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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, s 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.

Primitive s (and presumably their asteroidal parents) still have the primordial solar system abundances of these elements.

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 -- 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 chondritic meteorite. Type 3 chondrites are further subdivided into 3.0 through 3.9 subtypes.

Asteroidal dust resembles carbonaceous s, and cometary dust resembles interstellar grains, which can include the elements: silicates, polycyclic aromatic hydrocarbons, and water ice.

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 chondritic meteorites.

See also: See also: Earth, Meteor, Meteorite, Asteroid, Solar System

Astronomy  Chondrite  Chondrule

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