105 - Dolomite on Quartz    $25.00
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.