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geology-travel

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How to Find Diamonds in Arkansas: A Practical Field Guide

The only public diamond-hunting site in the United States is Crater of Diamonds State Park in Murfreesboro, AR. The diamonds originate from volcanic lamproite pipes that erupted...

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Iceland's Black Beach: What Makes These Shores Distinctive

Iceland’s black beaches derive their color from finely ground volcanic rock, or basalt, fractured by repeated cooling and weathering of lava. When waves and streams break this...

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