Qidong is a L/LL5-an
chondrite
A chondrite is a stony (non-metallic) meteorite that has not been modified, by either melting or differentiation of the parent body. They are formed when various types of dust and small grains in the early Solar System accreted to form primi ...
meteorite
A meteorite is a solid piece of debris from an object, such as a comet, asteroid, or meteoroid, that originates in outer space and survives its passage through the atmosphere to reach the surface of a planet or Natural satellite, moon. When the ...
fallen in 1982 in
China
China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...
. After detonation a single individual specimen was found in the field. Other circumstances of
fall and recovery were not reported.
Composition and classification
This meteorite is intermediate between
L and
LL ordinary chondrites, possibly indicating formation on a separate parent body.
[Kallemeyn G. W., Rubin A. E., Wang D., and Wasson J. T. ''Ordinary chondrites: Bulk compositions, classification, lithophile-element fractionations, and composition-petrographic type relationships.'' 1989, Geochim. Cosmochim. Acta, 53, 2747–2767.] Its
fayalite,
ferrosilite place this stone at the extreme higher end of
L chondrites, the metal content is typical of
LL chondrites and the Co abundance in matrix
kamacite
Kamacite is an alloy of iron and nickel, which is found on Earth only in meteorites. According to the International Mineralogical Association (IMA) it is considered a proper nickel-rich variety of the mineral native iron. The proportion iron:ni ...
(15 mg/g) is at the extreme lower end of
LL chondrites.
See also
*
Glossary of meteoritics
This is a glossary of terms used in meteoritics, the science of meteorites.
#
* 2 Pallas – an asteroid from the asteroid belt and one of the likely parent bodies of the CR meteorites.
* 4 Vesta – second-largest asteroid in the asteroid b ...
*
Meteorite
A meteorite is a solid piece of debris from an object, such as a comet, asteroid, or meteoroid, that originates in outer space and survives its passage through the atmosphere to reach the surface of a planet or Natural satellite, moon. When the ...
Notes
External links
Meteorite Studies, a photographic classification: Qidong
{{Meteorites by name
Meteorites found in China
History of Jiangsu
Geology of China
Geography of Jiangsu
1982 in China
1982 in science