Jim Brace-Thompson | Rock & Gem Magazine

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Rethinking Radiocarbon Dating

Jim Brace-Thompson - October 6, 2020

DIG ADVENTURES

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Rock Collecting in Arizona

March 6, 2023

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How to Rockhound from an RV

January 16, 2023

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Exploring the Crystal Cave in Ohio

January 1, 2023

montana-sapphires

Montana Sapphires 101

December 19, 2022

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