One spring day last year, Mark Longman was hiking around Castlewood Canyon State Park with questions that mounted with every boulder and rock wall he passed. A career geologist and longtime Denver ...
Wisconsin moonstones are only found in a small corner of Marathon County. This business allows people to dig for them.
WATERLOO — When you come across a conversation between Ray Anderson and Dave Malm, the best thing to do is sit and listen. Both rock enthusiasts, it’s easy to picture the conversation between them ...
A pair of diamonds that formed hundreds of kilometers deep in Earth’s malleable mantle both contain specks of materials that ...
The Loup Valley Gem and Mineral Society's rock collections aren't just about rocks, charter member Cheryl Barnholdt explains ...
One spring day last year, Mark Longman was hiking around Castlewood Canyon State Park with questions that mounted with every boulder and rock wall he passed. A career geologist and longtime Denver ...
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