5-22.7Wo0.9-1.6, n=15).

Classification: Ordinary Chondrite (L4)

Specimens: 21 g and a thin section at UCLA; main mass with Verish.

Data from:
  Table 0
  Line 0:
Origin or pseudonym:on bedrock
Date:2020 Dec 30
Mass (g):218.8
Shock stage:S4
Weathering grade:W2
Fayalite (mol%):25.0±0.6
Ferrosilite (mol%):21.5±0.7
Wollastonite (mol%):1.2±0.2
Classifier:D. Sheikh, FSU
Type spec mass (g):21
Type spec location:UCLA
Main mass:Verish
Finder:Anton Clemons
Comments:Fieldname & thin-section ID = "Anton1"; submitted by Daniel Sheikh; submitted by Daniel Sheikh
   and collections
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)
FSU: Department of Geological Sciences, Florida State University, Tallahassee FL 32306-4100, United States (institutional address; updated 16 Dec 2010)
Verish: Robert Verish, Meteorite-Recovery Lab, P.O. Box 463084, Escondido, CA 92046, United States; Website (private address; updated 27 May 2009)
References: Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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Daniel Sheikh            

United States
     Recommended::   (32° 55' 19"N, 114° 46' 0"W)

     This is 1 of 269 approved meteorites from California, United States (plus 24 unapproved names)
     This is 1 of 1924 approved meteorites from United States (plus 867 unapproved names) (plus 28 impact craters)
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