Bismuth Rainbow Crystal Staircase - 1.974" shrimp NASA disposition paperwork received with

NASA disposition paperwork received with this item indicates this particular tile was removed after the Challenger’s sixth mission (STS-41-G) which flew on October 5

The specimen in Age of Dinosaurs is a mixture of the portions of three distinct phases of the main eruption donated by Professor Gerta Keller of Princeton University

847" and comes from Chevrolet's St

ruled the Age of Dinosaurs

Bismuth Rainbow Crystal Staircase - 1.974" shrimp NASA disposition paperwork received withBismuth is an element (Bi 83) best known for its unusual staircase shape, the result of bismuth atoms attaching to the edge of a rapidly growing crystal. This is called hoppering, when atoms are drawn to the edge of a structure, creating a lattice formation. This specimen is a Bismuth Rainbow Crystal, measuring 1. 974". While bismuth's practical uses are limited beyond some pharmaceuticals, the element's utterly unique colors and shape continue to