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Johnstown

C.6.2.3.1.  Johnstown meteorite hero.jpg

Exhibition Text

Buried by Crystals

Diogenites are made of molten rock that was trapped beneath Vesta's surface. As a result, they cooled much more slowly than the eucrites, so their crystals had more time to grow.

This photo of a diogenite is magnified 40 times—exactly the same amount as the eucrite. The eucrite's smaller crystals indicate that it hardened closer to Vesta's surface.

Collection Information

JOHNSTOWN

Fell July 6, 1924 Weld County, Colorado, USA

DIO

AMNH 2494

For Educators

Topic: Earth Science

Subtopic: Meteorites

Keywords: Meteorites, Astrophysics, Magmas, Astrogeology, Vesta (Asteroid)

Audience: General