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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
Classification
  history:
Recommended:  L4    [explanation]

This is 1 of 1727 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
Writeuphelp
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:
  MB110
  Table 0
  Line 0:
State/Prov/County:California
Origin or pseudonym:on bedrock
Date:2020 Dec 30
Latitude:32°55.325'N
Longitude:114°45.998'W
Mass (g):218.8
Pieces:2
Class:L4
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
Institutions
   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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
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Photos:
CreditPhotos
Public domain photographs:
Daniel Sheikh            
Geography:

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

Statistics:
     This is 1 of 268 approved meteorites from California, United States (plus 24 unapproved names)
     This is 1 of 1881 approved meteorites from United States (plus 890 unapproved names) (plus 28 impact craters)
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