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| Ulasitai | |||||||||||||
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| Basic information | Name: Ulasitai This is NOT an official name: Discredited meteorite. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2004 Country: China Mass:  430 kg | ||||||||||||
| Classification history: |
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| Comments: |
Entered 3 Feb 2006 Revised 27 Nov 2016: Now a synonym for Aletai | ||||||||||||
| Writeup |
Writeup from MB 90:
Ulasitai 44°57'24"N, 91°24'09"E Mulei County, Xinjiang Province Find: 28 April 2004 Iron (IIIE) History: A single iron meteorite weighing 430 kg was found during fieldwork by Mr. Xiaodong Li, a geologist. The meteorite was discovered on the hillside in the Mountain Beita area, Mulei county, Xinjiang Province. Physical Characteristics: (Miao B., Xu L., Lin Y., IGGCAS) The meteorite has an angular shape with cm-scale concaves on its surface and is dark brown with a sub-cm layer of limonite on its bottom, but with no fusion crust remaining. Petrography and Geochemistry: Kamacite (Ni = 6.87–7.39 Co = 0.47–0.75 [both wt%]), taenite (Ni = 11.6–36.7 Co = 0.22–0.65 [both wt%]), Widmanstätten pattern with 0.6–2.0 mm (average 1.14 mm) kamacite bandwidths. Bulk composition: Ni = 10.03 wt% (by ICP-AES), and trace elements (by ICP-MS, in µg/g) Ge = 31.28, Ga = 16.09, Ir = 0.22. Minor phases include schreibersite, cohenite, troilite, and chromite. Classification: Iron (IIIE). Note: This meteorite may be paired with Armanty. Specimens: A 530 g type specimen is on deposit at GUT and 730 g at IGGCAS. The finder holds the main mass. Writeup from MB 95: The Ulasitai (China) IIIE iron meteorite (Connolly et al. 2006, The Meteoritical Bulletin No. 90) has been shown to be paired with Armanty (Xu et al. 2008). Therefore the name Ulasitai is abolished as a formal meteorite name, and becomes a synonym for Armanty. Writeup from MB 105: Change of status of the name "Ulasitai"
Ulasitai, which was discredited as a distinct meteorite in 2009, now becomes a synonym for Aletai, and is the recommended name for a 430 kg mass of Aletai. | ||||||||||||
| Institutions and collections |
GUT: College of Earth Sciences, Guilin University of Technology, 12 Jiangan Road, Guilin 541004, China (institutional address; updated 18 Oct 2012) IGGCAS: Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China (institutional address; updated 16 Oct 2011) |
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| References: | Published in Meteoritical Bulletin, no. 90, MAPS 41, 1383-1418 (2006) Published in Meteoritical Bulletin, no. 95, MAPS 44, 429-462 (2009) 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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