description Petersburg Overview
Petersburg is a meteorite that fell near Petersburg, Tennessee, in 1855 and is classified as a howardite. Howardites are polymict breccias containing material related to eucrites and diogenites, rock types generally interpreted as originating from the crust of the differentiated asteroid 4 Vesta. The meteorite is studied by planetary scientists as a physical sample of impact-mixed regolith from a differentiated parent body.
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Where did the Petersburg meteorite fall?
The meteorite fell near the town of Petersburg, Tennessee, in the year 1855. It is one of the historic meteorite falls recorded in the southeastern United States during the 19th century.
What type of meteorite is the Petersburg meteorite?
Petersburg is scientifically classified as a howardite, which is a specific type of achondrite meteorite. Howardites are polymict breccias, meaning they are composed of fragmented rock and soil fused together by ancient asteroid impacts.
Where does a howardite meteorite like Petersburg originate?
Howardites, along with eucrites and diogenites, are part of the HED meteorite clan and are widely believed to originate from the crust of the asteroid 4 Vesta. They represent pieces of the asteroid that were blasted into space by massive collisions billions of years ago.
Where are the specimens of the Petersburg meteorite housed today?
Fragments of the Petersburg meteorite are preserved in major institutional collections, including the Field Museum of Natural History in Chicago. The Smithsonian Institution also holds specimens for ongoing scientific research and public display.
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