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Cargo Muchacho Mountains (b)
Basic information Name: Cargo Muchacho Mountains (b)
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2009
Country: United States
Mass:help 21.3 g
Classification
  history:
Meteoritical Bulletin:  MB 110  (2022)  H4
Recommended:  H4    [explanation]

This is 1 of 6493 approved meteorites (plus 2 unapproved names) classified as H4.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 13 Mar 2021
Writeuphelp
Writeup from MB 110:

Cargo Muchacho Mountains (b)        32°55.260’N, 114°45.920’W

California, United States

Find: 2009 Dec 31

Classification: Ordinary chondrite (H4)

History: On December 31, 2009, while searching in the watershed of the Indian Pass Wash for additional meteorites in the Cargo Muchacho Mountains (CO3) strewn-field, a single complete-individual stone with relict fusion-crust was found right next to where Robert Verish had parked his truck.

Physical characteristics: A single, shield-shaped dark-brown stone; somewhat oriented. The side that was in contact with the ground is stained orange, while the top-side has a desert-varnished patina, which is indistinguishable from a relict fusion-crust. A cut surface reveals an interior with small, matrix-supported chondrules of various colors.

Petrography: (A. Rubin, UCLA) Chondrules moderately abundant (500±50 µm). Sample composed of olivine, low-Ca pyroxene, troilite, Fe-Ni metal, and Fe-oxides.

Geochemistry: Olivine (Fa18.0±0.1 n=7); Ferrosillite (Fs 16.2Wo1.6 n=9); low-Ca Pyroxene (Fs6.9Wo44.8 n=8).

Classification: Ordinary Chondrite (H4)

Specimens: 4.3 g at UCLA; main mass with Verish.

Data from:
  MB110
  Table 0
  Line 0:
State/Prov/County:California
Origin or pseudonym:open desert with thin alluvium
Date:2009 Dec 31
Latitude:32°55.260'N
Longitude:114°45.920'W
Mass (g):21.3
Pieces:1
Class:H4
Shock stage:S2
Weathering grade:W5
Fayalite (mol%):18.0±0.1 (n=7)
Ferrosilite (mol%):16.2 (n=9)
Wollastonite (mol%):1.6
Classifier:A. Rubin, UCLA
Type spec mass (g):4.3
Type spec location:UCLA
Main mass:Verish
Finder:James LaBarbera and Robert Verish
Comments:Fieldname = V1001; submitted by Robert Verish; submitted by Verish
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)
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 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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Photos:
CreditPhotos
Public domain photographs:
Robert Verish                           
Geography:

United States
Coordinates:
     Recommended::   (32° 55' 16"N, 114° 45' 55"W)

Statistics:
     This is 1 of 269 approved meteorites from California, United States (plus 24 unapproved names)
     This is 1 of 1927 approved meteorites from United States (plus 866 unapproved names) (plus 28 impact craters)
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