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Minerals of the Greenspring Quarry in Baltimore County, Maryland

Since 2006, the 40 acre former Arundel Greenspring Quarry has been the centerpiece of  Quarry Lake at Greenspring, a thriving gated communit...
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An Amazing Visit with Pennsylvania's Joe Dague

It was unbeknownst to me that sulfur crystals such as the one pictured above occurred in Pennsylvania.  As a collector who specializes in mi...
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