Rock Talk Library

Read about iridescent Fire Agates, Dinosaurs, the Dugway Geode Beds, Petrified Wood, Devil's Slide and much more! You may want to bookmark the Rock Talk Library to come back again and again!

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Investigate Your World

Ready to take your own journey into the Utah outback? Join our rock-hounders to explore and hunt for stones, agates, fossils and more! Find out more about these remarkable guided adventures!

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Visitors Are Welcome

Intrigued by rocks and agates? Fascinated by fossils? Do crystals and geodes stop you in your tracks? Join us to learn about earth sciences like geology, mineralogy and paleontology!

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Utah Dinosaur Quarry Reopens

The Cleveland-Lloyd Dinosaur Quarry, one of Utah’s best known excavation sites, will re-open for the season on March 27. The quarry offers interactive displays and exhibits, including a display on the excavation history of the site, a fossil preparation table, replica skulls of animals found there, and a mounted Allosaurus skeleton. Visitors can also watch

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Wonderstone

in the Vernon Hills, Tooele County A striking feature of Vernon Hills wonderstone is its intricately folded bands that create colorful designs in cream, yellow-brown, and multiple shades of maroon. Geologic information: The Vernon Hills wonderstone is a welded-vitric tuff (vitric means glassy) of rhyolitic composition. It is a volcanic rock composed predominantly of volcanic glass

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