chondrite classification

From the chondrite information page, the petrographic classification scheme works kind of like this: completely altered by water into clay (no known …

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Bediasite, Tektite

This bediasite was reportedly found several decades ago, and it tips the scale at 49.2 grams.  It comes via Mr. and Mrs. …

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about us

We started collecting meteorites in the summer of 1998. Within a few years, we came to notice an event that kept recurring: …

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Astoria, IIIAB

This IIIAB from South Dakota isn’t quite official yet.  The total known weight was ~24 kilograms.  The ~2 kilogram end-cut that was taken …

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Ash Creek, Texas

On February 15th, 2009 at around 11AM local time, a small asteroid entered the atmosphere and broke up over Birome, Texas.  Larger …

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Correo, H4

This strewn field from New Mexico has been producing finds for over thirty years.  The total known weight is still only a …

unequilibrated chondrite

chondrites

Chondrites are the most primitive group of meteorites.  They have formation ages dating to at least 4.56 billion years before the present, …

irons

irons

Iron meteorites, with few exceptions, represent fragments from the cores of large differentiated bodies (for an explanation of differentiation, see the “achondrites” …

achondrites

achondrites

Achondrites are a very diverse goup of meteorites representing a wide range of developmental processes in the solar system.  Some have crystallization …

stony-irons

stony-irons

Stony-iron meteorites are divided into two semi-related groups: mesosiderites and pallasites. Mesosiderites are a somewhat enigmatic group of generally metal-rich meteorites that have an origin that …