The
iron meteorite
Iron meteorites, also called siderites or ferrous meteorites, are a type of meteorite that consist overwhelmingly of an iron–nickel alloy known as meteoric iron that usually consists of two mineral phases: kamacite and taenite. Most iron me ...
s of the IIE chemical type are
octahedrite
Octahedrites are the most common Iron meteorite#Structural classification, structural class of iron meteorites. The structures occur because the meteoric iron has a certain nickel concentration that leads to the exsolution of kamacite out of tae ...
s of various coarseness, most of which contain numerous
inclusion
Inclusion or Include may refer to:
Sociology
* Social inclusion, action taken to support people of different backgrounds sharing life together.
** Inclusion (disability rights), promotion of people with disabilities sharing various aspects of lif ...
s of
recrystallized stony
silicate
A silicate is any member of a family of polyatomic anions consisting of silicon and oxygen, usually with the general formula , where . The family includes orthosilicate (), metasilicate (), and pyrosilicate (, ). The name is also used ...
s.
Composition and origin
They have mineral compositions and
oxygen
Oxygen is a chemical element; it has chemical symbol, symbol O and atomic number 8. It is a member of the chalcogen group (periodic table), group in the periodic table, a highly reactivity (chemistry), reactive nonmetal (chemistry), non ...
isotope
Isotopes are distinct nuclear species (or ''nuclides'') of the same chemical element. They have the same atomic number (number of protons in their Atomic nucleus, nuclei) and position in the periodic table (and hence belong to the same chemica ...
ratios very similar to the
H chondrites, which makes it probable that they originate from the same parent body. The best candidate for this parent body is the
S-type asteroid 6 Hebe. Unlike most iron meteorites, the type IIE are thought to have been melted out of the
chondritic surface of the parent asteroid by impacts during its early history.
Rarity
It is a rare type with 24 known members as of 2020.
Meteoritical Bulletin Database
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See also
* Glossary of meteoritics
References
{{Meteorite-stub