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Online Exhibits: Oddities and Curiosities

The Bryn Mawr mineral collection has some really weird stuff.

Click on an image to learn more about the specimen!

Gastroliths: Dinosaur Stomach Rocks
These rocks were polished in the stomach of a dinosaur.
Native Mercury occurs in a liquid form - these drops of native mercury have seeped out of the rock they formed in and are sitting on the surface of the rock as high-surface-tension liquid drops!
Each shiny speck is a sphere of liquid mercury.
Here's a close-up of the tiny drops of liquid native mercury that have seeped out of this rock
Close-up of the small spheres of liquid mercury that are seeping out of this rock.
Fulgerite: Petrified Lightning
Petrified Lightning!
Trinitite: Melted sand from directly under the first atomic bomb test
The first atomic bomb created this mineral.
Sand from the Sahara
Sand from the Sahara
Sandy Calcite
Sandy Calcite Crystals
Deliquescent Salts
Half-melted salt