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Zhengjiabu
Basic information Name: Zhengjiabu
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No, but it is possible
Year found: 1982
Country: China
Mass:help 17 kg
Classification
  history:
Recommended:  H5    [explanation]

This is 1 of 10071 approved meteorites (plus 18 unapproved names) classified as H5.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 23 May 2020
Writeuphelp
Writeup from MB 109:

Zhengjiabu        40°47’34"N, 124°27’58"E

Liaoning, China

Find, possible fall: 1982

Classification: Ordinary chondrite (H5)

History: Jin Zhicheng, Dandong city, remembers that when he was 12 years old in the summer of 1982, at about 9:30 pm one night when most local people were asleep, a bright fireball illuminated the sky and the ground, followed by an explosion with an echo that continued for a long time. The next day, local people unsuccessfully searched for the cause, and the event was mostly forgotten. Fourteen years later, Jin Zhicheng returned to Zhengjiabu village to support his family. On May 6, 1996, he discovered a big stone while plowing a field, buried 30-40 cm in the heavy soil. He felt that it might be the stone that fell 14 years ago and put it in the yard for a further 23 years, until he asked Ziyao Wang for support in 2019.

Physical characteristics: (Ziyao Wang) 17 kg completly crusted individual with regmaglypts, the crust is partly oxidized.

Petrography: (R. Bartoschewitz, Bart) chondrule margins are difficult to discern in the strong recrystallized matrix; metal and sulfide mainly show irregular inclusions.

Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Olivine Fa19.4±0.3 (n=18); low-Ca pyroxene Fs17.2±0.5Wo1.6±0.5 (n=15); Ca pyroxene En48Fs6Wo46 (n=1); feldspar An12Or6 (n=3); chromite CRAL83-85, FFM87-84 (n=2); Cl-apatite and merrillite. Kamacite Ni=5.8-6.2, Co=0.7; taenite Ni=32-34, Co=0.2 (n=3) (all wt-%); troilite. Magnetic susceptibility (R. Bartoschewitz, Bart) log χ (× 10-9 m3/kg) = 5.01.

Classification: Ordinary chondrite (H5, S2, W2)

Specimens: 20.8 g at Kiel on deposit, Zhicheng Jin holds the main mass, Ziyao Wang 25 g and 131 g with Bart.

Data from:
  MB109
  Table 0
  Line 0:
State/Prov/County:Liaoning
Origin or pseudonym:farmland
Date:1982
Latitude:40°47'34"N
Longitude:124°27'58"E
Mass (g):17 kg
Pieces:1
Class:H5
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):19.4±0.3 (n=18)
Ferrosilite (mol%):17.2±0.5 (n=15)
Wollastonite (mol%):1.6±0.5
Magnetic suscept.:5.01
Classifier:R. Bartoschewitz
Type spec mass (g):20.8
Type spec location:Kiel
Main mass:Zhicheng Jin
Finder:Zhicheng Jin
Comments:working name WZ121; submitted by R. Bartoschewitz
Institutions
   and collections
Kiel: Geologisches und Mineralogisches Museum, Institut für Geowissenschaften, Christian-Albrechts-Universität Kiel, Ludewig-Mayn-Str. 10, D-24118 Kiel, Germany, Germany (institutional address; updated 13 Sep 2013)
Bart: Bartoschewitz Meteorite Laboratory, Weiland 37, D-38518 Gifhorn, Germany; Website (private address; updated 30 Nov 2019)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Wang Ziyao                        
Geography:

China
Coordinates:
     Recommended::   (40° 47' 34"N, 124° 27' 58"E)

Statistics:
     This is 1 of 3 approved meteorites from Liaoning, China (plus 1 impact crater)
     This is 1 of 407 approved meteorites from China (plus 15 unapproved names) (plus 1 impact crater)
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