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| Wellman (f) | |||||||||||||||||||||||||||||||||||||||||
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| Basic information | Name: Wellman (f) This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2002 Country: United States Mass:  252 g | ||||||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 20 approved meteorites classified as H3-4. [show all] Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||||||||||||||||||||||
| Comments: | Approved 11 Nov 2020 | ||||||||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 109:
Wellman (f) 33.13°N, 102.38°W Texas, USA Find: 2002 Classification: Ordinary chondrite (H3-4) History: Found in 2002 by oil field geologist Rodney Michel in the region north of Highway 62 between Brownfield and Wellman, Texas, and subsequently purchased from the finder in February 2020 by Peter Allen. Petrography: (A. Irving, UWS and P. Carpenter, WUSL) The specimen is a breccia composed of discrete, well-formed chondrules plus lithic chondrite clasts set in sparse matrix containing extensively altered kamacite, taenite, low-Ti chromite, merrillite and chlorapatite. Both unequilibrated Type 3 clasts (containing relatively small, well-formed glass-bearing chondrules) and equilibrated Type 4 clasts (containing well-formed chondrules with albitic plagioclase) are present. Silica polymorph is present in some low-Ca pyroxene chondrules. Geochemistry: Olivine in equilibrated chondrules (Fa18.4±0.3, range Fa18.1-18.8, N = 4), olivine in unequilibrated chondrules (Fa16.4±8.6, range Fa6.7-25.1, N = 4), low-Ca pyroxene in both sorts of chondrules (Fs14.8±9.3Wo1.3±1.3, range Fs2.8-28.5Wo0.2-3.4, N = 5), diopside (Fs3.6Wo36.7; Fs5.4Wo46.1; N = 2). Classification: Ordinary chondrite (H3-4 breccia). Specimens: 22.2 g including one polished thin section at UWB; remainder with Mr. P. Allen. | ||||||||||||||||||||||||||||||||||||||||
| Data from: MB109 Table 0 Line 0: |
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| Institutions and collections |
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012) WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011) UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012) |
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| References: | Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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Geography:
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Statistics: This is 1 of 313 approved meteorites from Texas, United States (plus 2 unapproved names) (plus 3 impact craters) This is 1 of 1894 approved meteorites from United States (plus 890 unapproved names) (plus 28 impact craters) | ||||||||||||||||||||||||||||||||||||||||
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