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| Banma | |||||||||||||||||||||||||||||||||||||
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| Basic information | Name: Banma This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: Yes, confirmed fall Year fell: 2016 Country: China Mass:  10.05 kg | ||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 8604 approved meteorites (plus 4 unapproved names) classified as L5. [show all] Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||||||||
| Comments: | Approved 15 Oct 2016 | ||||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 105:
Banma 33°15.18’N, 100°27.9’E Qinghai, China Confirmed fall: 2016 Aug 24 Classification: Ordinary chondrite (L5) History: On 24 August 2016, at about 21:00 local time, several nomads of Banma City, Qinghai province, saw a bright object flying from a southeasterly direction, followed by a loud explosion. The next day, the nomads searched in the direction of the explosion and found a black stone embedded in the ground in a small crater on a hillside. Physical characteristics: The stone is relatively flat and 32 × 23 cm and 18 cm thick. Fusion crust and regmaglypts are well preserved. Petrography: Chondrule outlines are obscure. The matrix displays a moderate to high degree of recrystallization. Poorly defined BO chondrules are 0.4-0.6 mm wide. All the feldspar grains are relatively small, less than 50 μm. Numerous FeNi metal and FeS grains are present. Geochemistry: (W. Hsu, PMO) Olivine, Fa24.0±0.4 (n=14), range Fa23.2-24.8. Low-Ca pyroxene, Fa20.3±0.5Wo1.6±0.1 (n=10), range Fs19.7-21.4Wo1.5-1.8. Classification: Ordinary chondrite, L5, S2, W0 Specimens: 64 g at PMO. Main mass at the Banma City Hall. | ||||||||||||||||||||||||||||||||||||
| Data from: MB105 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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| 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:
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Statistics: This is 1 of 28 approved meteorites from Qinghai, China This is 1 of 467 approved meteorites from China (plus 10 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||||||||
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