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Yucca 038 | |||||||||||||||||||||||||||||||||||||||
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Basic information | Name: Yucca 038 This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2006 Country: United States Mass: ![]() | ||||||||||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 11150 approved meteorites (plus 22 unapproved names) classified as H5. [show all] Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||||||||||
Comments: | Approved 27 Feb 2016 | ||||||||||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 105:
Yucca 038 34°42.845’N, 114°10.697’W Arizona, United States Find: 2006 Oct Classification: Ordinary chondrite (H5) History: Purchased by Dennis Asher from the finder, John Wolfe, and later donated to Cascadia. Physical characteristics: A dark reddish-brown weathering patina covers all exterior surfaces. Weathered fusion crust covers two sides. Petrography: Chondrules (mean diameter = 0.67±0.29 mm, N=17) and matrix are well integrated. Chondrule mesostases are crystalline with plagioclase feldspar grains commonly ~5 μm across; larger interchondrule feldspars are 20-40 μm across. The sample contains about 0.3% metal, 1.8% troilite, and 5.3% hydroxide (weathering product, often in veins) based on modes determined from reflected light images Most olivine grains show mild to moderate undulose extinction with irregular or planar fractures, consistent with shock stage S2. Geochemistry: (M. Hutson and A. Ruzicka, Cascadia) Olivine (Fa19.3±1.6, N=52), low-Ca pyroxene (Fs17.0±1.1Wo1.3±0.8En81.6±1.1, N= 19). Variability could be caused in part by unavoidable analysis overlap with weathering products. Classification: H5 chondrite based on mineral chemistry and texture, although chondrule size, magnetic susceptibility, and potential pre-weathering metal content are more consistent with an L chondrite. A high proportion of hydroxide suggests weathering grade W3. Specimens: Cascadia holds 9.7 g in multiple pieces, in addition to one polished thin section. | ||||||||||||||||||||||||||||||||||||||
Data from: MB105 Table 0 Line 0: |
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Institutions 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) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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Geography:![]() |
Statistics: This is 1 of 178 approved meteorites from Arizona, United States (plus 1 impact crater) This is 1 of 1894 approved meteorites from United States (plus 890 unapproved names) (plus 28 impact craters) | ||||||||||||||||||||||||||||||||||||||
Proximity search: |