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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The Legend of Leaverites

According to one rock shop Leaverite is the most common of all stones. Some are even more than four billion years old. It generally cannot be used for much because of its ugly nature. These stones are said to be so ugly that only mother earth could love them. They are truly the lonliest stones

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New Crested Duck-Billed Dinosaur Helps Reveal Mexico’s Ancient Past

University of Utah paleontologists this morning announced the discovery of a new dinosaur species, a creature with a duck-like bill and a hatchet-shaped head. This development stems from the discovery of a 72 million-year-old specimen, in the early 1990s in the northcentral Mexican state of Coahuila. The discovery helps reveal what Mexico was like in

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Nifty Rockhound Bumper Sticker Slogans

Love a Geologist – Feel your earthquake Love a Faceter – They’re a cut above the rest Love a Mineralogist – but don’t take them for Granite Love a Paleontologist – but be aware, they collect old, dead things. I collect rocks too! – Diamonds, rubies, topaz, emeralds… Amateur Paleontologist – Professional Rock Collector Amateur Mineralogist –

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Obsidian

In the Black Rock Desert, Millard County Geologic information: Approximately 2.5 million years ago (late Tertiary Period), volcanic eruptions in the Black Spring area of the Black Rock Desert in western Utah spewed out the volcanic rocks rhyolite, pumice, and obsidian. Obsidian is a dark-colored volcanic glass formed when molten lava cools quickly. It is usually

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Oddities of the Mineral Kingdom

ITACOLUMITE: the rock that bends.  It will bend and when turned over will bend in the opposite direction.  No known practical use has been found for this bend rock, but it is a source of gold and some diamonds in Brazil and India.  It is also found near clay with diamonds in it in these countries. Itacolumite is a

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Petrified Wood

The process of petrification of wood is still not well understood by scientists. In spite of many attempts, man has not been able to duplicate this process in the laboratory. HOW DOES WOOD PETRIFY? Wood (or other plant parts) must first be covered with such agents as ash from erupting volcanos, by volcanic mud flows,

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Pseudomorphs

By: Chris Fite, TRMS member Info from the book, Mineralogy for Amateurs, written by John Sinkankas, 1964 PSEUDOMORPH…the word is Greek, “pseudo” means false, “morph” means shape. A PSEUDOMORPH rock or mineral or crystal has the shape of another mineral instead of its normal shape. Most Limestone is not in the shape of an animal

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