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Xincheng | |||||||||||||||||||||||||||||||||||||
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Basic information | Name: Xincheng This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2015 Country: China Mass: ![]() | ||||||||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 798 approved meteorites (plus 1 unapproved name) classified as L3. [show all] Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||||||||||||||||||
Comments: | Approved 22 Apr 2017 | ||||||||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 106:
Xincheng 36°10.445’N, 103°25.60’E Gansu, China Find: 2015-7-26 Classification: Ordinary chondrite (L3) History: Found by Xing Baoyu in July 26, 2015, in the Gobi desert close to Xincheng town, Lanzhou city. Petrography: The thin section exhibits abundant well-defined chondrules (up to 1.2 mm) of different kinds, such as PO, PP, POP, BO, and minor RP. Interstitial glass is observed within some barred and porphyritic chondrules. The matrix is fine-grained silicates with minor metal, troilite and Fe-oxides. Mineral and chondrule clasts are also present. Metallic phases account for ~5 vol%. Geochemistry: Silicate grains are unequilibrated with chemical zoning. Olivine Fa9.3-24.2 (Fa21.2±3.6, PMD=11.5%, n=34); low-Ca pyroxene Fs2.2-25.2Wo0-2 (Fs12.9±7.9Wo0.7±1.2, Fs PMD=47.4%, n=30); minor pigeonite (Fs16.3-33.4Wo5.9-14.2) and Ca-rich pyroxene (Fs2.1-6.5Wo28.7-42.9). Plagioclase is Na-rich (Ab52.4-95.6An26.4-4.4, average Ab75.8±18.1An15.6±9.2, n=8). Classification: L3 classification based on metal abundance and moderate sized chondrules with varies textures. Petrological type is determined based on unequilibrated silicates (PMD 5%). Specimens: 690 g at PMO. | ||||||||||||||||||||||||||||||||||||
Data from: MB106 Table 0 Line 0: |
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Institutions and collections |
PMO: Purple Mountain Observatory, Nanjing, China (institutional address; updated 16 Dec 2011) |
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Catalogs: |
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References: | Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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Geography:![]() |
Statistics: This is 1 of 13 approved meteorites from Gansu, China This is 1 of 457 approved meteorites from China (plus 10 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||||||||
Proximity search: |