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Post Info TOPIC: Laochenzhen meteorite
Blobrana


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RE: Laochenzhen meteorite
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Laochenzhen
Shenqiu County, Henan Province, China
Fell 23 February 1987, 0300 hr
Stone. Ordinary chondrite (H5).
After detonations, a single mass weighing 14.25 kg fell in Yangwa village of Laochenzhen town; classification, olivine Fa19.1, D. Wang, Institute of Geochemistry, Academia Sinica, Guiyang, Guizhou, China, pers. comm., 1989
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Title: Studies of wu'an and laocheng meteorites recently fallen in China
Authors: Wang Daode Hou Wei Chen Yongheng Lin Wenzhu(Institute of Geochemistry, Acadcmia Simca, Guiyang)

Described and classified in this paper are two ordinary chondrite falls from China, in-cluding wu'an (H6) and Laochenzhen (H5). The classification as H6 and H5 is supported by the concentration of trapped 36Ar. The Wu'an and Laochenzhen ordinary meteorites yielded cosmic-ray exposure ages of 30-40 Ma. The grade of shock metamorphism is higher in Lao-chenzhen than that in Wu'an. So the concentrations of 3He and 40Ar are lower in Laochen-zhen than in Wu'an because of 3He and 40Ar losses

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Blobrana


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The Laochenzhen (H6) meteorite fell in Henan, China, on the 23rd February, 1987.
A total mass of 14.25 kg was recovered.

33° 8'N, 115° 10'E



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