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with sizes ranging from pebble-sized to enormous chunks weighing more than 40 pounds
Some of the earliest fossils on record from such microorganisms date back 4
Above: K-Pg Boundary Material from North American deposits
LUNAR DUST (Meteorite fragments from the Moon)
Bismuth Rainbow Crystal Staircase - SOLD 1.22" rockinaboxtethys with sizes ranging from pebble-sizedBismuth 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. 22". While bismuth's practical uses are limited beyond some pharmaceuticals, the element's utterly unique colors and shape continue to
