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Yucca 051
Basic information Name: Yucca 051
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2011
Country: United States
Mass:help 27.8 g
Meteoritical Bulletin:  MB 107  (2018)  H6
Recommended:  H6    [explanation]

This is 1 of 6996 approved meteorites (plus 6 unapproved names) classified as H6.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 7 Apr 2018
Writeup from MB 107:

Yucca 051        34°48.990’N, 114°16.151’W

Arizona, United States

Find: 11 Nov 2011

Classification: Ordinary chondrite (H6)

History: Found 5 cm below the surface by Jim Wooddell on November 11, 2011 while searching with a metal detector. Mr. Wooddell donated the main mass to Cascadia.

Physical characteristics: Sample is almost entirely covered with weathered fusion crust. A rusted light-colored interior is visible in two small patches where crust is missing.

Petrography: In thin section, the sample appears to be well integrated and relatively coarse-grained, containing chondrules with boundaries that blend into their surroundings. Crystalline plagioclase feldspar grains are typically 30-40 µm across, although a few grains > 100 µm across were observed. Metallic copper and several chromite-plagioclase objects are present.

Geochemistry: (M. Hutson and A. Ruzicka, Cascadia) The major silicate phases are equilibrated, including olivine (Fa19.9±0.5, N=20), low-Ca pyroxene (Fs17.3±0.5Wo1.4±0.4, N= 16), diopside (Fs6.4±2.0Wo46.4±1.4, N= 5), and plagioclase feldspar (Ab77.7±1.7An15.1±1.4Or7.2±1.1, N=8)

Classification: Mineral chemistry indicates an equilibrated H chondrite. A petrographic grade of 6 (near the 5/6 border) is suggested by the sample?s well-integrated texture and the sizes of the plagioclase feldspar grains.

Specimens: Cascadia holds 21.7 g in one piece, in addition to a polished thin section. Jim Wooddell holds a 3.8 g end cut and a polished thin section.

Data from:
  Table 0
  Line 0:
Date:11 Nov 2011
Mass (g):27.8
Shock stage:S3
Weathering grade:W1
Fayalite (mol%):19.9±0.5
Ferrosilite (mol%):17.3±0.5
Wollastonite (mol%):1.4±0.4
Classifier:M. Hutson and A. Ruzicka, Cascadia
Type spec mass (g):21.7
Type spec location:Cascadia
Main mass:Cascadia
Finder:Jim Wooddell
Comments:Lab number CML0796; field number JW193.; submitted by A. Ruzicka
   and collections
Cascadia: Cascadia Meteorite Laboratory, Portland State University, Department of Geology, Room 17 Cramer Hall, 1721 SW Broadway, Portland, OR 97201, United States; Website (institutional address; updated 28 Oct 2011)
References: Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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United States
     Recommended::   (34° 48' 59"N, 114° 16' 9"W)

     This is 1 of 180 approved meteorites from Arizona, United States (plus 1 impact crater)
     This is 1 of 1930 approved meteorites from United States (plus 866 unapproved names) (plus 28 impact craters)
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