The oldest rocks main content.

The oldest rocks

Part of Hall of Meteorites.

B.3.2 The oldest rocks hero.jpg

Exhibition Text

Crystals containing calcium and aluminum date to the beginning of the solar system.

For Educators

Topic: Astronomy

Subtopic: Planets

Keywords: Astrophysics, Aluminum, Chondrites (Meteorites), Calcium, Solar System--Origin, Astrogeology

Audience: General

In This Section

Exhibit Allende (AMNH 4880) This fragment of Allende contains two kinds of calcium-aluminum inclusions (CAIs): round and irregularly shaped. Round CAIs melted...