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Remarkable Rocks
498d ago
Leland Blue: Manmade (not quite on purpose) and in limited supply
By
Logan Kassuba
505d ago
Yooperlites: Michigan’s ‘newest’ rock (that’s one billion years old)
By
Logan Kassuba
512d ago
Petoskey stones: millions of years old, and they come in pink!
By
Logan Kassuba