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Chondritic meteorite

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A chondritic meteorite discovered in Antarctica.
Credit: NASA/JPL
The largest meteorite ever discovered weighs 60 tonnes and was found in Namibia. However, meteorites much larger than this have impacted the Earth and vapourised as they formed meteor craters.

However, chondritic meteorites often still have the primordial solar system abundances of these elements.

CAI: Calcium-aluminum-rich inclusions (CAIs) are found in chondritic meteorites. CAIs are primitive materials that formed in the solar nebula before the planets formed. CAIs are light-colored objects rich in refractory elements (that condense at a high temperature).

A Type I carbonaceous chondritic meteorite that fell in France in 1864 and that has recently been found to contain amino acids. [H76]
Orion A ...

There he could see that it was a chondritic meteorite -- a stony meteorite. This one contained numerous metal grains making it an H chondrite. The rusty weathering told Hildebrand the meteorite had fallen on the prairies thousands of years before.

PETROLOGIC TYPE - Measure of the degree of aqueous alteration (Types 1 and 2) and thermal metamorphism (Types 3-6) experienced by a ~. Type 3 chondrites are further subdivided into 3.0 through 3.9 subtypes.

Cometary dust is generally different (with overlap) from asteroidal dust. Asteroidal dust resembles carbonaceous ~s, and cometary dust resembles interstellar grains, which can include the elements: silicates, polycyclic aromatic hydrocarbons, and water ice.

Asteroids of this type are the most common variety and are usually found in the outer regions of the asteroid belt. They have very dark and neutral-colored surfaces, and are probably of carbonaceous composition similar to primitive carbonaceous ~s.

See also: See also: What is the meaning of Earth, Meteorite, Asteroid, Meteor, Solar?

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