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Index of Iron
Meteorites for Sale
IRON METEORITES were once surmised to come from the cores of asteroids, but recent studies suggest that while some may be from asteroid cores, others may be formed in concentrations of iron on asteroid surfaces. This is an evolving area of knowledge. Isotope studies suggest that certain classifications of irons may be associated with certain clans of stony meteorites. You can see one proposed scheme here. The crystal patters associated with iron meteorites is similarly being reconsidered. Patterns may be from cooling or post-cooling processes.
There are two systems of classification of iron
meteorites; structural classification and chemical
classification. See our TYPE TABLE for more
information.
The STRUCTURAL CLASSIFICATION
system relies on the nature and sizes of the crystals of iron
nickel metal. There are three basic structural classes;
- hexahedrites (<5%
nickel, almost pure kamacite. Etched faces
show Neumann lines)
- octahedrites
(intermediate nickel with plates of kamacite and taenite
interwoven to form a Widmanstatten pattern on etched
faces) The octahedrite group is further divided by
crystal size into subgroups: finest (Off), fine (Of),
medium (Om), coarse (Og), and coarsest (Ogg).
- ataxites (usually >13%
nickel, almost pure taenite) these show no structure
because of chemical or physical reasons.
The structural classification system was
devised by a museum curator and is popular with collectors.
Scientists are more likely to use the CHEMICAL
CLASSIFICATION system. Chemical classification relies on
the ratios of trace elements in iron meteorites. To see a list of
the chemical types, look at our type table. For more about the
details of this system, see Field Guide to Meteors and Meteorites, Rocks from Space or Meteorites and Their Parent
Planets.
Click on the picture to see photos, prices,
weights, and instructions on how to order meteorites. We
have a separate photo catalog for each locality. If something is list as "temporarily out of stock" that probably means we have more of it that we need to prepare for sale. Check the list on the front page for the most recent availability.
Hexahedrites (links to photo catalogs)
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Structural Class: Hexahedrite
Chemical Class: IIAB
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Price: temporarily
out of stock, I will cut more eventually |
Octahedrites (links to photo catalogs)
(arranged by structural class first, then chemical class)
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Structural Class: Fine Octahedrite, Of
Chemical Class: IVA
Etched specimens
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Price: ±$4+/g when we can keep them in stock. |
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- Type: Silicated iron
- Structural Class: Medium Octahedrite, Om
- Chemical Class: IAB
- Witnessed fall Spring 1927
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Price: from ±$6 per gram for etched slices. |
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Structural Class: Medium Octahedrite (Om)
Chemical Class: IIIAB
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Price: (temporarily unavailable) |
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Structural Class: Medium Octahedrite (Om)
Chemical Class: IIIAB
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Price: About $4.00 per gram |
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Structural Class: Medium Octahedrite
(Om)--Anomalous Iron
Chemical Class: IIICD
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Price: About $20 and up |
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Structural Class: Coarse Octahedrite Og
Chemical Class: IAB
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Price: Mostly about $1.50/g |
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Structural Class: Coarse Octahedrite Og
Chemical Class: IAB
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These come and go. |
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Structural Class: Coarse Octahedrite Og
Chemical Class: IAB
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Price: ±75¢/g These are harder to get now. |
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Structural Class: Coarse Octahedrite,
Og
Chemical Class: IIE
Both Iron and Pallasite sections
Best deal for etched irons
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Price: ~$4 per gram |
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Structural Class: Coarsest Octahedrite,
Ogg
Chemical Class: IIAB
Witnessed fall,1947--specimens are almost as
fresh as they day they hit
Crusted (melted surface)
specimens (click here)
Shrapnel-like specimens (click
here)
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Price: ~$3-4/g for individuals
~ $1.30/g for fragments. (Great first meteorite or gift!) |
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Structural Class: Plessitic Octahedrite
Chemical Class: ungrouped
Oriented individuals
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Price: about $5/g |
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Also Available:
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Ataxites (links
to photo catalogs)
About Meteorite Names
Meteorites take the name of the place where
they fell or were found. For example, the Canyon Diablo meteorite
was found near Canyon Diablo, Arizona, the Allende meteorite was
found near the town of Allende in Mexico, the Sikhote-Alin
meteorite fell in the Sikhote-Alin mountains of Russia, and so
on.
Iron is something most unusual . . .
Iron meteorites are made of native iron metal
mixed with a small amount of nickel. Outside of meteorites and
man-made iron, native iron is exceedingly rare. Early peoples
found meteorite iron to be useful for knives and tools.
Iron Meteorites Are Very Rare
Iron meteorites are extremely rare. Of all of
the meteorites that fall on the earth, scientists estimate that
only about five percent are Iron Meteorites. The Handbook of Iron
Meteorites lists only about 275 iron meteorite finds for the
United States--one of the most intensely searched countries in
the world. Because they are so different from other Earth-rocks,
a higher percentage are found.
To see our meteorite classification table and learn about the
types of meteorites, click here.
Back to The Meteorite Market home page.
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