|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
Mass: 10.05 kg
This is 1 of 5941 approved meteorites (plus 2 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 from MB 105:
Banma 33°15.18’N, 100°27.9’E
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.
PMO: Purple Mountain Observatory, Nanjing, China (institutional address; updated 16 Dec 2011)
|References:||Published in Meteoritical Bulletin, no. 105, in preparation (2016)|
This is 1 of 7 approved meteorites from Qinghai, China
This is 1 of 227 approved meteorites from China (plus 8 unapproved names) (plus 1 impact crater)
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