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Serpentinite bluffs

Fun Facts Saturday: Geology and the Golden Gate Bridge

Editor's Note: This is a new column wherein we explore a history-making moment and its connection to geology. By Antoinette Rahn Eighty-six years ago today (Jan....
Obsidian

Mining More Than Quartz and Turquoise

Story by Steve Voynick That quartz and turquoise are most often associated with the Native American experience in collecting, mining, utilizing and trading minerals is...

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