Fifty Shades of Retirement: A Brief Geologic History of the U.S. (or how we learned to love rock hounding)

weekend open thread - October 21-22, 2023 — Ask a Manager

Oregon Gemstones

Offbeat Adventures: Travel to the Coolest Hidden Wonders in Every

Download entire Program book - Society for American Archaeology

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Frontiers Precambrian Paleobiology: Precedents, Progress, and

Where do large amethyst geodes come from? I see similar 1-meter

How do rocks and minerals help in building civilization or society

Documenting Past Climate Change