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Yucca 034
Basic information Name: Yucca 034
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2004
Country: United States
Mass:help 89.3 g
Meteoritical Bulletin:  MB 104  (2015)  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 10 Dec 2015
Writeup from MB 104:

Yucca 034        34°44.1’N, 114°13.1’W

Arizona, United States

Find: 6 May 2004

Classification: Ordinary chondrite (H6)

History: Jerry A. Baird found the stone on May 6, 2004. He donated it to Cascadia on March 9, 2013.

Physical characteristics: Oriented stone covered with weathered fusion crust.

Petrography: In thin section, the sample appears well integrated, but with readily discernable chondrules, consistent with a low type 6 grade. BSE imaging shows that olivine and pyroxene is equilibrated throughout the section. Numerous feldspar grains >50 μm across were observed. Weathering is uneven, but ~15-20% of metal and sulfide grains have been replaced, consistent with a W1 weathering grade. Most olivine grains show undulose extinction and one to two sets of planar fractures, but no melt was observed, indicative of shock stage S3.

Geochemistry: (M. Hutson and A. Ruzicka, Cascadia) Olivine (Fa18.8±0.3, N=16), low-Ca pyroxene (Fs16.5±0.2Wo1.5±0.1En81.9±0.2, N= 12).

Classification: H6 based on mineral chemistry and texture.

Specimens: Cascadia holds 84.8 g in a single piece, in addition to two polished thin sections and a mounted butt.

Data from:
  Table 0
  Line 0:
Date:6 May 2004
Mass (g):89.3
Shock stage:S3
Weathering grade:W1
Fayalite (mol%):18.8±0.3
Ferrosilite (mol%):16.5±0.2
Wollastonite (mol%):1.5±0.1
Magnetic suscept.:5.09
Classifier:M. Hutson and A. Ruzicka, Cascadia
Type spec mass (g):84.8
Type spec location:Cascadia
Main mass:Cascadia
Finder:Jerry A. Baird
Comments:Lab number CML0713; field number JAB-031; 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. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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United States
     Recommended::   (34° 44' 6"N, 114° 13' 6"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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