I acquired this specimen in an exchange with the Smithsonian Museum in April, 2008. This piece is pristine, has been sitting in a bag sealed in the museum collection since 1969! It still very clearly shows the impact marks were it hit the ground and imbedded soil into the meteorite surface.

Specimen weight: 1268.1 grams

National Museum of Natural History Collection (Smithsonian)  #5136.

CV3 Carbonaceous Chondrite. It fell at 1:05 AM on February 8, 1969 over the town of Allende, Mexico. The meteorite exploded in the air in a brilliant fireball and scattered thousands of pieces over an area 30 miles long. The total known weight is over two tons. Allende is the largest stone fall for total weight known! When the main mass exploded, the individual fragments continued to burn and thus they exhibit a nice primary and secondary fusion crust. Most Allende stones have areas of missing fusion crust probably due to spalation. This is caused by the stones hitting each other while still falling. You can clearly see this in the photos below. The slices exhibit incredible chondrules some of which show the pyrite-like crystals under a good scope! This meteorite is absolutely crucial for any meteorite collection. It is the most studied meteorite in history.

Original Smithsonian label for this specimen.

This is a note handwritten by Roy Clarke director of the Smithsonian at the time of the Allende fall in 1969. He led a team to Mexico to collect pieces of the meteorite for the museum and for scientific study. This was the 9th specimen, and notes where it was found. This is a rare piece of history, talk about provenance!