Sep 30, 2024
Dance of the Stars
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Sep 30, 2024
Hidden Giant : Superplume beneath our feet
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Sep 24, 2024
the Gold Standard
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Sep 10, 2024
Hydrogen and the Water Engine
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Sep 3, 2024
The Expanding Earth
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Most Popular
Sep 4, 2024
Journey to the Dawn of Time
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Jun 29, 2024
Petrology: The study of Rocks
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May 29, 2024
Feldspar : From Heaven to Earth
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Recent
Aug 1, 2024
Fluorite : Gem of many Colors
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Jul 9, 2024
Discover the Wonders of Quartz
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Jun 27, 2024
Stratigraphy: Unveiling Earth's History_
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Jun 26, 2024
The Complete Guide to Crystal Healing
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Gem and Mineral Exchange
A Gem and Mineral education and exchange site from Tucson Arizona.