102 - Dolomite    $35.00
Black Rock Tunnel
Phoenixville, Schuylkill Twp.
Chester County, PA
3.5" x 2" (88mm x 50mm)
Collected in the famous Black Rock Tunnel in Phoenixville, an active train tunnel the Dolomite and Smoky Quartz crystals are located on the exposed natural rock ceiling of the tunnel. Only the brave collected these specimens.