Shortcut Navigation:
Pyrite-bearing conglomerate_HERO

Pyrite-bearing conglomerate

Pyrite-bearing conglomerate

  • Exhibition Text

    • This quartz-pebble conglomerate is from one of the oldest layers of the Huronian Super-group. It formed as a gravel bar in a river, perhaps during a flood. The rock contains the heavy minerals pyrite (called “fool’s gold”) and uraninite (a uranium mineral), which were originally particles carried by the river. These minerals could not have survived in the presence of oxygen. They are part of the evidence for an oxygen-poor atmosphere 2.5 billion years ago.

      AMNH collection

      Show more
  • For Educators

    • Topic: Earth Science

      Subtopic: Atmosphere

      Keywords: Geology, Stratigraphic--Huronian, Uraninite, Oxygen, Atmosphere, Paleoclimatology, Pyrites

      Audience: General

American Museum of Natural History

Central Park West at 79th Street
New York, NY 10024-5192
Phone: 212-769-5100

Open daily from 10 am-5:45 pm
except on Thanksgiving and Christmas
Maps and Directions

Enlighten Your Inbox

Stay informed about Museum news and research, events, and more!